matplotlib not working in Pycharm 4.5.3

Question

I'm trying to run a simple code in Pycharm Community Edition 4.5.3 to display a graph with some points using matplotlib

import matplotlib.pyplot as plt

plt.plot([5,4,4,4,6,6,7,7,8,8,9,10,10,10,10,11,11,12,12,13],
[5,7,10,13,8,14,7,11,5,13,9,4,6,12,14,8,10,6,13,8], 'ro')

plt.plot([6,7],[8,7],'bo-')
plt.axis([0, 15, 0, 15])
plt.show()

Although matplotlib is installed properly Pycharm is not recognizing it. I'm getting this error message on running the above code in Pycharm

ImportError: No module named 'matplotlib'

Answer 1

it seems like you have installed python more than one and matplotlib library installed with python that currently not used by Pycharm by default. so in your python script add #!/usr/bin/env python or full path of python interpreter that has matplotlib.

if you are using python installed by system by default then use python-matplotlib if you install python3-matplotlib then it will create problem or vise versa . in this situation you have to mention full path of python interpreter that you want to use .

i just installed only python-matplotlib using

sudo apt-get install python-matplotlib

and able to run code using

python test.py

Answer 2

Install the package python-matplotlib

sudo apt-get install python-matplotlib

or for Python3

sudo apt-get install python3-matplotlib

Answer 3

I think your problem like mine. I tested import matplotlib in python shell, it is OK. But shows error in Pycharm. This is because Pycharm don't know the path of site-packages.

1. You should add path of site-packages (for me C:\Program Files\Python 3.5\lib\site-packages) to PATH or

2. In your code add these

   import sys    
   sys.path.append(r"C:\Program Files\Python 3.5\lib\site-packages")
   import matplotlib.pyplot as plt
   

I think it will help you :)