Error importing theano “cannot import name gof”

Question

I am current getting the error

ImportError: cannot import name gof

when importing theano.

>>> import          


        

Answer 1

This ImportError can be caused because Theano is unable to compile the gof module itself. If this is the case, you will see an error message that looks like "Exception: Compilation Failed (return status=1): C:\Long\Path\...\mod.cpp:1: sorry, unimplemented: 64-bit mode not compiled in".

Fixing With Conda

If you are installing theano into a conda environment, make sure that you have a C compiler available to that environment.

The command

conda install m2w64-toolchain

will provide a C compiler to your environment that's isolated from the rest of the machine.

After the m2w64-toolchain package is installed, import theano should work

Fixing Manually

If you are installing Theano yourself, two points from these threads may help:

• Install the bleeding edge version of Theano
• Install libpython from http://www.lfd.uci.edu/%7Egohlke/pythonlibs/