For POSIX systems, this class provides a suitable implementation of __File__ which wraps the native file descriptor and provides it if necessary.
For对于 POSIX systems, this class provides a suitable implementation of __File__ which wraps the native file descriptor and provides it if necessary.系统，该类提供合适的 __File__ 实现，它封装原生文件描述符，并在必要时提供该描述符。
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For对于 POSIXsystems, this class provides a suitable implementation of __File__ which wraps the native file descriptor and provides it if necessary.系统，该类提供合适的 __File__ 实现，它封装原生文件描述符，并在必要时提供该描述符。