Fix "from tensorflow._api.v1 import *".

PiperOrigin-RevId: 214055060

tensorflow/api_template.__init__.py

@@ -14,9 +14,9 @@
 # ==============================================================================
 """Bring in all of the public TensorFlow interface into this module."""
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
+from __future__ import absolute_import as _absolute_import
+from __future__ import division as _division
+from __future__ import print_function as _print_function
 
 import os as _os
 
@@ -41,6 +41,11 @@ except (ImportError, AttributeError):
 from tensorflow.python.util.lazy_loader import LazyLoader  # pylint: disable=g-import-not-at-top
 contrib = LazyLoader('contrib', globals(), 'tensorflow.contrib')
 del LazyLoader
+# The templated code that replaces the placeholder above sometimes
+# sets the __all__ variable. If it does, we have to be sure to add
+# "contrib".
+if '__all__' in vars():
+  vars()['__all__'].append('contrib')
 
 from tensorflow.python.platform import flags  # pylint: disable=g-import-not-at-top
 app.flags = flags  # pylint: disable=undefined-variable
@@ -51,10 +56,6 @@ _tf_api_dir = _os.path.dirname(_os.path.dirname(app.__file__))  # pylint: disabl
 if _tf_api_dir not in __path__:
   __path__.append(_tf_api_dir)
 
-del absolute_import
-del division
-del print_function
-
 # These symbols appear because we import the python package which
 # in turn imports from tensorflow.core and tensorflow.python. They
 # must come from this module. So python adds these symbols for the

tensorflow/python/tools/api/generator/create_python_api.py

@@ -181,7 +181,6 @@ class _ModuleInitCodeBuilder(object):
 _names_with_underscore = [%s]
 __all__ = [_s for _s in dir() if not _s.startswith('_')]
 __all__.extend([_s for _s in _names_with_underscore])
-__all__.remove('print_function')
 ''' % underscore_names_str
 
     return module_text_map

tensorflow/tools/test/check_futures_test.py

@@ -37,6 +37,7 @@ BASE_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), '../..'))
 FUTURES_PATTERN = re.compile(r'^from __future__ import (\w+)\s*$')
 FUTURES_PATTERN_2 = re.compile(
     r'^from __future__ import (\w+), (\w+), (\w+)\s*$')
+FUTURES_PATTERN_3 = re.compile(r'^from __future__ import (\w+) as \w+\s*$')
 REQUIRED_FUTURES = frozenset(['absolute_import', 'division', 'print_function'])
 
 WHITELIST = [
@@ -59,6 +60,8 @@ def check_file(path, old_division):
   for line in open(path, encoding='utf-8') if six.PY3 else open(path):
     count += 1
     m = FUTURES_PATTERN.match(line)
+    if not m:
+      m = FUTURES_PATTERN_3.match(line)
     if m:
       futures.add(m.group(1))
     else: