Py3k compatibility for snippet execution. (#1860)

docs/pubsub_snippets.py

@@ -412,19 +412,27 @@ def subscription_check_iam_permissions(client, to_delete):
  # [END subscription_check_iam_permissions]
 
 
+def _line_no(func):
+ code = getattr(func, '__code__', None) or getattr(func, 'func_code')
+ return code.co_firstlineno
+
+
 def _find_examples():
  funcs = [obj for obj in globals().values()
  if getattr(obj, '_snippet', False)]
- for func in sorted(funcs, key=lambda f: f.func_code.co_firstlineno):
+ for func in sorted(funcs, key=_line_no):
  yield func
 
 
+def _name_and_doc(func):
+ return func.__name__, func.__doc__
+
+
 def main():
  client = Client()
  for example in _find_examples():
  to_delete = []
- print('%-25s: %s' % (
- example.func_name, example.func_doc))
+ print('%-25s: %s' % _name_and_doc(example))
  try:
  example(client, to_delete)
  except AssertionError as e: