ModuleNotFoundError: No module named 'connections'

Question

I am using pybrain library. When I import

from pybrain.structure import SigmoidLayer

I get the error

ModuleNotFoundError: No module named 'connections'

I am quite confused about the installation of pybrain. I am using python 3.6 and windows 10.

Answer 1

How did you install pybrain and which version of python are you using?

When i install it using pip3 and try

from pybrain.structure import SigmoidLayer

i get the same error as you, i then tried to install connections via pip3. This fails with a syntax error in connections.

I then tried it with python2:

pip2 install pybrain connections scipy

this works.

So if you are using python2 you just need this:

pip install connections