I already have a client-server program running in Python. I need help implementing these 3 functions in python 3 (use the pickle library if possible). NEED HELP PLEASE.

1. register . This command registers the process with name contact-name, and adds it, along with its IP-address and port, in the database. A return code of SUCCESS indicates the named contact is registered successfully. A return code of FAILURE indicates failure to register the named contact, e.g., the named contact already exists, or the number of contacts the application supports is exceeded. 2. create . This command initializes a contact list at the server with the name contact-list-name with zero contacts. A return code of SUCCESS indicates the contact list is created successfully at the server. A return code of FAILURE indicates failure to create the contact list, e.g., due to the list name already in use, or the number of lists the application supports is exceeded. 3. query-lists. This command queries the server for the names of the contact lists. It returns a return code equal to the number of contact lists, and a list of their names. If no contact lists exist, the return code is set to zero and the list is empty. 1. register . This command registers the process with name contact-name, and adds it, along with its IP-address and port, in the database. A return code of SUCCESS indicates the named contact is registered successfully. A return code of FAILURE indicates failure to register the named contact, e.g., the named contact already exists, or the number of contacts the application supports is exceeded. 2. create . This command initializes a contact list at the server with the name contact-list-name with zero contacts. A return code of SUCCESS indicates the contact list is created successfully at the server. A return code of FAILURE indicates failure to create the contact list, e.g., due to the list name already in use, or the number of lists the application supports is exceeded. 3. query-lists. This command queries the server for the names of the contact lists. It returns a return code equal to the number of contact lists, and a list of their names. If no contact lists exist, the return code is set to zero and the list is empty