Python 和 Windows 10 未释放文件句柄

Question

我最近升级到 Windows 10，现在我看到一些 python 代码问题。 这是一个简单的程序，它遇到了 Win10 没有关闭或释放句柄的问题。

with open('sample_data.txt','r') as f:
    for line in f:
        print(line)

和我看到的错误。

PS D:\Python>  ${env:DEBUGPY_LAUNCHER_PORT}='50194'; & 'C:\Users\yyy\AppData\Local\Programs\Python\Python37\python.exe' 'c:\Users\yyy\.vscode\extensions\ms-python.python-2020.3.71659\pythonFiles\lib\python\debugpy\wheels\debugpy\launcher' 'd:\Python\Projects\Delimiter\delimiter_parser.py' 
Traceback (most recent call last):
  File "C:\Users\yyy\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "C:\Users\yyy\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "c:\Users\yyy\.vscode\extensions\ms-python.python-2020.3.71659\pythonFiles\lib\python\debugpy\wheels\debugpy\launcher\__main__.py", line 86, in <module>
    main()
  File "c:\Users\yyy\.vscode\extensions\ms-python.python-2020.3.71659\pythonFiles\lib\python\debugpy\wheels\debugpy\launcher\__main__.py", line 42, in main
    launcher.connect(launcher_port)
  File "c:\Users\yyy\.vscode\extensions\ms-python.python-2020.3.71659\pythonFiles\lib\python\debugpy\wheels\debugpy\launcher/../..\debugpy\launcher\__init__.py", line 27, in connect
    sock.connect(("127.0.0.1", launcher_port))
ConnectionRefusedError: [WinError 10061] No connection could be made because the target machine actively refused it

现在事情是这样的，我第一次运行程序一切都很好，第二次运行它，随后它就出现了你在上面看到的错误。如果我等几分钟再试一次，一切都很好（第一次..）时间大概是10min左右？

比利时