Python3.5 ImportError: libpython3.5m.so.1.0: cannot open shared object file: No such file or directory

Question

I am using Ubuntu 14.04 LTS, 64-bit. I downloaded Python3.5.1 Gzipped tarball source from https://www.python.org/downloads/release/python-351/ .

Then installed using

./configure
sudo make install

Then I upgrade pip by

sudo pip install --upgrade pip

it upgraded pip to 8.1.2, which is the latest version. Then installed matplotlib package using

sudo pip install --upgrade matplotlib

Now, when I import matplotlib into python, I get

Python 3.5.1 (default, Jun  9 2016, 14:37:08) 
[GCC 4.8.4] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import matplotlib.pyplot
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.5/site-packages/matplotlib/pyplot.py", line 29, in <module>
import matplotlib.colorbar
File "/usr/local/lib/python3.5/site-packages/matplotlib/colorbar.py", line 32, in <module>
import matplotlib.artist as martist
File "/usr/local/lib/python3.5/site-packages/matplotlib/artist.py", line 14, in <module>
from .transforms import (Bbox, IdentityTransform, TransformedBbox,
File "/usr/local/lib/python3.5/site-packages/matplotlib/transforms.py", line 39, in <module>
from matplotlib._path import (affine_transform, count_bboxes_overlapping_bbox,
ImportError: libpython3.5m.so.1.0: cannot open shared object file: No such file or directory

Please advise on how to fix this?

Thank you.

Answer 1

Most people installed matlibplot through Anaconda or Canopy instead of installing it as an individual module. Usually if you have an error from _path , it means something wrong with your installation or compilation. _path is related to compiled c extentions. You can read theinstallation page of matlibplot . But the easiest way to fix it is to install Anaconda and you won't worry about a lot of things. Good luck!

Answer 2

I ran into a similar issue. It's because my libpython binaries were installed to /usr/local/lib/ and the program was looking for libpython under /usr/lib/. Making a symbolic link in /usr/lib/ solved the problem:

sudo ln -s /usr/local/lib/libpython3.8.so.1.0 /usr/lib/libpython3.8.so.1.0

or, in your case,

sudo ln -s /usr/local/lib/libpython3.5m.so.1.0 /usr/lib/libpython3.5m.so.1.0