Using a list comprehension inside any()
or all()
forces the entire list to be created in memory before the check begins.
This prevents the short-circuiting behavior that these functions are designed to leverage, where any()
stops at the first
True
and all()
stops at the first False
.
Using a generator expression provides the same functionality while preserving the short-circuiting behavior of these functions. This could save
both processing time and memory, especially for large iterables or when the condition has side effects or is computationally expensive.