What is the difference between map and filter in Python?
In Python, map
applies a function to all items in an iterable, while filter
creates a subset of items that meet a condition.
Can you give me an example of how to use both?
Sure! For map
, you can use it like this: list(map(lambda x: x*2, [1, 2, 3]))
which returns [2, 4, 6]
. For filter
, you can do: list(filter(lambda x: x > 1, [1, 2, 3]))
which returns `[2, 3].
When should I use map instead of filter?
Use map
when you want to transform all items in an iterable, and use filter
when you want to select specific items based on a condition.
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