Question

在这段代码中，我正在寻找输入：

mode = input("Generate S1(0) or S2(1)?\n")
if mode == "0":
    mode = "S1"
elif mode == "1":
    mode = "S2"
else:
    print("Mode not recogised!")

为了能够更好地处理错误（模式> 1），即如果遇到else条件，我希望代码再次询问输入。

知道我该怎么做或我正在寻找哪种功能？

Answer 1

mode = None
while not mode:
    answer = input("Generate S1(0) or S2(1)?\n")
    if answer == "0":
        mode = "S1"
    elif answer == "1":
        mode = "S2"
    else:
        print("Mode not recogised!")

Answer 2

这有点棘手。但你可以这样做。

while 1:
    mode = input("Generate S1(0) or S2(1)?\n")
    if mode == "0":
        mode = "S1"
    elif mode == "1":
        mode = "S2"
    else:
        print("Mode not recogised!")
        continue
    break

在python3中发生错误时询问输入

2 个答案: