What are the differences between zip() and map() in Python?
The zip()
function combines elements from multiple iterables, while map()
applies a function to each item of an iterable.
Can you give me an example of how to use both functions?
Sure! For zip()
, you can do: list(zip([1, 2, 3], ['a', 'b', 'c']))
which results in [(1, 'a'), (2, 'b'), (3, 'c')]
. For map()
, you can use: list(map(str, [1, 2, 3]))
which converts numbers to strings, resulting in ['1', '2', '3']
.
When should I use zip() instead of map()?
Use zip()
when you want to combine multiple iterables into pairs, and use map()
when you want to apply a function to each element of a single iterable.
Are there any performance differences between them?
Generally, map()
can be faster for applying functions since it uses lazy evaluation, while zip()
creates a new list of tuples.
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