Replace `as_target` context managers by direct calls (#18325)

* Preliminary work on tokenizers

* Quality + fix tests

* Treat processors

* Fix pad

* Remove all uses of  in tests, docs and examples

* Replace all as_target_tokenizer

* Fix tests

* Fix quality

* Update examples/flax/image-captioning/run_image_captioning_flax.py
Co-authored-by: amyeroberts <amy@huggingface.co>

* Style
Co-authored-by: amyeroberts <amy@huggingface.co>

src/transformers/models/mbart50/tokenization_mbart50_fast.py

@@ -14,7 +14,6 @@
 # limitations under the License.
 
 import os
-from contextlib import contextmanager
 from shutil import copyfile
 from typing import List, Optional, Tuple
 
@@ -98,10 +97,8 @@ class MBart50TokenizerFast(PreTrainedTokenizerFast):
     >>> tokenizer = MBart50TokenizerFast.from_pretrained("facebook/mbart-large-50", src_lang="en_XX", tgt_lang="ro_RO")
     >>> src_text = " UN Chief Says There Is No Military Solution in Syria"
     >>> tgt_text = "Şeful ONU declară că nu există o soluţie militară în Siria"
-    >>> model_inputs = tokenizer(src_text, return_tensors="pt")
-    >>> with tokenizer.as_target_tokenizer():
-    ...     labels = tokenizer(tgt_text, return_tensors="pt").input_ids
-    >>> # model(**model_inputs, labels=labels) should work
+    >>> model_inputs = tokenizer(src_text, text_target=tgt_text, return_tensors="pt")
+    >>> # model(**model_inputs) should work
     ```"""
 
     vocab_files_names = VOCAB_FILES_NAMES
@@ -211,15 +208,11 @@ class MBart50TokenizerFast(PreTrainedTokenizerFast):
         self.tgt_lang = tgt_lang
         return super().prepare_seq2seq_batch(src_texts, tgt_texts, **kwargs)
 
-    @contextmanager
-    def as_target_tokenizer(self):
-        """
-        Temporarily sets the tokenizer for encoding the targets. Useful for tokenizer associated to
-        sequence-to-sequence models that need a slightly different processing for the labels.
-        """
-        self.set_tgt_lang_special_tokens(self.tgt_lang)
-        yield
-        self.set_src_lang_special_tokens(self.src_lang)
+    def _switch_to_input_mode(self):
+        return self.set_src_lang_special_tokens(self.src_lang)
+
+    def _switch_to_target_mode(self):
+        return self.set_tgt_lang_special_tokens(self.tgt_lang)
 
     def set_src_lang_special_tokens(self, src_lang: str) -> None:
         """Reset the special tokens to the source lang setting. prefix=[src_lang_code] and suffix=[eos]."""

src/transformers/models/mctct/processing_mctct.py

@@ -15,6 +15,7 @@
 """
 Speech processor class for M-CTC-T
 """
+import warnings
 from contextlib import contextmanager
 
 from ...processing_utils import ProcessorMixin
@@ -39,6 +40,7 @@ class MCTCTProcessor(ProcessorMixin):
     def __init__(self, feature_extractor, tokenizer):
         super().__init__(feature_extractor, tokenizer)
         self.current_processor = self.feature_extractor
+        self._in_target_context_manager = False
 
     def __call__(self, *args, **kwargs):
         """
@@ -47,8 +49,36 @@ class MCTCTProcessor(ProcessorMixin):
         [`~MCTCTProcessor.as_target_processor`] this method forwards all its arguments to AutoTokenizer's
         [`~AutoTokenizer.__call__`]. Please refer to the doctsring of the above two methods for more information.
         """
+        # For backward compatibility
+        if self._in_target_context_manager:
             return self.current_processor(*args, **kwargs)
 
+        if "raw_speech" in kwargs:
+            warnings.warn("Using `raw_speech` as a keyword argument is deprecated. Use `audio` instead.")
+            audio = kwargs.pop("raw_speech")
+        else:
+            audio = kwargs.pop("audio", None)
+        text = kwargs.pop("text", None)
+        if len(args) > 0:
+            audio = args[0]
+            args = args[1:]
+
+        if audio is None and text is None:
+            raise ValueError("You need to specify either an `audio` or `text` input to process.")
+
+        if audio is not None:
+            inputs = self.feature_extractor(audio, *args, **kwargs)
+        if text is not None:
+            encodings = self.tokenizer(text, **kwargs)
+
+        if text is None:
+            return inputs
+        elif audio is None:
+            return encodings
+        else:
+            inputs["labels"] = encodings["input_ids"]
+            return inputs
+
     def batch_decode(self, *args, **kwargs):
         """
         This method forwards all its arguments to AutoTokenizer's [`~PreTrainedTokenizer.batch_decode`]. Please refer
@@ -63,8 +93,29 @@ class MCTCTProcessor(ProcessorMixin):
         [`~MCTCTProcessor.as_target_processor`] this method forwards all its arguments to PreTrainedTokenizer's
         [`~PreTrainedTokenizer.pad`]. Please refer to the docstring of the above two methods for more information.
         """
+        # For backward compatibility
+        if self._in_target_context_manager:
             return self.current_processor.pad(*args, **kwargs)
 
+        input_features = kwargs.pop("input_features", None)
+        labels = kwargs.pop("labels", None)
+        if len(args) > 0:
+            input_features = args[0]
+            args = args[1:]
+
+        if input_features is not None:
+            input_features = self.feature_extractor.pad(input_features, *args, **kwargs)
+        if labels is not None:
+            labels = self.tokenizer.pad(labels, **kwargs)
+
+        if labels is None:
+            return input_features
+        elif input_features is None:
+            return labels
+        else:
+            input_features["labels"] = labels["input_ids"]
+            return input_features
+
     def decode(self, *args, **kwargs):
         """
         This method forwards all its arguments to AutoTokenizer's [`~PreTrainedTokenizer.decode`]. Please refer to the
@@ -77,6 +128,13 @@ class MCTCTProcessor(ProcessorMixin):
         """
         Temporarily sets the tokenizer for processing the input. Useful for encoding the labels when fine-tuning MCTCT.
         """
+        warnings.warn(
+            "`as_target_processor` is deprecated and will be removed in v5 of Transformers. You can process your "
+            "labels by using the argument `text` of the regular `__call__` method (either in the same call as "
+            "your audio inputs, or in a separate call."
+        )
+        self._in_target_context_manager = True
         self.current_processor = self.tokenizer
         yield
         self.current_processor = self.feature_extractor
+        self._in_target_context_manager = False

src/transformers/models/mt5/modeling_flax_mt5.py

@@ -57,8 +57,7 @@ class FlaxMT5Model(FlaxT5Model):
     >>> summary = "Weiter Verhandlung in Syrien."
     >>> inputs = tokenizer(article, return_tensors="np")
 
