How to import matplotlib??

Hi,

I am trying to use a Python script in Visual Scripting. Script works fine on my IDE (PyCharm & Python 3.9). But when I paste it in "PythonScript", this error is raised

 "Errors

  • ModuleNotFoundError: No module named 'matplotlib'"

 

Numpy seems to works fine. 

My imports : 

import numpy as np
import matplotlib.figure as figure
from matplotlib.backends.backend_agg import FigureCanvasAgg as FigureCanvas
from mpl_toolkits.mplot3d import Axes3D