Question

import decimal

print("Choose how you want to calculate tax\n")
print("Type 1 to calculate the tax amount\n")
print("Type 2 to add tax to an amount\n")
print("Type 3 to calculate the amount without tax\n")
choice = input("Type 1, 2 or 3: ")
if choice == int(1):
    amount = input("Enter an amount (with tax included): ")
    tax = input("Enter the tax percentage: ")
    amount = float(amount) / (int(100) + float(tax)) * int(100)
    print("€" , round(amount,2))

脚本在第一次输入后停止。（蟒蛇）我在做什么错了？

Answer 1

int(1)（或int(100)）意义不大，因为1已经是int。您可以改为：

if int(choice) == 1:
    # ...

或更强大：

if choice == '1':
    # will not raise an error on non-digit input

Answer 2

零钱。在比较之前将选择更改为int

...
choice = int(input("Type 1, 2 or 3: "))
if choice == 1:
    ...

输入后脚本停止？

2 个答案: