如何获取所选选项并将其存储在python中的变量中?
我想从dict中获取所选选项并对其进行操作,但当我打印变量时,它不会打印任何选项如何获取所选选项并将其存储在python中的变量中?,python,Python,我想从dict中获取所选选项并对其进行操作,但当我打印变量时,它不会打印任何选项 def play(): switcher = { 1: "Rock", 2: "Paper", 3: "Scissors"} print(switcher) i = input("Enter Your Choice: ") s = switcher.get(i) print(s) play() 调用switcher.
def play():
switcher = {
1: "Rock",
2: "Paper",
3: "Scissors"}
print(switcher)
i = input("Enter Your Choice: ")
s = switcher.get(i)
print(s)
play()
调用
switcher.get(i)
时,变量i
是一个字符串,而它应该是一个int。这就解释了您的问题。作为解决方案,我建议您首先检查输入值是否正确(如果不正确,请重复该问题),然后将其转换为int,如下所示:
def play():
switcher = {
1: "Rock",
2: "Paper",
3: "Scissors"}
print(switcher)
while True:
i = input("Enter Your Choice: ")
if i in ["1", "2", "3"]:
i = int(i)
break;
s = switcher.get(i)
print(s)
play()
i
是字符串,因为这是input()
的返回类型。尝试switcher.get(int(i))
。理想情况下,虽然您可以将键更改为字符串,或者在无法将输入转换为int
的情况下进行更好的处理。好的,明白了。谢谢