How to search and display name of a list in python?

Your question is not clear. But are you trying to do something as follows:

playlists = {'playlist1': ["1", "2", "3"], 'playlist2': ["4", "5", "6"], 
                                      'playlist3': ["7", "8", "9"]}
search = input("Whats the name?")
if search in playlists.keys():
    print(playlists[search])
else:
    print("Wrong")

If the user gives input as playlist2, the program will print [4, 5, 6].