What is the purpose of the zip() function in Python?
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Answer:
The zip
function in Python is used to combine two or more iterables into a single iterable of tuples. Each tuple contains the n-th elements from each of the iterables. The function is particularly useful when you need to process multiple lists in parallel, for example, when iterating over multiple lists at the same time.
Here's an example of how you can use the zip
function to combine two lists:
# Two lists list1 = [1, 2, 3, 4] list2 = ['a', 'b', 'c', 'd'] # Combine the lists using the zip function result = list(zip(list1, list2)) print(result)
Output:
[(1, 'a'), (2, 'b'), (3, 'c'), (4, 'd')]
As you can see, the zip
function has combined the elements from the two lists into a single list of tuples, where each tuple contains the corresponding elements from each list.
If the iterables have different lengths, the zip
function will stop as soon as it runs out of elements in the shortest iterable:
# Two lists of different lengths list1 = [1, 2, 3, 4] list2 = ['a', 'b', 'c'] # Combine the lists using the zip function result = list(zip(list1, list2)) print(result)
Output:
[(1, 'a'), (2, 'b'), (3, 'c')]
The zip
function can also be used with more than two iterables. In this case, each tuple will contain the n-th elements from each of the iterables:
# Three lists list1 = [1, 2, 3, 4] list2 = ['a', 'b', 'c', 'd'] list3 = [10, 20, 30, 40] # Combine the lists using the zip function result = list(zip(list1, list2, list3)) print(result)
Output:
[(1, 'a', 10), (2, 'b', 20), (3, 'c', 30), (4, 'd', 40)]
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