函数调用加不加括号的区别

[andriywh]

DAY9的案例2:发牌游戏

def main(): p = Poker() p.shuffle() players = [Player('东邪'), Player('西毒'), Player('南帝'), Player('北丐')] for _ in range(13): for player in players: player.get(p.next) for player in players: print(player.name + ':', end=' ') player.arrange(get_key) print(player.cards_on_hand)

为什么get_key函数调用时不用加括号？

[Satday]

是否是因为这里的get_key作为参数传入，而不是正常调用该函数？

357897077@qq.com

发件人： andriywh 发送时间： 2019-11-28 13:47 收件人： jackfrued/Python-100-Days 抄送： Subscribed 主题： [jackfrued/Python-100-Days] 函数调用加不加括号的区别 (#382) DAY9的案例2:发牌游戏 def main(): p = Poker() p.shuffle() players = [Player('东邪'), Player('西毒'), Player('南帝'), Player('北丐')] for _ in range(13): for player in players: player.get(p.next) for player in players: print(player.name + ':', end=' ') player.arrange(get_key) print(player.cards_on_hand) 为什么get_key函数调用时不用加括号？ — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

[andriywh]

是否是因为这里的getkey作为参数传入，而不是正常调用该函数？ 357897077@qq.com 发件人： andriywh 发送时间： 2019-11-28 13:47 收件人： jackfrued/Python-100-Days 抄送： Subscribed 主题： [jackfrued/Python-100-Days] 函数调用加不加括号的区别 (#382) DAY9的案例2:发牌游戏 def main(): p = Poker() p.shuffle() players = [Player('东邪'), Player('西毒'), Player('南帝'), Player('北丐')] for in range(13): for player in players: player.get(p.next) for player in players: print(player.name + ':', end=' ') player.arrange(get_key) print(player.cards_on_hand) 为什么get_key函数调用时不用加括号？ — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

请问能详细说一下 函数作为参数传入的机制吗？

[CrookedNeck]

是否是因为这里的getkey作为参数传入，而不是正常调用该函数？ 357897077@qq.com 发件人： andriywh 发送时间： 2019-11-28 13:47 收件人： jackfrued/Python-100-Days 抄送： Subscribed 主题： [jackfrued/Python-100-Days] 函数调用加不加括号的区别 (#382) DAY9的案例2:发牌游戏 def main(): p = Poker() p.shuffle() players = [Player('东邪'), Player('西毒'), Player('南帝'), Player('北丐')] for in range(13): for player in players: player.get(p.next) for player in players: print(player.name + ':', end=' ') player.arrange(get_key) print(player.cards_on_hand) 为什么get_key函数调用时不用加括号？ — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

请问能详细说一下 函数作为参数传入的机制吗？

对于 sort 排序方法，传递给key参数的是一个形参函数，它指定可迭代对象中的每一个元素来按照该函数进行排序，作为形参函数调用，并不需要去加括号（即传递的是 get_key 函数本身，return 的两个参数作为对该数组的排序依据）