您需要将输入的每个玩家名称添加到列表中。下面是您在代码中需要的起点：

from random import choice

number_of_players = int(input("How many players are there: "))
players = []

for _ in range(number_of_players):
    players.append(input("name the players: "))

print(choice(players))

问题在于，在每次for循环迭代中，你都要将ask_player变量重新分配给一个字符串。当你将一个字符串传递给random.choice（...）时，它会从该字符串中随机选取一个字母（因为字符串可以像数组一样被索引）。只需在循环前定义一个数组，并在每次迭代时追加：

import random

player_numberCount = input("How many players are there: ")
player_number = int(player_numberCount)

players = []
for i in range(player_number):
    players.append(input(f"name player {i + 1}: "))

print(random.choice(players))

该循环在每次迭代时重新分配ask_player变量，擦除先前的值。
您可能希望将每个值保存在一个列表中：

players = []
for i in range(player_number):
    players.append(input("Player name: "))

print(random.choice(players))