将范围内的两位整数转换为列表

Question

I met a problem that when I was trying to add like '11' as one item in a list by using range(x,y), it doesn't work.(OK, 'IndexList' is just a silly mistake.)

def choose_a():
    indexList = []
    indexOf = input("Enter the  the index number: ")
    for i in range(1,13):
        indexList += str(i)
    while indexOf not in IndexList:
        indexOf = input("Enter the index number: ")
    return indexOf
a = choose_a()
print(a)

Answer 1

When you i is 11 , the following line:

    indexList += str(i)

adds two '1' s to the list, not '11' .

Problems I noticed:

1. Use

    indexList.append(str(i)) 

   instead of

    indexList += str(i) 

2. In the while loop, use str(indexOf) .

3. Fix a typo in the while line. IndexList -> indexList

Here's a working version.

def choose_a():
    indexList = []
    indexOf = input("Enter the  the index number: ")
    for i in range(1,13):
        indexList.append(str(i))
    while str(indexOf) not in indexList:
        indexOf = input("Enter the index number: ")
    return indexOf