python matplotlib RuntimeWarning: Glyph xxxxx missing from current font. Font setting problem

D:\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py:180: RuntimeWarning: Glyph 26041 missing from current font.
  font.set_text(s, 0, flags=flags)
D:\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py:180: RuntimeWarning: Glyph 31243 missing from current font.
  font.set_text(s, 0, flags=flags)
D:\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py:180: RuntimeWarning: Glyph 22270 missing from current font.
  font.set_text(s, 0, flags=flags)
D:\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py:180: RuntimeWarning: Glyph 20687 missing from current font.
  font.set_text(s, 0, flags=flags)

This is an error message, you only need to complete the following code (which one is missing)

from matplotlib import font_manager as fm, rcParams
import matplotlib as plt

plt.rcParams['font.sans-serif']=['SimHei'] #Show Chinese label
plt.rcParams['axes.unicode_minus']=False   #These two lines need to be set manually

Then it will be displayed normally

The first drawing job with python ^ _ ^

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