Mac Pycharm在Debug模式报编码（SyntaxError）错误 python3.9/tokenize.py", line 330, in find_cookie

最近更换macos系统后，发现在pycharm中debug运行项目就会出现python3.9/tokenize.py", line 330, in find_cookie错误，直接run可以正常运行。

错误信息

Traceback (most recent call last):
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/tokenize.py", line 330, in find_cookie
    line_string = line.decode('utf-8')
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xca in position 0: invalid continuation byte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/tokenize.py", line 394, in open
    encoding, lines = detect_encoding(buffer.readline)
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/tokenize.py", line 371, in detect_encoding
    encoding = find_cookie(first)
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/tokenize.py", line 335, in find_cookie
    raise SyntaxError(msg)
SyntaxError: invalid or missing encoding declaration for '/Users/willow/WorkSpaces/PycharmProjects/panda-hub/venv/bin/Python'

解决方案

原因复盘

去掉的这个：Attach to subprocess automatically while debugging 官方解释： If this checkbox is selected, PyCharm will automatically attach all subprocesses of the process being debugged. Thus, if the parent process has subprocesses, their breakpoints will always work. 中文：如果选中此复选框，PyCharm将自动附加正在调试的进程的所有子进程。因此，如果父进程有子进程，它们的断点将始终有效。简单来说就是这个编码错误是在运行子进程的时候解释代码导致的。