问题描述:
运行一段程序的时候会提示:
Traceback (most recent call last):
File "sigmoid.py", line 3, in
import matplotlib.pylab as plt
File "D:\software\python\python37\lib\site-packages\matplotlib\__init__.py", line 205, in
_check_versions()
File "D:\software\python\python37\lib\site-packages\matplotlib
1