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What is the difference between list comprehension and generator expression in Python?
List comprehension and generator expression are both powerful features in Python that allow for concise and efficient ways to create lists. Here is the difference between the two:
- List Comprehension: List comprehension is a concise way to create lists in Python. It allows you to create a new list by iterating over an existing iterable and applying an expression to each item. The result is a new list that is created in memory.
- Generator Expression: Generator expression is similar to list comprehension, but it returns a generator object instead of a list. This means that the elements are not stored in memory all at once, but are yielded one by one as requested. Generator expressions are more memory efficient than list comprehension for large datasets.
In summary, list comprehension is used when you want to create a new list with all the elements generated and stored in memory, while generator expression is used when you want to iterate over the elements one by one without storing them all at once.
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