Python if 和 else 语句不是预期的输出
Python if and else statement not expected output
我正在尝试使用 python 3.9 进行动物测验。在其中一个问题上错了 3 次并没有像它应该的那样开始一个新问题。相反，它只是空白。在这个人的第一次和第二次尝试中，一切都很顺利。任何和所有的帮助表示赞赏。这是我的代码：
def check_guess(guess, answer):
global score
global name
still_guessing = True
attempt = 0
while still_guessing and attempt < 3:
if guess == answer:
print('Correct wow, i expected worse from someone named %s' % name)
if attempt == 0:
score = score + 3
elif attempt == 1:
score = score + 2
elif attempt == 2:
score = score + 1
still_guessing = False
elif attempt <= 1:
print('HAAAAAAAAAAAAAAAAAAAAAAAAAAAA IMAGINE NOT GETTING THAT RIGHT!!!')
print('L bozo + ratio')
guess = input('Try again ')
attempt = attempt + 1
if attempt == 3:
print('the correct answer was %s' % answer)
print('There is always next time!!')
still_guessing = False
score = 0
print('Welcome to the animal quiz')
print()
print('In this game you will have to guess the animal')
name = input('What is your name? ')
print('Cool name, I feel like i heard of it before hmmm %s..' % name)
print()
print('Enough stalling onto the game!!!')
guess1 = input('Which bear lives in the north pole ')
check_guess(guess1.strip().lower(), 'polar bear')
你必须把 if attempt == 3 放在你的 while 循环里，因为 while 运行 无限循环直到猜测正确，所以当 attempt 的值为 3 时，它什么都不做，因为它仍在循环中，并且没有 if 语句告诉它一旦值为 3 就做什么。
编辑：还将循环条件更改为 still guessing and attempt <= 3
attempt = 0
def check_guess(guess, answer):
global score
global name
global attempt
still_guessing = True
while still_guessing and attempt <= 3:
print(f"attempt {attempt}")
if attempt == 2:
print('the correct answer was %s' % answer)
print('There is always next time!!')
still_guessing = False
else:
print('HAAAAAAAAAAAAAAAAAAAAAAAAAAAA IMAGINE NOT GETTING THAT RIGHT!!!')
print('L bozo + ratio')
guess = input('Try again ')
attempt = attempt + 1
if guess == answer:
print('Correct wow, i expected worse from someone named %s' % name)
if attempt == 0:
score = score + 3
elif attempt == 1:
score = score + 2
elif attempt == 2:
score = score + 1
still_guessing = False
我认为下面的 elif 应该计算 <= 2，而不是 1：
elif attempt <= 2:
但最后一条 'Try again' 消息仍然打印出来。您可以解决将尝试检查条件放在 'Try again' 消息之前的问题。如果条件评估为 True，则中断循环：
elif attempt <= 2:
print('HAAAAAAAAAAAAAAAAAAAAAAAAAAAA IMAGINE NOT GETTING THAT RIGHT!!!')
print('L bozo + ratio')
attempt = attempt + 1
if attempt > 2:
break
guess = input('Try again ')
请记住在这种情况下调整您的 While 条件，因为不再需要尝试检查。
如果可以的话，我对代码进行了一些重构，因此您可以查看实现相同目标的其他方法。
def check_guess(guess, answer, attempts):
global score
global name
while True:
if guess == answer:
print('Correct wow, i expected worse from someone named %s' % name)
score = [0, 1, 2, 3]
final_score = score[attempts]
print(f'Score: {final_score}')
break
attempts -= 1
if attempts == 0:
print('the correct answer was %s' % answer)
print('There is always next time!!')
break
print('HAAAAAAAAAAAAAAAAAAAAAAAAAAAA IMAGINE NOT GETTING THAT RIGHT!!!')
print('L bozo + ratio')
guess = input('Try again ')
score = 0
print('Welcome to the animal quiz')
print()
print('In this game you will have to guess the animal')
name = input('What is your name? ')
print('Cool name, I feel like i heard of it before hmmm %s..' % name)
print()
print('Enough stalling onto the game!!!')
guess1 = input('Which bear lives in the north pole ')
check_guess(guess1.strip().lower(), 'polar bear', attempts=3)
使用下面的代码对我有用。
def check_guess(guess, answer):
global score
global name
still_guessing = True
attempt = 0
while still_guessing and attempt < 3:
if guess == answer:
print('Correct wow, i expected worse from someone named %s' % name)
if attempt == 0:
score = score + 3
elif attempt == 1:
score = score + 2
elif attempt == 2:
score = score + 1
still_guessing = False
elif attempt <= 2:
print('HAAAAAAAAAAAAAAAAAAAAAAAAAAAA IMAGINE NOT GETTING THAT RIGHT!!!')
