为什么普通print语句正常运行，f-string版本却出现语法错误？

• f-string引号冲突：你定义f-string时外层用了双引号"，内部访问字典键时也用了双引号，Python会把内部的第一个"识别为f-string的结束标记，直接触发语法错误。只要保证f-string外层引号和内部字符串的引号不同即可，比如外层用双引号、内层用单引号。
• 循环内覆盖牌堆变量：全局定义的cards是整副牌的牌堆，你在for循环中把发牌结果也命名为cards，第一次循环执行后原牌堆就被覆盖为只有2张牌的列表，后续给庄家发牌的逻辑会完全错误，需要修改循环内的临时变量名。

import random

cards = [11, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 10, 10]

players = ["player", "dealer"]

players_hands = {}
players_scores = {}


for player in players:
    # 修改临时变量名，避免覆盖全局牌堆
    hand_cards = random.choices(cards, k = 2)
    players_hands[player] = hand_cards
    players_scores[player] = sum(hand_cards)
    
print(players_hands["player"])

print(players_scores["player"])
# 内层字符串改用单引号，避免和外层f-string的双引号冲突
print(f"Your cards: {players_hands['player']}, current score: {players_scores['player']}")

print(f"Dealer's first card: {players_hands['dealer'][0]}")

内容的提问来源于stack exchange，提问作者a_for_alice