-    >>> with tokenizer.as_target_tokenizer():
-    ...     decoder_input_ids = tokenizer(summary, return_tensors="np").input_ids
+    >>> decoder_input_ids = tokenizer(text_target=summary, return_tensors="np").input_ids
 
     >>> outputs = model(input_ids=inputs["input_ids"], decoder_input_ids=decoder_input_ids)
     >>> hidden_states = outputs.last_hidden_state
@@ -84,8 +83,7 @@ class FlaxMT5EncoderModel(FlaxT5EncoderModel):
     >>> summary = "Weiter Verhandlung in Syrien."
     >>> inputs = tokenizer(article, return_tensors="np")
 
-    >>> with tokenizer.as_target_tokenizer():
-    ...     decoder_input_ids = tokenizer(summary, return_tensors="np").input_ids
+    >>> decoder_input_ids = tokenizer(text_target=summary, return_tensors="np").input_ids
 
     >>> outputs = model(input_ids=inputs["input_ids"])
     >>> hidden_states = outputs.last_hidden_state
@@ -111,8 +109,7 @@ class FlaxMT5ForConditionalGeneration(FlaxT5ForConditionalGeneration):
     >>> summary = "Weiter Verhandlung in Syrien."
     >>> inputs = tokenizer(article, return_tensors="np")
 
-    >>> with tokenizer.as_target_tokenizer():
-    ...     decoder_input_ids = tokenizer(summary, return_tensors="np").input_ids
+    >>> decoder_input_ids = tokenizer(text_target=summary, return_tensors="np").input_ids
 
     >>> outputs = model(**inputs, decoder_input_ids=decoder_input_ids)
     >>> logits = outputs.logits

src/transformers/models/mt5/modeling_mt5.py

@@ -40,8 +40,7 @@ class MT5Model(T5Model):
     >>> article = "UN Offizier sagt, dass weiter verhandelt werden muss in Syrien."
     >>> summary = "Weiter Verhandlung in Syrien."
     >>> inputs = tokenizer(article, return_tensors="pt")
-    >>> with tokenizer.as_target_tokenizer():
-    ...     labels = tokenizer(summary, return_tensors="pt")
+    >>> labels = tokenizer(text_target=summary, return_tensors="pt")
 
     >>> outputs = model(input_ids=inputs["input_ids"], decoder_input_ids=labels["input_ids"])
     >>> hidden_states = outputs.last_hidden_state
@@ -73,11 +72,9 @@ class MT5ForConditionalGeneration(T5ForConditionalGeneration):
     >>> tokenizer = T5Tokenizer.from_pretrained("google/mt5-small")
     >>> article = "UN Offizier sagt, dass weiter verhandelt werden muss in Syrien."
     >>> summary = "Weiter Verhandlung in Syrien."
-    >>> inputs = tokenizer(article, return_tensors="pt")
-    >>> with tokenizer.as_target_tokenizer():
-    ...     labels = tokenizer(summary, return_tensors="pt")
+    >>> inputs = tokenizer(article, text_target=summary, return_tensors="pt")
 
-    >>> outputs = model(**inputs, labels=labels["input_ids"])
+    >>> outputs = model(**inputs)
     >>> loss = outputs.loss
     ```"""
 

src/transformers/models/mt5/modeling_tf_mt5.py

@@ -40,8 +40,7 @@ class TFMT5Model(TFT5Model):
     >>> article = "UN Offizier sagt, dass weiter verhandelt werden muss in Syrien."
     >>> summary = "Weiter Verhandlung in Syrien."
     >>> inputs = tokenizer(article, return_tensors="tf")
-    >>> with tokenizer.as_target_tokenizer():
-    ...     labels = tokenizer(summary, return_tensors="tf")
+    >>> labels = tokenizer(text_target=summary, return_tensors="tf")
 
     >>> outputs = model(input_ids=inputs["input_ids"], decoder_input_ids=labels["input_ids"])
     >>> hidden_states = outputs.last_hidden_state
@@ -64,11 +63,9 @@ class TFMT5ForConditionalGeneration(TFT5ForConditionalGeneration):
     >>> tokenizer = T5Tokenizer.from_pretrained("google/mt5-small")
     >>> article = "UN Offizier sagt, dass weiter verhandelt werden muss in Syrien."
     >>> summary = "Weiter Verhandlung in Syrien."
-    >>> inputs = tokenizer(article, return_tensors="tf")
-    >>> with tokenizer.as_target_tokenizer():
-    ...     labels = tokenizer(summary, return_tensors="tf")
+    >>> inputs = tokenizer(article, text_target=summary, return_tensors="tf")
 
-    >>> outputs = model(**inputs, labels=labels["input_ids"])
+    >>> outputs = model(**inputs)
     >>> loss = outputs.loss
     ```"""
 

src/transformers/models/nllb/tokenization_nllb.py

@@ -14,7 +14,6 @@
 # limitations under the License.
 
 import os
-from contextlib import contextmanager
 from shutil import copyfile
 from typing import Any, Dict, List, Optional, Tuple
 
@@ -67,10 +66,7 @@ class NllbTokenizer(PreTrainedTokenizer):
     ... )
     >>> example_english_phrase = " UN Chief Says There Is No Military Solution in Syria"
     >>> expected_translation_french = "Le chef de l'ONU affirme qu'il n'y a pas de solution militaire en Syrie."
-    >>> inputs = tokenizer(example_english_phrase, return_tensors="pt")
-    >>> with tokenizer.as_target_tokenizer():
-    ...     labels = tokenizer(expected_translation_french, return_tensors="pt")
-    >>> inputs["labels"] = labels["input_ids"]
+    >>> inputs = tokenizer(example_english_phrase, text_target=expected_translation_french, return_tensors="pt")
     ```
 
