擅长:python、mysql、java
<pre><code>items = {'1': '2', '3': '4', '5': '6'}
choice = ''
while choice not in items:
choice = input("Select your item: ")
print(choice)
if choice in items:
the_choice = items[choice]
print("You chose",the_choice)
else:
print("Uh oh, I don't know about that item")
</code></pre>