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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:

async def execute(self, keys=[], args=[], client=None):
        "Execute the script, passing any required ``args``"
        if client is None:
            client = self.registered_client
        args = tuple(keys) + tuple(args)
        # make sure the Redis server knows about the script
        if isinstance(client, BasePipeline):
            # make sure this script is good to go on pipeline
            client.scripts.add(self)
        try:
            return await client.evalsha(self.sha, len(keys), *args)
        except NoScriptError:
            # Maybe the client is pointed to a differnet server than the client
            # that created this instance?
            # Overwrite the sha just in case there was a discrepancy.
            self.sha = await client.script_load(self.script)
            return await client.evalsha(self.sha, len(keys), *args)