无法将 Matplotlib 与 Raspberry PI4 一起使用

Question

I am trying to use Python on my PI4. I have a very simple program:

import numpy as np
import matplotlib.pyplot as plt
x = np.array([1, 3, 4, 6])
y = np.array([2, 3, 5, 1])
plt.plot(x,y)
plt.show()

I have install matplotlib with:

sudo apt install python3-matplotlib

I use IDLE shell 3.9.2 and I have the following error:

RuntimeError: module compiled against API version 0xf but this version of numpy is 0xd
Traceback (most recent call last):
  File "/home/pi/Python/Test01.py", line 2, in <module>
    import matplotlib.pyplot as plt
  File "/usr/local/lib/python3.9/dist-packages/matplotlib/__init__.py", line 109, in <module>
    from . import _api, _version, cbook, docstring, rcsetup
  File "/usr/local/lib/python3.9/dist-packages/matplotlib/rcsetup.py", line 27, in <module>
    from matplotlib.colors import Colormap, is_color_like
  File "/usr/local/lib/python3.9/dist-packages/matplotlib/colors.py", line 56, in <module>
    from matplotlib import _api, cbook, scale
  File "/usr/local/lib/python3.9/dist-packages/matplotlib/scale.py", line 23, in <module>
    from matplotlib.ticker import (
  File "/usr/local/lib/python3.9/dist-packages/matplotlib/ticker.py", line 136, in <module>
    from matplotlib import transforms as mtransforms
  File "/usr/local/lib/python3.9/dist-packages/matplotlib/transforms.py", line 46, in <module>
    from matplotlib._path import (
ImportError: numpy.core.multiarray failed to import

I can't solve that!!

Answer 1

I had this exact same issue but finally figured out a solution: Here's what I did:

1. Type the following in the terminal:

    sudo apt update sudo apt remove python3-numpy sudo apt install libatlas3-base

   In removing numpy, other files and directories will also be removed, including matplotlib.

2. If using Thonny IDE, select 'Tools' -> 'Manage packages...'

3. In the search bar of the new window, type numpy , then click 'Search on PyPI'

4. Click on the first search result to install!