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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def create_default_file(cls, data=None, mode=None):
 """Create a config file and override data if specified."""

        filepath = cls.get_default_filepath()
        if not filepath:
            return False

        filename = os.path.basename(filepath)
        config = read_file(get_data_path(), filename)

        # Find and replace data in default config
        data = data or {}
        for k, v in six.iteritems(data):
            v = v or ""
            config = re.sub(
                r"^(%(key)s) =[ ]*$" % {"key": k},
                "%(key)s = %(value)s" % {"key": k, "value": v},
                config,
                flags=re.MULTILINE,
            )

        dirpath = os.path.dirname(filepath)
        if not os.path.exists(dirpath):
            os.makedirs(dirpath)
        with click.open_file(filepath, "w+") as f:
            f.write(config)

        if mode is not None:
            os.chmod(filepath, mode)

        return True