for loops also have an else, which executes after the loop completes normally (i.e. if the loop did not encounter a break statement)

The common construct is to run a loop and search for an item. If the item is found, we break out of the loop using the break statement.

Loop ends in 2 scenarios:

1) the item is found and break is encountered 2) the loop ends without encountering a break statement

else can be used to know which one of these is the reason for a loop’s completion

Example:

for item in container:
    if search_something(item):
        # Found it!
        process(item)
        break
else:
    # Didn't find anything..
    not_found_in_container()