allowing to load small number of examples

tensorflow_code/run_squad.py

@@ -207,7 +207,7 @@ class InputFeatures(object):
         self.end_position = end_position
 
 
-def read_squad_examples(input_file, is_training):
+def read_squad_examples(input_file, is_training, max_num=-1):
     """Read a SQuAD json file into a list of SquadExample."""
     with tf.gfile.Open(input_file, "r") as reader:
         input_data = json.load(reader)["data"]
@@ -219,6 +219,8 @@ def read_squad_examples(input_file, is_training):
 
     examples = []
     for entry in input_data:
+        if max_num != -1 and len(examples) > max_num:
+            break
         for paragraph in entry["paragraphs"]:
             paragraph_text = paragraph["context"]
             doc_tokens = []