Revert #20715 (#26734)

* fix

---------
Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>

src/transformers/utils/__init__.py

@@ -186,7 +186,9 @@ from .import_utils import (
     is_training_run_on_sagemaker,
     is_vision_available,
     requires_backends,
+    tf_required,
     torch_only_method,
+    torch_required,
 )
 from .peft_utils import (
     ADAPTER_CONFIG_NAME,

src/transformers/utils/import_utils.py

@@ -24,7 +24,7 @@ import subprocess
 import sys
 import warnings
 from collections import OrderedDict
-from functools import lru_cache
+from functools import lru_cache, wraps
 from itertools import chain
 from types import ModuleType
 from typing import Any, Tuple, Union
@@ -1222,6 +1222,40 @@ class DummyObject(type):
         requires_backends(cls, cls._backends)
 
 
+def torch_required(func):
+    warnings.warn(
+        "The method `torch_required` is deprecated and will be removed in v4.36. Use `requires_backends` instead.",
+        FutureWarning,
+    )
+
+    # Chose a different decorator name than in tests so it's clear they are not the same.
+    @wraps(func)
+    def wrapper(*args, **kwargs):
+        if is_torch_available():
+            return func(*args, **kwargs)
+        else:
+            raise ImportError(f"Method `{func.__name__}` requires PyTorch.")
+
+    return wrapper
+
+
+def tf_required(func):
+    warnings.warn(
+        "The method `tf_required` is deprecated and will be removed in v4.36. Use `requires_backends` instead.",
+        FutureWarning,
+    )
+
+    # Chose a different decorator name than in tests so it's clear they are not the same.
+    @wraps(func)
+    def wrapper(*args, **kwargs):
+        if is_tf_available():
+            return func(*args, **kwargs)
+        else:
+            raise ImportError(f"Method `{func.__name__}` requires TF.")
+
+    return wrapper
+
+
 def is_torch_fx_proxy(x):
     if is_torch_fx_available():
         import torch.fx