     Args:
@@ -386,15 +382,11 @@ class NllbTokenizer(PreTrainedTokenizer):
         self.tgt_lang = tgt_lang
         return super().prepare_seq2seq_batch(src_texts, tgt_texts, **kwargs)
 
-    @contextmanager
-    def as_target_tokenizer(self):
-        """
-        Temporarily sets the tokenizer for encoding the targets. Useful for tokenizer associated to
-        sequence-to-sequence models that need a slightly different processing for the labels.
-        """
-        self.set_tgt_lang_special_tokens(self.tgt_lang)
-        yield
-        self.set_src_lang_special_tokens(self.src_lang)
+    def _switch_to_input_mode(self):
+        return self.set_src_lang_special_tokens(self.src_lang)
+
+    def _switch_to_target_mode(self):
+        return self.set_tgt_lang_special_tokens(self.tgt_lang)
 
     def set_src_lang_special_tokens(self, src_lang) -> None:
         """Reset the special tokens to the source lang setting. No prefix and suffix=[eos, src_lang_code]."""

src/transformers/models/nllb/tokenization_nllb_fast.py

@@ -14,7 +14,6 @@
 # limitations under the License.
 
 import os
-from contextlib import contextmanager
 from shutil import copyfile
 from typing import List, Optional, Tuple
 
@@ -80,10 +79,7 @@ class NllbTokenizerFast(PreTrainedTokenizerFast):
     ... )
     >>> example_english_phrase = " UN Chief Says There Is No Military Solution in Syria"
     >>> expected_translation_french = "Le chef de l'ONU affirme qu'il n'y a pas de solution militaire en Syrie."
-    >>> inputs = tokenizer(example_english_phrase, return_tensors="pt")
-    >>> with tokenizer.as_target_tokenizer():
-    ...     labels = tokenizer(expected_translation_french, return_tensors="pt")
-    >>> inputs["labels"] = labels["input_ids"]
+    >>> inputs = tokenizer(example_english_phrase, text_target=expected_translation_french, return_tensors="pt")
     ```
 
     Args:
@@ -284,15 +280,11 @@ class NllbTokenizerFast(PreTrainedTokenizerFast):
         self.tgt_lang = tgt_lang
         return super().prepare_seq2seq_batch(src_texts, tgt_texts, **kwargs)
 
-    @contextmanager
-    def as_target_tokenizer(self):
-        """
-        Temporarily sets the tokenizer for encoding the targets. Useful for tokenizer associated to
-        sequence-to-sequence models that need a slightly different processing for the labels.
-        """
-        self.set_tgt_lang_special_tokens(self.tgt_lang)
-        yield
-        self.set_src_lang_special_tokens(self.src_lang)
+    def _switch_to_input_mode(self):
+        return self.set_src_lang_special_tokens(self.src_lang)
+
+    def _switch_to_target_mode(self):
+        return self.set_tgt_lang_special_tokens(self.tgt_lang)
 
     def set_src_lang_special_tokens(self, src_lang) -> None:
         """Reset the special tokens to the source lang setting. No prefix and suffix=[eos, src_lang_code]."""

src/transformers/models/plbart/tokenization_plbart.py

@@ -14,7 +14,6 @@
 # limitations under the License.
 
 import os
-from contextlib import contextmanager
 from shutil import copyfile
 from typing import Any, Dict, List, Optional, Tuple
 
@@ -153,10 +152,7 @@ class PLBartTokenizer(PreTrainedTokenizer):
     >>> tokenizer = PLBartTokenizer.from_pretrained("uclanlp/plbart-python-en_XX", src_lang="python", tgt_lang="en_XX")
     >>> example_python_phrase = "def maximum(a,b,c):NEW_LINE_INDENTreturn max([a,b,c])"
     >>> expected_translation_english = "Returns the maximum value of a b c."
-    >>> inputs = tokenizer(example_python_phrase, return_tensors="pt")
-    >>> with tokenizer.as_target_tokenizer():
-    ...     labels = tokenizer(expected_translation_english, return_tensors="pt")
-    >>> inputs["labels"] = labels["input_ids"]
+    >>> inputs = tokenizer(example_python_phrase, text_target=expected_translation_english, return_tensors="pt")
     ```"""
 
     vocab_files_names = VOCAB_FILES_NAMES
@@ -441,15 +437,11 @@ class PLBartTokenizer(PreTrainedTokenizer):
         self.tgt_lang = tgt_lang
         return super().prepare_seq2seq_batch(src_texts, tgt_texts, **kwargs)
 
-    @contextmanager
-    def as_target_tokenizer(self):
-        """
-        Temporarily sets the tokenizer for encoding the targets. Useful for tokenizer associated to
-        sequence-to-sequence models that need a slightly different processing for the labels.
-        """
-        self.set_tgt_lang_special_tokens(self.tgt_lang)
-        yield
-        self.set_src_lang_special_tokens(self.src_lang)
+    def _switch_to_input_mode(self):
+        return self.set_src_lang_special_tokens(self.src_lang)
+
+    def _switch_to_target_mode(self):
+        return self.set_tgt_lang_special_tokens(self.tgt_lang)
 
     def set_src_lang_special_tokens(self, src_lang) -> None:
         """Reset the special tokens to the source lang setting. No prefix and suffix=[eos, src_lang_code]."""

src/transformers/models/rag/modeling_rag.py

@@ -818,8 +818,7 @@ class RagSequenceForGeneration(RagPreTrainedModel):
         >>> model = RagSequenceForGeneration.from_pretrained("facebook/rag-token-nq", retriever=retriever)
 
         >>> inputs = tokenizer("How many people live in Paris?", return_tensors="pt")
-        >>> with tokenizer.as_target_tokenizer():
-        ...     targets = tokenizer("In Paris, there are 10 million people.", return_tensors="pt")
+        >>> targets = tokenizer(text_target="In Paris, there are 10 million people.", return_tensors="pt")
         >>> input_ids = inputs["input_ids"]
         >>> labels = targets["input_ids"]
         >>> outputs = model(input_ids=input_ids, labels=labels)
@@ -1287,8 +1286,7 @@ class RagTokenForGeneration(RagPreTrainedModel):
         >>> model = RagTokenForGeneration.from_pretrained("facebook/rag-token-nq", retriever=retriever)
 
