Shuffle and Pop

# Select teams by using shuffle
from random import shuffle

teamA = []
teamB = []    # Create two empty lists for teams A and B

players = ['Harry', 'Hermione', 'Neville', 'Ginny', 'Mick', 'Sheree']

# Function to add players to teams
def add_player_to_team(team):
    player_picked = players.pop()
    team.append(player_picked)

# count the players available
num_of_players = sum(1 for num_of_players in players)

# Test we have an even number of players
if num_of_players % 2 != 0:
    # Odd number of players so can' pick teams
    print("Can't pick teams as odd number of players !")
elif num_of_players == 0:
    print("No players to select from !")
else:
    # Shuffle the list of players
    shuffle(players)
    # Now repeatedly add a player to each team
    for player in range(0, num_of_players, 2):
        add_player_to_team(teamA)
        add_player_to_team(teamB)
    print(teamA)
    print(teamB)