SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UX

D:\code\draw_path\venv\Scripts\python.exe D:/code/draw_path/dispaly_pic/draw_pic_2.py
  File "D:/code/draw_path/dispaly_pic/draw_pic_2.py", line 9
    plt.savefig("C:\Users\octopus\Desktop\html")
               ^
SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape

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python出现报错问题：应该是转义字符有错，在前面加上r代表原来意思就没有出现这种错误了。

# encoding='utf-8'
import matplotlib.pyplot as plt
import numpy as np
x=np.arange(0,10,0.2)
y=np.sin(x)

fig,ax=plt.subplots()
ax.plot(x,y)
plt.savefig("C:\Users\octopus\Desktop\html")
plt.show()

应该改为：

# encoding='utf-8'
import matplotlib.pyplot as plt
import numpy as np
x=np.arange(0,10,0.2)
y=np.sin(x)

fig,ax=plt.subplots()
ax.plot(x,y)
plt.savefig(r"C:\Users\octopus\Desktop\html")
plt.show()