         >>> inputs = tokenizer("How many people live in Paris?", return_tensors="pt")
-        >>> with tokenizer.as_target_tokenizer():
-        ...     targets = tokenizer("In Paris, there are 10 million people.", return_tensors="pt")
+        >>> targets = tokenizer(text_target="In Paris, there are 10 million people.", return_tensors="pt")
         >>> input_ids = inputs["input_ids"]
         >>> labels = targets["input_ids"]
         >>> outputs = model(input_ids=input_ids, labels=labels)

src/transformers/models/rag/tokenization_rag.py

@@ -15,7 +15,6 @@
 """Tokenization classes for RAG."""
 import os
 import warnings
-from contextlib import contextmanager
 from typing import List, Optional
 
 from ...tokenization_utils_base import BatchEncoding
@@ -68,16 +67,12 @@ class RagTokenizer:
     def decode(self, *args, **kwargs):
         return self.generator.decode(*args, **kwargs)
 
-    @contextmanager
-    def as_target_tokenizer(self):
-        """
-        Temporarily sets the tokenizer for encoding the targets. Useful for tokenizer associated to
-        sequence-to-sequence models that need a slightly different processing for the labels.
-        """
-        self.current_tokenizer = self.generator
-        yield
+    def _switch_to_input_mode(self):
         self.current_tokenizer = self.question_encoder
 
+    def _switch_to_target_mode(self):
+        self.current_tokenizer = self.generator
+
     def prepare_seq2seq_batch(
         self,
         src_texts: List[str],
@@ -110,11 +105,10 @@ class RagTokenizer:
         if tgt_texts is None:
             return model_inputs
         # Process tgt_texts
-        with self.as_target_tokenizer():
         if max_target_length is None:
             max_target_length = self.current_tokenizer.model_max_length
         labels = self(
-                tgt_texts,
+            text_target=tgt_texts,
             add_special_tokens=True,
             return_tensors=return_tensors,
             padding=padding,

src/transformers/models/speech_encoder_decoder/modeling_speech_encoder_decoder.py

@@ -482,8 +482,7 @@ class SpeechEncoderDecoderModel(PreTrainedModel):
         'Mr. Quilter ist der Apostel der Mittelschicht und wir freuen uns, sein Evangelium willkommen heißen zu können.'
 
         >>> # Training: Train model on English transcription
-        >>> with processor.as_target_processor():
-        ...     labels = processor(ds[0]["text"], return_tensors="pt").input_ids
+        >>> labels = processor(text=ds[0]["text"], return_tensors="pt").input_ids
 
         >>> loss = model(input_values, labels=labels).loss
         >>> loss.backward()

src/transformers/models/speech_to_text/processing_speech_to_text.py

@@ -15,6 +15,7 @@
 """
 Speech processor class for Speech2Text
 """
+import warnings
 from contextlib import contextmanager
 
 from ...processing_utils import ProcessorMixin
@@ -41,6 +42,7 @@ class Speech2TextProcessor(ProcessorMixin):
     def __init__(self, feature_extractor, tokenizer):
         super().__init__(feature_extractor, tokenizer)
         self.current_processor = self.feature_extractor
+        self._in_target_context_manager = False
 
     def __call__(self, *args, **kwargs):
         """
@@ -50,8 +52,36 @@ class Speech2TextProcessor(ProcessorMixin):
         [`~Speech2TextTokenizer.__call__`]. Please refer to the doctsring of the above two methods for more
         information.
         """
+        # For backward compatibility
+        if self._in_target_context_manager:
             return self.current_processor(*args, **kwargs)
 
+        if "raw_speech" in kwargs:
+            warnings.warn("Using `raw_speech` as a keyword argument is deprecated. Use `audio` instead.")
+            audio = kwargs.pop("raw_speech")
+        else:
+            audio = kwargs.pop("audio", None)
+        text = kwargs.pop("text", None)
+        if len(args) > 0:
+            audio = args[0]
+            args = args[1:]
+
+        if audio is None and text is None:
+            raise ValueError("You need to specify either an `audio` or `text` input to process.")
+
+        if audio is not None:
+            inputs = self.feature_extractor(audio, *args, **kwargs)
+        if text is not None:
+            encodings = self.tokenizer(text, **kwargs)
+
+        if text is None:
+            return inputs
+        elif audio is None:
+            return encodings
+        else:
+            inputs["labels"] = encodings["input_ids"]
+            return inputs
+
     def batch_decode(self, *args, **kwargs):
         """
         This method forwards all its arguments to Speech2TextTokenizer's [`~PreTrainedTokenizer.batch_decode`]. Please
@@ -72,6 +102,13 @@ class Speech2TextProcessor(ProcessorMixin):
         Temporarily sets the tokenizer for processing the input. Useful for encoding the labels when fine-tuning
         Speech2Text.
         """
+        warnings.warn(
+            "`as_target_processor` is deprecated and will be removed in v5 of Transformers. You can process your "
+            "labels by using the argument `text` of the regular `__call__` method (either in the same call as "
+            "your audio inputs, or in a separate call."
+        )
+        self._in_target_context_manager = True
         self.current_processor = self.tokenizer
         yield
         self.current_processor = self.feature_extractor
+        self._in_target_context_manager = False

src/transformers/models/speech_to_text_2/processing_speech_to_text_2.py

@@ -15,6 +15,7 @@
 """
 Speech processor class for Speech2Text2
 """
+import warnings
 from contextlib import contextmanager
 
 from ...processing_utils import ProcessorMixin
@@ -40,6 +41,7 @@ class Speech2Text2Processor(ProcessorMixin):
     def __init__(self, feature_extractor, tokenizer):
         super().__init__(feature_extractor, tokenizer)
         self.current_processor = self.feature_extractor
+        self._in_target_context_manager = False
 
     def __call__(self, *args, **kwargs):
         """
@@ -49,8 +51,36 @@ class Speech2Text2Processor(ProcessorMixin):
         Speech2Text2Tokenizer's [`~Speech2Text2Tokenizer.__call__`]. Please refer to the doctsring of the above two
         methods for more information.
         """
+        # For backward compatibility
+        if self._in_target_context_manager:
             return self.current_processor(*args, **kwargs)
 
