退出循環(huán)時如何獲得 balance 的新值？現(xiàn)在它只取原始值并打印它。我也試過 balance += (balance + dep)balance = 500def main(balance): if balance <= 999999: intrest = 0.01 if balance >= 1000000: intrest = 0.02 menu = int(input('Press 1 for balance, 2 for deposit, 3 for withdrawal or 4 for interest return: ')) if menu == 1: print(balance) elif menu == 2: dep = int(input('How much do you want to deposit? ')) balance = (balance + dep) print('Your new balance is', balance) if balance <= 999999: intrest = 0.01 if balance >= 1000000: intrest = 0.02 print('Congratulations, your intrest just went up!') elif menu == 3: wit = int(input('How much do you want to withdraw? ')) balance = (balance - wit) print('Your new balance is', balance) if balance <= 999999: intrest = 0.01 print('Your intrest is now back to standard!') elif menu == 4: intrest_return = balance + (balance * intrest) print(intrest_return) while True: restart = str(input('Would you like to do more? Press y for yes or n for no: ')) if restart == 'y': main(balance) else: breakmain(balance)print(balance)
2 回答
三國紛爭
TA貢獻1804條經(jīng)驗 獲得超7個贊
您應(yīng)該return在代碼中使用 a ，然后將其分配給您的變量。這將是您的代碼：
balance = 500
def main(balance):
if balance <= 999999:
intrest = 0.01
if balance >= 1000000:
intrest = 0.02
menu = int(input('Press 1 for balance, 2 for deposit, 3 for withdrawal or 4 for interest return: '))
if menu == 1:
print(balance)
elif menu == 2:
dep = int(input('How much do you want to deposit? '))
balance = (balance + dep)
print('Your new balance is', balance)
if balance <= 999999:
intrest = 0.01
if balance >= 1000000:
intrest = 0.02
print('Congratulations, your intrest just went up!')
elif menu == 3:
wit = int(input('How much do you want to withdraw? '))
balance = (balance - wit)
print('Your new balance is', balance)
if balance <= 999999:
intrest = 0.01
print('Your intrest is now back to standard!')
elif menu == 4:
intrest_return = balance + (balance * intrest)
print(intrest_return)
while True:
restart = str(input('Would you like to do more? Press y for yes or n for no: '))
if restart == 'y':
main(balance)
else:
break
return balance
balance=main(balance)
print(balance)
慕田峪7331174
TA貢獻1828條經(jīng)驗 獲得超13個贊
添加global balance函數(shù)的第一行。
除非您這樣做，否則在函數(shù)內(nèi)分配的任何變量都被視為本地變量，這就是您收到錯誤的原因。
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