context.py 文件源码

def __init__(self, **kwargs):
        """
        Use keyword arguments to overwrite
        any of the class attributes for this instance.

        """
        assert all(hasattr(type(self), attr) for attr in kwargs.keys())
        self.__dict__.update(**kwargs)

        # Keyword arguments > stream.encoding > default utf8
        if self.stdin_encoding is None:
            self.stdin_encoding = getattr(
                self.stdin, 'encoding', None) or 'utf8'
        if self.stdout_encoding is None:
            actual_stdout = self.stdout
            if is_windows:
                # noinspection PyUnresolvedReferences
                from colorama import AnsiToWin32
                if isinstance(self.stdout, AnsiToWin32):
                    actual_stdout = self.stdout.wrapped
            self.stdout_encoding = getattr(
                actual_stdout, 'encoding', None) or 'utf8'