Could not import the lzma module

运行Python程序，出现警告

UserWarning: Could not import the lzma module. Your installed Python is incomplete. 
Attempting to use lzma compression will result in a RuntimeError.
warnings.warn(msg)

打开警告，将warnings注释掉，就不会每次出现警告了

def _import_lzma():
    """
    Importing the `lzma` module.

    Warns
    -----
    When the `lzma` module is not available.
    """
    try:
        import lzma

        return lzma
    except ImportError:
        msg = (
            "Could not import the lzma module. "
            "Your installed Python is incomplete. "
            "Attempting to use lzma compression will result in a RuntimeError."
        )
        # warnings.warn(msg)