Question:

  File "D:\Windows_DL_Environment\anaconda3\envs\py37\lib\site-packages\PIL\ImageFont.py", line 852, in freetype
    return FreeTypeFont(font, size, index, encoding, layout_engine)
  File "D:\Windows_DL_Environment\anaconda3\envs\py37\lib\site-packages\PIL\ImageFont.py", line 212, in __init__
    font, size, index, encoding, layout_engine=layout_engine
OSError: cannot open resource

This class is a common font problem. In Windows environment, fonts are generally located in the C:\windows\fonts folder. In this folder, users can check whether the font specified in the python program exists.

fnt = ImageFont.truetype('Pillow/Tests/fonts/FreeMono.ttf', 50)

Solution 1:

Change the font that exists on the computer

ImageFont.truetype("Pillow/Tests/fonts/arial.ttf", 50)

Solution 2:

Found no freemono in the computer Ttf font, so you need to download
https://fontmeme.com/ziti/freemono-font/

After downloading, unzip it into the fonts folder

finally. Restart the computer to execute.