in_place.py 文件源码

def force_rename(oldpath, newpath):
    """
    Move the file at ``oldpath`` to ``newpath``, deleting ``newpath``
    beforehand if necessary
    """
    if hasattr(os, 'replace'):  # Python 3.3+
        os.replace(oldpath, newpath)
    else:
        if sys.platform.startswith('win'):
            try_unlink(newpath)
        os.rename(oldpath, newpath)