将用户输入作为字符串并打印一个变量Python

Question

我试图接受一个用户输入，然后将该输入转换为一个变量以打印出一个列表。

food_list = ["Rice", "l2", "l3"]
Rice = []
l2 = []
l3 = []
answer = input("What item would you like to see from the list")
if answer in food_list:
print("answer")

我希望输出是打印Rice列表，而不仅仅是字符串"；大米"；就像过去一样。输入会将其作为字符串，但我想将输入转换为列表变量。

Answer 1

您可以使用字典：

~/tests/py $ cat rice.py
food_list ={"Rice":"Rice is nice" }
print("What item would you like to see from the list")
answer = input(": ")
if answer in food_list.keys():
print(food_list[answer])
~/tests/py $ python rice.py
What item would you like to see from the list
: Rice
Rice is nice

Answer 2

Python的in关键字功能强大，但它只检查列表成员身份。

你想要这样的东西：

food_list = ["Rice", "Cookies"]
answer = input("What item would you like to see from the list")
# if the food is not in the list, then we can exit early
if answer not in food_list:
print("Food not found in the list")
# we know it's in the list, now you just filter it.
for food in food_list:
if food == answer:
print(food)

编码快乐！