为什么我在循环返回和打印时得到不同的结果？

Question

def myarray(num_list):
    for item in num_list:
        return item

def myarray(num_list):
    for item in num_list:
        print (item)

When I run myarray([2,4,6]) the first returns only 2 while the second prints all the items:

2
4
6

Why? What's the difference?

Answer 1

Please format your post so it shows the code correctly. You can edit the post. Select the code part and press on the two curly brackets.

The first statment only returns "2" because the keyword "return" stops the rest of the loop from running.

In the second version you simply print out the content of the list for each position in the list. Thats why the second version shows all 3 numbers.