Python 3骰子模擬問題

Question

我是嶄新的python，因爲我的新學校需要它。我習慣於C++，所以我仍然在學習繩索。我試圖做一個骰子滾動模擬器，我以爲我做的一切正確，但我的代碼不會工作。任何提示或指導，以幫助我學習將不勝感激。這裏是我的代碼：

import random 

def roll(sides=6): 
    num_rolled = random.randint(l,sides) 
    return num_rolled 

def main(): 
    sides = 6 
    rolling = True 
    while rolling: 
     roll_again = input("Ready to roll? ENTER=Roll. Q=Quit. ") 
    if roll_again.lower() != "q": 
     num_rolled = roll(sides) 
     print("You rolled a", num_rolled) 
    else: 
     rolling = False 

    print("Thanks for playing!") 

main() 

這是我的錯誤：

Traceback (most recent call last): File "C:\Users\nomor\AppData\Local\Programs\Python\Python35-32\DiceRollingSim.py", line 20, in main() File "C:\Users\nomor\AppData\Local\Programs\Python\Python35-32\DiceRollingSim.py", line 13, in main num_rolled = roll(sides) File "C:\Users\nomor\AppData\Local\Programs\Python\Python35-32\DiceRollingSim.py", line 4, in roll num_rolled = random.randint(l,sides) NameError: name 'l' is not defined

Answer 1

對於第一個問題...

num_rolled = random.randint(l,sides) 

l != 1。你把一個「l」而不是數字1. Python認爲這是一個你沒有定義的變量 - >你得到的錯誤。

從documentation randint需要兩個整數作爲參數：

random.randint(a, b) Return a random integer N such that a <= N <= b. Alias for randrange(a, b+1).

接下來，看看在你的這幾行代碼。

while rolling: 
    roll_again = input("Ready to roll? ENTER=Roll. Q=Quit. ") 
if roll_again.lower() != "q": 
    num_rolled = roll(sides) 
    print("You rolled a", num_rolled) 
else: 
    rolling = False 

的if-else部分需要while循環的內部縮進：

while rolling: 
    roll_again = input("Ready to roll? ENTER=Roll. Q=Quit. ") 
    if roll_again.lower() != "q": 
     num_rolled = roll(sides) 
     print("You rolled a", num_rolled) 
    else: 
     rolling = False