print('L bozo + ratio')
guess = input('Try again ')
attempt = attempt + 1
if attempt == 3:
print('the correct answer was %s' % answer)
print('There is always next time!!')
still_guessing = False
score = 0
print('Welcome to the animal quiz')
print()
print('In this game you will have to guess the animal')
name = input('What is your name? ')
print('Cool name, I feel like i heard of it before hmmm %s..' % name)
print()
print('Enough stalling onto the game!!!')
guess1 = input('Which bear lives in the north pole ')
check_guess(guess1.strip().lower(), 'polar bear')
我把1改成2了
在你的 while 循环中
'attempt'永远不会变成3，所以代码无法跳转到下一部分if attmpt == 3
所以在while循环中，elif条件应该是elif attempt <= 2:那么attempt = attempt + 1可以达到3
我发现了一些错误。
首先，您不需要 if attempt == 3 或 2 因为您使用的是 while 循环（while 循环首先基于条件）。
第二，最好结合“break”，不要死循环。
While 循环从 0 开始到 2 结束（取 3 个值）。
我为你重写了代码。
def check_guess(guess, answer):
global score
global name
still_guessing = True
attempt = 0
while still_guessing and attempt < 2:
if guess == answer:
print('Correct wow, i expected worse from someone named %s' % name)
if attempt == 0:
score = score + 3
elif attempt == 1:
score = score + 2
elif attempt == 2:
score = score + 1
still_guessing = False
elif attempt <= 1:
print('HAAAAAAAAAAAAAAAAAAAAAAAAAAAA IMAGINE NOT GETTING THAT RIGHT!!!')
print('L bozo + ratio')
guess = input('Try again ')
attempt = attempt + 1
break
print('the correct answer was %s' % answer)
print('There is always next time!!')
still_guessing = False
要测试代码，请添加 print("pass OK")
score = 0
print('Welcome to the animal quiz')
print()
print('In this game you will have to guess the animal')
name = input('What is your name? ')
print('Cool name, I feel like i heard of it before hmmm %s..' % name)
print()
print('Enough stalling onto the game!!!')
guess1 = input('Which bear lives in the north pole ')
check_guess(guess1.strip().lower(), 'polar bear')
print("pass OK")
别忘了投票 :)（斋月卡里姆！！！）
我正在尝试使用 python 3.9 进行动物测验。在其中一个问题上错了 3 次并没有像它应该的那样开始一个新问题。相反，它只是空白。在这个人的第一次和第二次尝试中，一切都很顺利。任何和所有的帮助表示赞赏。这是我的代码：
def check_guess(guess, answer):
global score
global name
still_guessing = True
attempt = 0
while still_guessing and attempt < 3:
if guess == answer:
print('Correct wow, i expected worse from someone named %s' % name)
if attempt == 0:
score = score + 3
elif attempt == 1:
score = score + 2
elif attempt == 2:
score = score + 1
still_guessing = False
elif attempt <= 1:
print('HAAAAAAAAAAAAAAAAAAAAAAAAAAAA IMAGINE NOT GETTING THAT RIGHT!!!')
print('L bozo + ratio')
guess = input('Try again ')
attempt = attempt + 1
if attempt == 3:
print('the correct answer was %s' % answer)
print('There is always next time!!')
still_guessing = False
score = 0
print('Welcome to the animal quiz')
print()
print('In this game you will have to guess the animal')
name = input('What is your name? ')
print('Cool name, I feel like i heard of it before hmmm %s..' % name)
print()
print('Enough stalling onto the game!!!')
guess1 = input('Which bear lives in the north pole ')
check_guess(guess1.strip().lower(), 'polar bear')
你必须把 if attempt == 3 放在你的 while 循环里，因为 while 运行 无限循环直到猜测正确，所以当 attempt 的值为 3 时，它什么都不做，因为它仍在循环中，并且没有 if 语句告诉它一旦值为 3 就做什么。
编辑：还将循环条件更改为 still guessing and attempt <= 3
attempt = 0
def check_guess(guess, answer):
global score
global name
global attempt
still_guessing = True
while still_guessing and attempt <= 3:
print(f"attempt {attempt}")
if attempt == 2:
print('the correct answer was %s' % answer)
print('There is always next time!!')
still_guessing = False
else:
print('HAAAAAAAAAAAAAAAAAAAAAAAAAAAA IMAGINE NOT GETTING THAT RIGHT!!!')