+        if "raw_speech" in kwargs:
+            warnings.warn("Using `raw_speech` as a keyword argument is deprecated. Use `audio` instead.")
+            audio = kwargs.pop("raw_speech")
+        else:
+            audio = kwargs.pop("audio", None)
+        text = kwargs.pop("text", None)
+        if len(args) > 0:
+            audio = args[0]
+            args = args[1:]
+
+        if audio is None and text is None:
+            raise ValueError("You need to specify either an `audio` or `text` input to process.")
+
+        if audio is not None:
+            inputs = self.feature_extractor(audio, *args, **kwargs)
+        if text is not None:
+            encodings = self.tokenizer(text, **kwargs)
+
+        if text is None:
+            return inputs
+        elif audio is None:
+            return encodings
+        else:
+            inputs["labels"] = encodings["input_ids"]
+            return inputs
+
     def batch_decode(self, *args, **kwargs):
         """
         This method forwards all its arguments to Speech2Text2Tokenizer's [`~PreTrainedTokenizer.batch_decode`]. Please
@@ -71,6 +101,13 @@ class Speech2Text2Processor(ProcessorMixin):
         Temporarily sets the tokenizer for processing the input. Useful for encoding the labels when fine-tuning
         Speech2Text2.
         """
+        warnings.warn(
+            "`as_target_processor` is deprecated and will be removed in v5 of Transformers. You can process your "
+            "labels by using the argument `text` of the regular `__call__` method (either in the same call as "
+            "your audio inputs, or in a separate call."
+        )
+        self._in_target_context_manager = True
         self.current_processor = self.tokenizer
         yield
         self.current_processor = self.feature_extractor
+        self._in_target_context_manager = False

src/transformers/models/tapex/tokenization_tapex.py

@@ -17,7 +17,6 @@
 import json
 import os
 import random
-from contextlib import contextmanager
 from functools import lru_cache
 from typing import Dict, List, Optional, Tuple, Union
 
@@ -63,12 +62,6 @@ class TapexTruncationStrategy(ExplicitEnum):
     DROP_ROWS_TO_FIT = "drop_rows_to_fit"
 
 
-class TokenizerStrategy(ExplicitEnum):
-
-    TOKENIZE_SOURCE = "tokenize_source"
-    TOKENIZE_TARGET = "tokenize_target"
-
-
 TAPEX_ENCODE_PLUS_ADDITIONAL_KWARGS_DOCSTRING = r"""
             add_special_tokens (`bool`, *optional*, defaults to `True`):
                 Whether or not to encode the sequences with the special tokens relative to their model.
@@ -341,9 +334,6 @@ class TapexTokenizer(PreTrainedTokenizer):
         self.max_cell_length = max_cell_length
         self.table_linearize = IndexedRowTableLinearize()
 
-        # property to decide using which call function
-        self.current_tokenizer = TokenizerStrategy.TOKENIZE_SOURCE
-
     def build_inputs_with_special_tokens(
         self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None
     ) -> List[int]:
@@ -555,9 +545,7 @@ class TapexTokenizer(PreTrainedTokenizer):
                 Optionally, the corresponding answer to the questions as supervision.
         """
 
-        if self.current_tokenizer == TokenizerStrategy.TOKENIZE_SOURCE:
-            if table is None:
-                raise ValueError("Please ensure that the table is not empty if you use TAPEX to encode source.")
+        if table is not None:
             return self.source_call_func(
                 table=table,
                 query=query,
@@ -578,9 +566,7 @@ class TapexTokenizer(PreTrainedTokenizer):
                 verbose=verbose,
                 **kwargs,
             )
-        else:
-            if answer is None:
-                raise ValueError("Please ensure that the answer is not empty if you use TAPEX to encode target.")
+        elif answer is not None:
             return self.target_call_func(
                 answer=answer,
                 add_special_tokens=add_special_tokens,
@@ -599,6 +585,8 @@ class TapexTokenizer(PreTrainedTokenizer):
                 verbose=verbose,
                 **kwargs,
             )
+        else:
+            raise ValueError("You need to provide either a `table` or an `answer`.")
 
     def source_call_func(
         self,
@@ -1330,17 +1318,6 @@ class TapexTokenizer(PreTrainedTokenizer):
             verbose=verbose,
         )
 
-    @contextmanager
-    def as_target_tokenizer(self):
-        """
-        Temporarily sets the tokenizer for encoding the targets. Useful for tokenizer associated to
-        sequence-to-sequence models that need a slightly different processing for the labels.
-        """
-        self.current_tokenizer = TokenizerStrategy.TOKENIZE_TARGET
-        yield
-        # restore the call function
-        self.current_tokenizer = TokenizerStrategy.TOKENIZE_SOURCE
-
     def prepare_table_query(
         self,
         table,

src/transformers/models/trocr/processing_trocr.py

@@ -15,6 +15,7 @@
 """
 Processor class for TrOCR.
 """
+import warnings
 from contextlib import contextmanager
 
 from ...processing_utils import ProcessorMixin
@@ -40,6 +41,7 @@ class TrOCRProcessor(ProcessorMixin):
     def __init__(self, feature_extractor, tokenizer):
         super().__init__(feature_extractor, tokenizer)
         self.current_processor = self.feature_extractor
+        self._in_target_context_manager = False
 
     def __call__(self, *args, **kwargs):
         """
@@ -48,8 +50,36 @@ class TrOCRProcessor(ProcessorMixin):
         [`~TrOCRProcessor.as_target_processor`] this method forwards all its arguments to TrOCRTokenizer's
         [`~TrOCRTokenizer.__call__`]. Please refer to the doctsring of the above two methods for more information.
         """
+        # For backward compatibility
+        if self._in_target_context_manager:
             return self.current_processor(*args, **kwargs)
 
