Team Chooser Challenge

[kanchiongspider]

Hi I am new to python and am stuff with this assignment. i have created a team chooser code and, the challenge is to : Can you improve your program to split players into 3 teams instead of 2?
I have added another team but the syntax error state that the list is empty.
Please help!

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#how to add in another team ?

from random import choice

players = []
file = open("players.txt","r")
# Read the list from the file and add to your PLAYERS list.
# The SPLITLINES code means that every line in the file is a new item in the PLAYERS list
players = file.read().splitlines()
print(players)

# create a list of team names from a file
team_names = []
file = open("team_names.txt", "r")
team_names = file.read().splitlines()
print(team_names)

#create empty team lists
teamA = []
teamB = []
# creatng another team 
teamC = []


# loop until there is no players left
while len(players) > 0 :
playerA = choice(players)
print (playerA)
teamA.append(playerA)
players.remove(playerA)
print("Players left : " , players)

playerB = choice(players)
print (playerB)
teamB.append(playerB)
players.remove(playerB)
print("Players left : " , players)
# new team 
playerC = choice(players)
print (playerC)
teamC.append(playerC)
players.remove(playerC)
print("Players left : " , players)

# you can tell your program to BREAK out of your WHILE loop if your PLAYERS list is empty
if players == [] :
break

# choose random teams names for the 2 teams
team_nameA = choice(team_names)
team_names.remove(team_nameA)
team_nameB = choice(team_names)
team_names.remove(team_nameB)
# new team
team_nameC = choice(team_names)
team_names.remove(team_nameC)

print ("Here are your teams : ")
print (team_nameA , ":" , teamA)
print (team_nameB , ":" , teamB)
print (team_nameC , ":" , teamC)

Error:
    playerC = choice(players)
  File "/Users/travis/build/mu-editor/mu_portable_python_macos/python/lib/python3.6/random.py", line 258, in choice
IndexError: Cannot choose from an empty sequence

Output:
['Harry', 'Hermione', 'Neville', 'Ginny', 'Freeman', 'Shelly', 'Isaac', 'jeanne']
['Kuala Lumpur', 'Selangor', 'Johor', 'Kedah', 'Perak', 'Tenrengano', 'Penang', 'Ipoh']
Harry
Players left :  ['Hermione', 'Neville', 'Ginny', 'Freeman', 'Shelly', 'Isaac', 'jeanne']
Shelly
Players left :  ['Hermione', 'Neville', 'Ginny', 'Freeman', 'Isaac', 'jeanne']
Neville
Players left :  ['Hermione', 'Ginny', 'Freeman', 'Isaac', 'jeanne']
Isaac
Players left :  ['Hermione', 'Ginny', 'Freeman', 'jeanne']
jeanne
Players left :  ['Hermione', 'Ginny', 'Freeman']
Freeman
Players left :  ['Hermione', 'Ginny']
Ginny
Players left :  ['Hermione']
Hermione
Players left :  []