<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def dcc_get(self, mask, host, port, filepath, filesize=None):
 """DCC GET a file from mask. filepath must be an absolute path with an existing directory. filesize is the expected file size."""

        return self.dcc.create(
            'get', mask, filepath=filepath, filesize=filesize,
            host=host, port=port).ready