Here's the full code [Correct One]

class players:
def __init__(self):
    self.name = 'placeholder'
    self.squad = []

teams = []
teams.append(players())
teams.append(players())
teams[0].name = "abc"
teams[1].name = "xyz"
teams[0].squad.append("Joe")

for w in teams:
    print(w.name)
    print(w.squad)