I'm very new to this and I don't know how to fix the problem. I have a Dealer and then it asks in the beginning how many players will be playing. Then each player as well as a Dealer get assigned 2 cards from a deck. The problem is that for example if I have 3 players the code lists the previous 2 cards from one player in the next as well.

You probably want a list per player. A dictionary will probably do the work, something like:

hands = {}
...
for player in players:hand = hands[player] = []for j in range(2):c = deck.pop()hand.append(c)for player in players:print('{}: {}'.format(player, ', '.join(hands[player])))