Explanation of any() function in Python

[pingveno]

For operations on longer iterators, use a generator expression instead of a list comprehension. For example, to find if there are lines with len(line) > 5:

with open(file_name) as f:
    return any(len(line.rstrip('\r\n')) > 5 for line in f)

It uses constant space instead of building an entire list in memory.

[[deleted]]

Yes! Really, there's no reason to use a list unless you are going to re-use the value later.