ftplib.py 文件源码

def __init__(self, host='', user='', passwd='', acct='', keyfile=None,
                     certfile=None, context=None,
                     timeout=_GLOBAL_DEFAULT_TIMEOUT, source_address=None):
            if context is not None and keyfile is not None:
                raise ValueError("context and keyfile arguments are mutually "
                                 "exclusive")
            if context is not None and certfile is not None:
                raise ValueError("context and certfile arguments are mutually "
                                 "exclusive")
            self.keyfile = keyfile
            self.certfile = certfile
            if context is None:
                context = ssl._create_stdlib_context(self.ssl_version,
                                                     certfile=certfile,
                                                     keyfile=keyfile)
            self.context = context
            self._prot_p = False
            FTP.__init__(self, host, user, passwd, acct, timeout, source_address)