Python enumerate(): Simplify Looping With Counters

Description

Summary

• In Python, a for loop is usually written as a loop over an iterable object.
• >>> >>> print(values[0])a You can see in this example that accessing values with the index 0 gives the first element, a.
• However, there are many times when you might not want the count from enumerate() to start at 0.
• On the third line of check_whitespace(), enumerate() is used in a loop over lines.
• For each elem in sequence, you yield control back to the calling location and send back the current values of n and elem.