anaconda 无法导入 matplotlib.pyplot

Question

I am getting this error when I am trying to import "matplotlib.pyplot". I cant even install matplotlib.pyplot through conda install.

It shows this:

import matplotlib.pyplot Traceback (most recent call last): File "", line 1, in ModuleNotFoundError: No module named 'matplotlib.pyplot'

Answer 1

It could be that it's running your default Python installation instead of the one installed with Anaconda. Try prepending this to the top of your script:

#!/usr/bin/env python

If that does not work, try installing matplotlib with pip , then try again:

pip install matplotlib

Let me know if that works for you.

Answer 2

As reported here , when you use Anaconda, install the packet using conda. In this case, the right instruction to use (on Ubuntu 18.04) is:

conda install -c conda-forge matplotlib

This will solve the problem.

If you use pip (you can), you will mess up all the dependencies (and for instance, the probability that other scripts/programs do not work anymore is not null: if you use Spyder , you will have big dependencies problem to face).

Optional :

In order to always avoid problem like this, I recommend you to use Virtual Enviroment :

Whats is it?

Geeksforgeeks explains it clearly.

How?

A step-by-step guide is always useful.

Answer 3

Just open anaconda prompt and use either of the below command to install the package. This solved my issue.

1. conda install -c plotly chart-studio

or

2. conda install -c plotly/label/test chart-studio

Answer 4

I had the same issue for days, just solved it by adding "%matplotlib inline" on top of "import matplotlib.pyplot as plt"

So enter this to import mathplotlib.pylot:

%matplotlib inline
import matplotlib.pyplot as plt

Answer 5

Make sure Matplotlib is accessed in the Same Conda Environment as it was installed .
In the case below, Matplotlib was installed in pytorch environment and not the base environment .
Hence when run in the pytorch environment it gets imported , but doesn't get imported in base environment .

TERMINAL

#Installation  
(pytorch) F:\Script\Ai\Pytorch>conda install -c conda-forge matplotlib 

#Check installation  in pytorch Environment  
(pytorch) F:\Script\Ai\Pytorch>python  
>>> import matplotlib
>>> print('matplotlib: {}'.format(matplotlib.__version__))
matplotlib: 3.3.4  


#Import Error in base Environment
(base) F:\Script\Ai\Pytorch>python
>>> import matplotlib
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'matplotlib'

Answer 6

Switch to the correct environment before installing.

conda activate environment_name_here
conda install matplotlib

In my case, I had an environment for a jupyter notebook, but installed in initially in a new terminal window which defaulted to the base environment.

Answer 7

Check if the ...../python3.x/site-packages is listed within sys.path . If not append it with sys.path.append('.....python3.8/site-packages')