Merge pull request #608 from bwilbertz/fix-txt-iterator

fix txt_line_iterator to not stop at empty line

Author: lukaszkaiser

tensor2tensor/data_generators/text_problems.py

@@ -418,9 +418,9 @@ def example_reading_spec(self):
 def txt_line_iterator(txt_path):
   """Iterate through lines of file."""
   with tf.gfile.Open(txt_path) as f:
-    readline = lambda: f.readline().strip()
+    readline = lambda: f.readline()
     for line in iter(readline, ""):
-      yield line
+      yield line.strip()
 
 
 def text2text_txt_iterator(source_txt_path, target_txt_path):