Python Coding Challange - Question With Answer(01020125)

 

Line-by-Line Breakdown:

1. my_list = [5, 10, 15, 20]
   This creates a list called my_list containing the values [5, 10, 15, 20].

2. for index, item in enumerate(my_list):
   The enumerate() function is used here. It takes the list my_list and returns an enumerate object. This object produces pairs of values:

   • index: The position (index) of each element in the list (starting from 0).
   • item: The value of the element at that index in the list.

   So for my_list = [5, 10, 15, 20], enumerate() will generate:

   • (0, 5)
   • (1, 10)
   • (2, 15)
   • (3, 20)

   These pairs are unpacked into the variables index and item.

3. print(index, item)
   This prints the index and the item for each pair generated by enumerate().

How the Code Works:

• On the first iteration, index is 0 and item is 5, so it prints 0 5.
• On the second iteration, index is 1 and item is 10, so it prints 1 10.
• On the third iteration, index is 2 and item is 15, so it prints 2 15.
• On the fourth iteration, index is 3 and item is 20, so it prints 3 20.

Output:

0 5
1 10
2 15
3 20

This code is useful for iterating over both the index and value of items in a list, which can be handy when you need both pieces of information during the iteration.