+        if "raw_speech" in kwargs:
+            warnings.warn("Using `raw_speech` as a keyword argument is deprecated. Use `audio` instead.")
+            audio = kwargs.pop("raw_speech")
+        else:
+            audio = kwargs.pop("audio", None)
+        text = kwargs.pop("text", None)
+        if len(args) > 0:
+            audio = args[0]
+            args = args[1:]
+
+        if audio is None and text is None:
+            raise ValueError("You need to specify either an `audio` or `text` input to process.")
+
+        if audio is not None:
+            inputs = self.feature_extractor(audio, *args, **kwargs)
+        if text is not None:
+            encodings = self.tokenizer(text, **kwargs)
+
+        if text is None:
+            return inputs
+        elif audio is None:
+            return encodings
+        else:
+            inputs["labels"] = encodings["input_ids"]
+            return inputs
+
     def batch_decode(self, *args, **kwargs):
         """
         This method forwards all its arguments to TrOCRTokenizer's [`~PreTrainedTokenizer.batch_decode`]. Please refer
@@ -69,6 +99,13 @@ class TrOCRProcessor(ProcessorMixin):
         """
         Temporarily sets the tokenizer for processing the input. Useful for encoding the labels when fine-tuning TrOCR.
         """
+        warnings.warn(
+            "`as_target_processor` is deprecated and will be removed in v5 of Transformers. You can process your "
+            "labels by using the argument `text` of the regular `__call__` method (either in the same call as "
+            "your audio inputs, or in a separate call."
+        )
+        self._in_target_context_manager = True
         self.current_processor = self.tokenizer
         yield
         self.current_processor = self.feature_extractor
+        self._in_target_context_manager = False

src/transformers/models/wav2vec2/modeling_tf_wav2vec2.py

@@ -1650,9 +1650,8 @@ class TFWav2Vec2ForCTC(TFWav2Vec2PreTrainedModel):
         >>> # compute loss
         >>> target_transcription = "A MAN SAID TO THE UNIVERSE SIR I EXIST"
 
-        >>> # wrap processor as target processor to encode labels
-        >>> with processor.as_target_processor():
-        ...     labels = processor(transcription, return_tensors="tf").input_ids
+        >>> # Pass transcription as `text` to encode labels
+        >>> labels = processor(text=transcription, return_tensors="tf").input_ids
 
         >>> loss = model(input_values, labels=labels).loss
         ```"""

src/transformers/models/wav2vec2/processing_wav2vec2.py

@@ -43,6 +43,7 @@ class Wav2Vec2Processor(ProcessorMixin):
     def __init__(self, feature_extractor, tokenizer):
         super().__init__(feature_extractor, tokenizer)
         self.current_processor = self.feature_extractor
+        self._in_target_context_manager = False
 
     @classmethod
     def from_pretrained(cls, pretrained_model_name_or_path, **kwargs):
@@ -70,8 +71,36 @@ class Wav2Vec2Processor(ProcessorMixin):
         [`~Wav2Vec2Processor.as_target_processor`] this method forwards all its arguments to PreTrainedTokenizer's
         [`~PreTrainedTokenizer.__call__`]. Please refer to the docstring of the above two methods for more information.
         """
+        # For backward compatibility
+        if self._in_target_context_manager:
             return self.current_processor(*args, **kwargs)
 
+        if "raw_speech" in kwargs:
+            warnings.warn("Using `raw_speech` as a keyword argument is deprecated. Use `audio` instead.")
+            audio = kwargs.pop("raw_speech")
+        else:
+            audio = kwargs.pop("audio", None)
+        text = kwargs.pop("text", None)
+        if len(args) > 0:
+            audio = args[0]
+            args = args[1:]
+
+        if audio is None and text is None:
+            raise ValueError("You need to specify either an `audio` or `text` input to process.")
+
+        if audio is not None:
+            inputs = self.feature_extractor(audio, *args, **kwargs)
+        if text is not None:
+            encodings = self.tokenizer(text, **kwargs)
+
+        if text is None:
+            return inputs
+        elif audio is None:
+            return encodings
+        else:
+            inputs["labels"] = encodings["input_ids"]
+            return inputs
+
     def pad(self, *args, **kwargs):
         """
         When used in normal mode, this method forwards all its arguments to Wav2Vec2FeatureExtractor's
@@ -79,8 +108,29 @@ class Wav2Vec2Processor(ProcessorMixin):
         [`~Wav2Vec2Processor.as_target_processor`] this method forwards all its arguments to PreTrainedTokenizer's
         [`~PreTrainedTokenizer.pad`]. Please refer to the docstring of the above two methods for more information.
         """
+        # For backward compatibility
+        if self._in_target_context_manager:
             return self.current_processor.pad(*args, **kwargs)
 
+        input_features = kwargs.pop("input_features", None)
+        labels = kwargs.pop("labels", None)
+        if len(args) > 0:
+            input_features = args[0]
+            args = args[1:]
+
+        if input_features is not None:
+            input_features = self.feature_extractor.pad(input_features, *args, **kwargs)
+        if labels is not None:
+            labels = self.tokenizer.pad(labels, **kwargs)
+
+        if labels is None:
+            return input_features
+        elif input_features is None:
+            return labels
+        else:
+            input_features["labels"] = labels["input_ids"]
+            return input_features
+
     def batch_decode(self, *args, **kwargs):
         """
         This method forwards all its arguments to PreTrainedTokenizer's [`~PreTrainedTokenizer.batch_decode`]. Please
@@ -101,6 +151,13 @@ class Wav2Vec2Processor(ProcessorMixin):
         Temporarily sets the tokenizer for processing the input. Useful for encoding the labels when fine-tuning
         Wav2Vec2.
         """
+        warnings.warn(
+            "`as_target_processor` is deprecated and will be removed in v5 of Transformers. You can process your "
+            "labels by using the argument `text` of the regular `__call__` method (either in the same call as "
+            "your audio inputs, or in a separate call."
+        )
+        self._in_target_context_manager = True
         self.current_processor = self.tokenizer
         yield
         self.current_processor = self.feature_extractor
+        self._in_target_context_manager = False

src/transformers/models/wav2vec2_with_lm/processing_wav2vec2_with_lm.py

@@ -16,6 +16,7 @@
 Speech processor class for Wav2Vec2
 """
 import os
+import warnings
 from contextlib import contextmanager
 from dataclasses import dataclass
 from multiprocessing import get_context
@@ -99,6 +100,7 @@ class Wav2Vec2ProcessorWithLM(ProcessorMixin):
 
         self.decoder = decoder
         self.current_processor = self.feature_extractor
+        self._in_target_context_manager = False
 
     def save_pretrained(self, save_directory):
         super().save_pretrained(save_directory)
@@ -214,8 +216,36 @@ class Wav2Vec2ProcessorWithLM(ProcessorMixin):
         Wav2Vec2CTCTokenizer's [`~Wav2Vec2CTCTokenizer.__call__`]. Please refer to the docstring of the above two
         methods for more information.
         """
+        # For backward compatibility
+        if self._in_target_context_manager:
             return self.current_processor(*args, **kwargs)
 