print('L bozo + ratio')
guess = input('Try again ')
attempt = attempt + 1
if guess == answer:
print('Correct wow, i expected worse from someone named %s' % name)
if attempt == 0:
score = score + 3
elif attempt == 1:
score = score + 2
elif attempt == 2:
score = score + 1
still_guessing = False
我认为下面的 elif 应该计算 <= 2，而不是 1：
elif attempt <= 2:
但最后一条 'Try again' 消息仍然打印出来。您可以解决将尝试检查条件放在 'Try again' 消息之前的问题。如果条件评估为 True，则中断循环：
elif attempt <= 2:
print('HAAAAAAAAAAAAAAAAAAAAAAAAAAAA IMAGINE NOT GETTING THAT RIGHT!!!')
print('L bozo + ratio')
attempt = attempt + 1
if attempt > 2:
break
guess = input('Try again ')
请记住在这种情况下调整您的 While 条件，因为不再需要尝试检查。
如果可以的话，我对代码进行了一些重构，因此您可以查看实现相同目标的其他方法。
def check_guess(guess, answer, attempts):
global score
global name
while True:
if guess == answer:
print('Correct wow, i expected worse from someone named %s' % name)
score = [0, 1, 2, 3]
final_score = score[attempts]
print(f'Score: {final_score}')
break
attempts -= 1
if attempts == 0:
print('the correct answer was %s' % answer)
print('There is always next time!!')
break
print('HAAAAAAAAAAAAAAAAAAAAAAAAAAAA IMAGINE NOT GETTING THAT RIGHT!!!')
print('L bozo + ratio')
guess = input('Try again ')
score = 0
print('Welcome to the animal quiz')
print()
print('In this game you will have to guess the animal')
name = input('What is your name? ')
print('Cool name, I feel like i heard of it before hmmm %s..' % name)
print()
print('Enough stalling onto the game!!!')
guess1 = input('Which bear lives in the north pole ')
check_guess(guess1.strip().lower(), 'polar bear', attempts=3)
使用下面的代码对我有用。
def check_guess(guess, answer):
global score
global name
still_guessing = True
attempt = 0
while still_guessing and attempt < 3:
if guess == answer:
print('Correct wow, i expected worse from someone named %s' % name)
if attempt == 0:
score = score + 3
elif attempt == 1:
score = score + 2
elif attempt == 2:
score = score + 1
still_guessing = False
elif attempt <= 2:
print('HAAAAAAAAAAAAAAAAAAAAAAAAAAAA IMAGINE NOT GETTING THAT RIGHT!!!')
print('L bozo + ratio')
guess = input('Try again ')
attempt = attempt + 1
if attempt == 3:
print('the correct answer was %s' % answer)
print('There is always next time!!')
still_guessing = False
score = 0
print('Welcome to the animal quiz')
print()
print('In this game you will have to guess the animal')
name = input('What is your name? ')
print('Cool name, I feel like i heard of it before hmmm %s..' % name)
print()
print('Enough stalling onto the game!!!')
guess1 = input('Which bear lives in the north pole ')
check_guess(guess1.strip().lower(), 'polar bear')
我把1改成2了
在你的 while 循环中
'attempt'永远不会变成3，所以代码无法跳转到下一部分if attmpt == 3
所以在while循环中，elif条件应该是elif attempt <= 2:那么attempt = attempt + 1可以达到3
我发现了一些错误。 首先，您不需要 if attempt == 3 或 2 因为您使用的是 while 循环（while 循环首先基于条件）。 第二，最好结合“break”，不要死循环。 While 循环从 0 开始到 2 结束（取 3 个值）。
我为你重写了代码。
def check_guess(guess, answer):
global score
global name
still_guessing = True
attempt = 0
while still_guessing and attempt < 2:
if guess == answer:
print('Correct wow, i expected worse from someone named %s' % name)
if attempt == 0:
score = score + 3
elif attempt == 1:
score = score + 2
elif attempt == 2:
score = score + 1
still_guessing = False
elif attempt <= 1:
print('HAAAAAAAAAAAAAAAAAAAAAAAAAAAA IMAGINE NOT GETTING THAT RIGHT!!!')
print('L bozo + ratio')
guess = input('Try again ')
attempt = attempt + 1
break
print('the correct answer was %s' % answer)
print('There is always next time!!')
still_guessing = False
要测试代码，请添加 print("pass OK")
score = 0
print('Welcome to the animal quiz')
print()
print('In this game you will have to guess the animal')
name = input('What is your name? ')
print('Cool name, I feel like i heard of it before hmmm %s..' % name)
print()
print('Enough stalling onto the game!!!')
guess1 = input('Which bear lives in the north pole ')
check_guess(guess1.strip().lower(), 'polar bear')
print("pass OK")
别忘了投票 :)（斋月卡里姆！！！）