xrange generates numbers lazily, making it memory efficient for loops and large sequences. It doesn’t store the entire list in memory.
range creates a list of numbers in memory, which can be inefficient for large ranges compared to xrange.
In Python 3, range replaces xrange functionality, providing lazy evaluation for memory efficiency while maintaining list-like behavior.
For large sequences, use xrange in Python 2 or range in Python 3 to conserve memory instead of creating a full list.
Use list(range(start, stop)) in Python 3 if you need a full list from range for operations requiring list methods.
Replace xrange with range when migrating Python 2 code to Python 3, as range now handles sequences lazily in Python 3.