run baby_names.py error

[mphz]

, in _strip_unnecessary_contents_from_stack
for f, line_no, method, _ in result._traceback:
ValueError: too many values to unpack (expected 4)

[OutstanderWang]

I ran into the same error:
File "~/anaconda/lib/python2.7/site-packages/prettytensor/pretty_tensor_class.py", line 1335, in _strip_unnecessary_contents_from_stack
for f, line_no, method, _ in result._traceback:
ValueError: too many values to unpack