Generator Expressions
Generator expressions are a concise, memory-efficient way to create generators in Python, using a syntax similar to list comprehensions but with parentheses instead of brackets. They produce items on-the-fly using lazy evaluation, which avoids storing the entire sequence in memory at once. This makes them ideal for processing large datasets or infinite sequences where memory usage is a concern.
Developers should use generator expressions when working with large data streams, performing memory-intensive operations, or chaining transformations without intermediate storage. They are particularly useful in data processing pipelines, file I/O operations, and scenarios where only one item needs to be processed at a time, such as in loops or with functions like sum() or max().