I don't understand your comment. Version 1.5.6 of what? The NumPy 1.16.0 notes say > Support for Python 3.4 been dropped, the supported Python versions are 2.

I don't understand your comment. Version 1.5.6 of what? The NumPy 1.16.0 notes say > Support for Python 3.4 been dropped, the supported Python versions are 2.7 and 3.5-3.7. That definitely sounds like NumPy 1.16.0 doesn't support python 3.4.