使用pip重新安装软件包后找不到Matplotlib模块

如何解决使用pip重新安装软件包后找不到Matplotlib模块

import matplotlib.pyplot as plt

class Circle(object):

    def __init__(self,radius = 3,color = 'blue'):
        self.radius = radius
        self.color = color

    def add_radius(self,r):
        self.radius = self.radius + r
        return(self.radius)

    def drawCircle(self):
        plt.gca().add_patch(plt.Circle((0,0),radius = self.radius,fc = self.color))
        plt.axis('scaled')
        plt.show()

RedCircle = Circle(10,'red')
RedCircle.drawCircle()

我已经安装了matplotlib并重新安装了pip，但仍然出现相同的错误。 我收到此错误...

Traceback (most recent call last):
  File "c:/Users/Burke Morse/Documents/Python/python_basics/module_3/objects_classes.py",line 1,in <module>
    import matplotlib.pyplot as plt
ModuleNotFoundError: No module named 'matplotlib'