Introduction
List basics
Lists with if statements and loops
12. List length in if statements
Lists in functions
Summary

Instruction

Good. We often check the number of list elements using the len(list_name) function in if statements:

# check if there are any elements
if len(companies) > 0:
  print('Some elements found')
else:
  print('No elements found')

Exercise

You are again given the tourist arrivals in France (they are available in the tourist_arrival variable in the Code Editor), but a friend of yours experimented with it a little bit. He might have deleted some entries from the list.

Write a piece of code that will check whether there are exactly 12 items in tourist_arrivals. If there are exactly 12 items, do nothing. Otherwise, print:

Incorrect number of months.

Stuck? Here's a hint!

To check if the number of months is wrong, use:

if len(tourist_arrivals) != 12