__init__.py 文件源码

def get_system_username():
    """
    Try to determine the current system user's username.

    :returns: The username as a unicode string, or an empty string if the
        username could not be determined.
    """
    try:
        result = getpass.getuser()
    except (ImportError, KeyError):
        # KeyError will be raised by os.getpwuid() (called by getuser())
        # if there is no corresponding entry in the /etc/passwd file
        # (a very restricted chroot environment, for example).
        return ''
    if six.PY2:
        try:
            result = result.decode(DEFAULT_LOCALE_ENCODING)
        except UnicodeDecodeError:
            # UnicodeDecodeError - preventive treatment for non-latin Windows.
            return ''
    return result