+        if "raw_speech" in kwargs:
+            warnings.warn("Using `raw_speech` as a keyword argument is deprecated. Use `audio` instead.")
+            audio = kwargs.pop("raw_speech")
+        else:
+            audio = kwargs.pop("audio", None)
+        text = kwargs.pop("text", None)
+        if len(args) > 0:
+            audio = args[0]
+            args = args[1:]
+
+        if audio is None and text is None:
+            raise ValueError("You need to specify either an `audio` or `text` input to process.")
+
+        if audio is not None:
+            inputs = self.feature_extractor(audio, *args, **kwargs)
+        if text is not None:
+            encodings = self.tokenizer(text, **kwargs)
+
+        if text is None:
+            return inputs
+        elif audio is None:
+            return encodings
+        else:
+            inputs["labels"] = encodings["input_ids"]
+            return inputs
+
     def pad(self, *args, **kwargs):
         """
         When used in normal mode, this method forwards all its arguments to Wav2Vec2FeatureExtractor's
@@ -224,8 +254,29 @@ class Wav2Vec2ProcessorWithLM(ProcessorMixin):
         Wav2Vec2CTCTokenizer's [`~Wav2Vec2CTCTokenizer.pad`]. Please refer to the docstring of the above two methods
         for more information.
         """
+        # For backward compatibility
+        if self._in_target_context_manager:
             return self.current_processor.pad(*args, **kwargs)
 
+        input_features = kwargs.pop("input_features", None)
+        labels = kwargs.pop("labels", None)
+        if len(args) > 0:
+            input_features = args[0]
+            args = args[1:]
+
+        if input_features is not None:
+            input_features = self.feature_extractor.pad(input_features, *args, **kwargs)
+        if labels is not None:
+            labels = self.tokenizer.pad(labels, **kwargs)
+
+        if labels is None:
+            return input_features
+        elif input_features is None:
+            return labels
+        else:
+            input_features["labels"] = labels["input_ids"]
+            return input_features
+
     def batch_decode(
         self,
         logits: np.ndarray,
@@ -486,9 +537,16 @@ class Wav2Vec2ProcessorWithLM(ProcessorMixin):
     @contextmanager
     def as_target_processor(self):
         """
-        Temporarily sets the tokenizer for processing the input. Useful for encoding the labels when fine-tuning
+        Temporarily sets the processor for processing the target. Useful for encoding the labels when fine-tuning
         Wav2Vec2.
         """
+        warnings.warn(
+            "`as_target_processor` is deprecated and will be removed in v5 of Transformers. You can process your "
+            "labels by using the argument `text` of the regular `__call__` method (either in the same call as "
+            "your audio inputs, or in a separate call."
+        )
+        self._in_target_context_manager = True
         self.current_processor = self.tokenizer
         yield
         self.current_processor = self.feature_extractor
+        self._in_target_context_manager = False

src/transformers/tokenization_utils_base.py

@@ -1501,7 +1501,7 @@ class PreTrainedTokenizerBase(SpecialTokensMixin, PushToHubMixin):
         self.deprecation_warnings = (
             {}
         )  # Use to store when we have already noticed a deprecation warning (avoid overlogging).
-
+        self._in_target_context_manager = False
         super().__init__(**kwargs)
 
     @property
@@ -2431,8 +2431,12 @@ class PreTrainedTokenizerBase(SpecialTokensMixin, PushToHubMixin):
     @add_end_docstrings(ENCODE_KWARGS_DOCSTRING, ENCODE_PLUS_ADDITIONAL_KWARGS_DOCSTRING)
     def __call__(
         self,
-        text: Union[TextInput, PreTokenizedInput, List[TextInput], List[PreTokenizedInput]],
+        text: Union[TextInput, PreTokenizedInput, List[TextInput], List[PreTokenizedInput]] = None,
         text_pair: Optional[Union[TextInput, PreTokenizedInput, List[TextInput], List[PreTokenizedInput]]] = None,
+        text_target: Union[TextInput, PreTokenizedInput, List[TextInput], List[PreTokenizedInput]] = None,
+        text_pair_target: Optional[
+            Union[TextInput, PreTokenizedInput, List[TextInput], List[PreTokenizedInput]]
+        ] = None,
         add_special_tokens: bool = True,
         padding: Union[bool, str, PaddingStrategy] = False,
         truncation: Union[bool, str, TruncationStrategy] = False,
@@ -2455,15 +2459,85 @@ class PreTrainedTokenizerBase(SpecialTokensMixin, PushToHubMixin):
         sequences.
 
