ImportError: No module named scipy

Question

I am using Python 2.7 and trying to get PyBrain to work.

But I get this error even though scipy is installed -

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/site-packages/PyBrain-0.3.1-
py2.7.egg/pybrain/__init__.py", line 1, in <module>
    from pybrain.structure.__init__ import *
  File "/usr/local/lib/python2.7/site-packages/PyBrain-0.3.1-py2.7.egg/pybrain/structure/__init__.py", line 1, in <module>
    from pybrain.structure.connections.__init__ import *
  File "/usr/local/lib/python2.7/site-packages/PyBrain-0.3.1-py2.7.egg/pybrain/structure/connections/__init__.py", line 1, in <module>
    from pybrain.structure.connections.full import FullConnection
  File "/usr/local/lib/python2.7/site-packages/PyBrain-0.3.1-py2.7.egg/pybrain/structure/connections/full.py", line 3, in <module>
    from scipy import reshape, dot, outer
ImportError: No module named scipy

I have installed scipy using this command -

sudo apt-get install python-scipy

I get -

Reading package lists... Done
Building dependency tree       
Reading state information... Done
python-scipy is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

What should I do?

Answer 1

Try to install it as a python package using pip. You said you already tried:

sudo apt-get install python-scipy

Now run:

pip install scipy

I ran both and it worked on my Debian-based box.

Answer 2

To ensure easy and correct installation for python use pip from the get go

To install pip:

$ wget https://bootstrap.pypa.io/get-pip.py
$ sudo python2 get-pip.py   # for python 2.7
$ sudo python3 get-pip.py   # for python 3.x

To install scipy using pip:

$ pip2 install scipy    # for python 2.7
$ pip3 install scipy    # for python 3.x

Answer 3

Try to install it as a python package using pip as follows

$ sudo apt-get install python-scipy

If you want to run a python 3.x script, install scipy by:

$ pip3 install scipy
Otherwise install it by:
$ pip install scipy

Answer 4

if you are using pycharm go to settings and in project interpreter sub-tab click on "+" sign next to list and in the search bar in there search name "scipy" and install the package.

Answer 5

This may be too basic (and perhaps assumable), but -

Fedora users can use:

sudo dnf install python-scipy

and then (For python3.x):

pip3 install scipy

or (For python2.7):

pip2 install scipy

Answer 6

I recommend you to remove scipy via

apt-get purge scipy

and then to install it by

pip install scipy

If you do both then you might confuse you deb package manager due to possibly differing versions.