server_address The address on which the server is listening. The format of addresses varies depending on the protocol family;

FTP_TLS.prot_p() Set up secure data connection.

exception ftplib.error_reply Exception raised when an unexpected reply is received from the server.

NNTP.nntp_implementation A string describing the software name and version of the NNTP server, or

HTTPResponse.status Status code returned by server.

HTTPResponse.readinto(b) Reads up to the next len(b) bytes of the response body into the buffer b. Returns the number

exception smtplib.SMTPResponseException Base class for all exceptions that include an SMTP error code. These exceptions are

smtp_state Holds the current state of the channel. This will be either COMMAND initially and then DATA

sys_version Contains the Python system version, in a form usable by the version_string method and the server_version

send_error(code, message=None, explain=None) Sends and logs a complete error reply to the client. The numeric code