         Args:
-            text (`str`, `List[str]`, `List[List[str]]`):
+            text (`str`, `List[str]`, `List[List[str]]`, *optional*):
                 The sequence or batch of sequences to be encoded. Each sequence can be a string or a list of strings
                 (pretokenized string). If the sequences are provided as list of strings (pretokenized), you must set
                 `is_split_into_words=True` (to lift the ambiguity with a batch of sequences).
-            text_pair (`str`, `List[str]`, `List[List[str]]`):
+            text_pair (`str`, `List[str]`, `List[List[str]]`, *optional*):
                 The sequence or batch of sequences to be encoded. Each sequence can be a string or a list of strings
                 (pretokenized string). If the sequences are provided as list of strings (pretokenized), you must set
                 `is_split_into_words=True` (to lift the ambiguity with a batch of sequences).
-        """
+            text_target (`str`, `List[str]`, `List[List[str]]`, *optional*):
+                The sequence or batch of sequences to be encoded as target texts. Each sequence can be a string or a
+                list of strings (pretokenized string). If the sequences are provided as list of strings (pretokenized),
+                you must set `is_split_into_words=True` (to lift the ambiguity with a batch of sequences).
+            text_pair_target (`str`, `List[str]`, `List[List[str]]`, *optional*):
+                The sequence or batch of sequences to be encoded as target texts. Each sequence can be a string or a
+                list of strings (pretokenized string). If the sequences are provided as list of strings (pretokenized),
+                you must set `is_split_into_words=True` (to lift the ambiguity with a batch of sequences).
+        """
+        # To avoid duplicating
+        all_kwargs = dict(
+            add_special_tokens=add_special_tokens,
+            padding=padding,
+            truncation=truncation,
+            max_length=max_length,
+            stride=stride,
+            is_split_into_words=is_split_into_words,
+            pad_to_multiple_of=pad_to_multiple_of,
+            return_tensors=return_tensors,
+            return_token_type_ids=return_token_type_ids,
+            return_attention_mask=return_attention_mask,
+            return_overflowing_tokens=return_overflowing_tokens,
+            return_special_tokens_mask=return_special_tokens_mask,
+            return_offsets_mapping=return_offsets_mapping,
+            return_length=return_length,
+            verbose=verbose,
+        )
+        all_kwargs.update(kwargs)
+        if text is None and text_target is None:
+            raise ValueError("You need to specify either `text` or `text_target`.")
+        if text is not None:
+            # The context manager will send the inputs as normal texts and not text_target, but we shouldn't change the
+            # input mode in this case.
+            if not self._in_target_context_manager:
+                self._switch_to_input_mode()
+            encodings = self._call_one(text=text, text_pair=text_pair, **all_kwargs)
+        if text_target is not None:
+            self._switch_to_target_mode()
+            target_encodings = self._call_one(text=text_target, text_pair=text_pair_target, **all_kwargs)
+        # Leave back tokenizer in input mode
+        self._switch_to_input_mode()
+
+        if text_target is None:
+            return encodings
+        elif text is None:
+            return target_encodings
+        else:
+            encodings["labels"] = target_encodings["input_ids"]
+            return encodings
+
+    def _call_one(
+        self,
+        text: Union[TextInput, PreTokenizedInput, List[TextInput], List[PreTokenizedInput]],
+        text_pair: Optional[Union[TextInput, PreTokenizedInput, List[TextInput], List[PreTokenizedInput]]] = None,
+        add_special_tokens: bool = True,
+        padding: Union[bool, str, PaddingStrategy] = False,
+        truncation: Union[bool, str, TruncationStrategy] = False,
+        max_length: Optional[int] = None,
+        stride: int = 0,
+        is_split_into_words: bool = False,
+        pad_to_multiple_of: Optional[int] = None,
+        return_tensors: Optional[Union[str, TensorType]] = None,
+        return_token_type_ids: Optional[bool] = None,
+        return_attention_mask: Optional[bool] = None,
+        return_overflowing_tokens: bool = False,
+        return_special_tokens_mask: bool = False,
+        return_offsets_mapping: bool = False,
+        return_length: bool = False,
+        verbose: bool = True,
+        **kwargs
+    ) -> BatchEncoding:
         # Input type checking for clearer error
         def _is_valid_text_input(t):
             if isinstance(t, str):
@@ -3456,13 +3530,34 @@ class PreTrainedTokenizerBase(SpecialTokensMixin, PushToHubMixin):
                 )
             self.deprecation_warnings["sequence-length-is-longer-than-the-specified-maximum"] = True
 
+    def _switch_to_input_mode(self):
+        """
+        Private method to put the tokenizer in input mode (when it has different modes for input/outputs)
+        """
+        pass
+
+    def _switch_to_target_mode(self):
+        """
+        Private method to put the tokenizer in target mode (when it has different modes for input/outputs)
+        """
+        pass
+
     @contextmanager
     def as_target_tokenizer(self):
         """
         Temporarily sets the tokenizer for encoding the targets. Useful for tokenizer associated to
         sequence-to-sequence models that need a slightly different processing for the labels.
         """
+        warnings.warn(
+            "`as_target_tokenizer` is deprecated and will be removed in v5 of Transformers. You can tokenize your "
+            "labels by using the argument `text_target` of the regular `__call__` method (either in the same call as "
+            "your input texts if you use the same keyword arguments, or in a separate call."
+        )
+        self._switch_to_target_mode()
+        self._in_target_context_manager = True
         yield
+        self._in_target_context_manager = False
+        self._switch_to_input_mode()
 
     @classmethod
     def register_for_auto_class(cls, auto_class="AutoTokenizer"):
@@ -3563,14 +3658,17 @@ class PreTrainedTokenizerBase(SpecialTokensMixin, PushToHubMixin):
         # docstyle-ignore
         formatted_warning = """
 `prepare_seq2seq_batch` is deprecated and will be removed in version 5 of HuggingFace Transformers. Use the regular
-`__call__` method to prepare your inputs and the tokenizer under the `as_target_tokenizer` context manager to prepare
-your targets.
+`__call__` method to prepare your inputs and targets.
 
 Here is a short example:
 
+model_inputs = tokenizer(src_texts, text_target=tgt_texts, ...)
+
+If you either need to use different keyword arguments for the source and target texts, you should do two calls like
+this:
+
 model_inputs = tokenizer(src_texts, ...)
-with tokenizer.as_target_tokenizer():
-    labels = tokenizer(tgt_texts, ...)
+labels = tokenizer(text_target=tgt_texts, ...)
 model_inputs["labels"] = labels["input_ids"]
 
 See the documentation of your specific tokenizer for more details on the specific arguments to the tokenizer of choice.

src/transformers/utils/doc.py

@@ -428,8 +428,7 @@ PT_SPEECH_CTC_SAMPLE = r"""
     ```
 
     ```python
-    >>> with processor.as_target_processor():
-    ...     inputs["labels"] = processor(dataset[0]["text"], return_tensors="pt").input_ids
+    >>> inputs["labels"] = processor(text=dataset[0]["text"], return_tensors="pt").input_ids
 
     >>> # compute loss
     >>> loss = model(**inputs).loss
@@ -849,8 +848,7 @@ TF_SPEECH_CTC_SAMPLE = r"""
     ```
 
     ```python
-    >>> with processor.as_target_processor():
-    ...     inputs["labels"] = processor(dataset[0]["text"], return_tensors="tf").input_ids
+    >>> inputs["labels"] = processor(text=dataset[0]["text"], return_tensors="tf").input_ids
 
     >>> # compute loss
     >>> loss = model(**inputs).loss