类型错误：“生成器”对象不可下标错误

Question

This is basic code, but it is throwing a 'TypeError: 'generator' object is not subscriptable' on the "print(numList[index])." Can someone please help me get rid of this error.

numbers = input("Enter 9 Numbers: ")
numList = (int(x) for x in numbers.split())

index = 0
for count in range(0, 10):
    if count % 3 == 0:
        print(numList[index])
    else:
        print(numList[index])
    index+=1

Answer 1

To make numList an array instead of a generator change the brackets from ( to [

numList = [int(x) for x in numbers.split()]

Regardless of whether it is an array or a generator you can iterate over the numList like the following

for num in numList:
    if num % 3 == 0:
        print("{} is multiple of 3".format(num))
    else:
        print("{} is not multiple of 3".format(num))

Answer 2

The error was being thrown when I was converting the string input into an integer list. To fix it, I used a loop and converted each index into an integer.

Answer 3

The line: numList = (int(x) for x in numbers.split())

Creates a generator, which only returns a single value each time it is called (see https://realpython.com/introduction-to-python-generators/ ).

What you probably want is a list comprehension, which will create a new list that you can index: numList = [int(x) for x in numbers.split()]

Once you do this, you'll notice that your range goes beyond the length of numList (9), but that's also an easy fix:

for count in range(0, 9):

Another option would be to keep the generator and do something like this:

numbers = input("Enter 9 Numbers: ")
numList = (int(x) for x in numbers.split())

for count, num in enumerate(numList):
    if count % 3 == 0:
        print(num)
    else:
        print(num) #eventually you what to do something different here?