[Unable to display Chinese characters when plt draws under Mac OS]

Under Mac OS, plt drawing Chinese cannot display the problem

Problem Description

• When using pycharm for plt drawing, the title and some attributes contain Chinese, and the result is displayed as a box, as shown in the figure below

Solution

• I found a lot of methods on the Internet, and it took a long time. I found that it is not necessary to install various fonts or to change the configuration, and the download of fonts is very troublesome. The common methods are as follows

Solution 1

• Use the following code, the format isu'中文'

  import numpy as np
  import matplotlib.pyplot as plt
  plt.rcParams['font.sans-serif'] = ['SimHei']
  # plt.rc('font', family='SimHei', size=13)
  

  I can implement the above method under the win10 system, but it still doesn't work under the Mac os.

Solution 2

• I accidentally found that a big guy shared an interesting method. You can first check the Chinese fonts that come with python, and enter the following code to view:

  from matplotlib.font_manager import FontManager
  fm = FontManager()
  mat_fonts = set(f.name for f in fm.ttflist)
  print (mat_fonts)
  

  As shown in the figure below, the system comes with many fonts
  

• So just putting the following code at the beginning of your script will solve the problem

  import numpy as np
  import matplotlib.pyplot as plt
  plt.rcParams['font.sans-serif'] = ['Arial Unicode MS']
  

• The effect is as follows: