Answers for "python list comprehension multiple for"

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python list comprehension multiple for

"""
List comprehension goes through the loops in the order you'd expect. Outer
loops (first loops) are executed first, then inner loops.
"""

numbers = [1, 2, 3, 4, 5]
letters = ['a', 'b', 'c', 'd', 'e']

list_comprehension = [str(number)+letter for number in numbers for letter in letters]

#which is the same as:
typical_for = []
for number in numbers:
    for letter in letters:
        typical_for.append(str(number)+letter)

assert list_comprehension == typical_for

print(list_comprehension)
# ['1a', '1b', '1c', '1d', '1e', 
#  '2a', '2b', '2c', '2d', '2e', 
#  '3a', '3b', '3c', '3d', '3e', 
#  '4a', '4b', '4c', '4d', '4e', 
#  '5a', '5b', '5c', '5d', '5e']
Posted by: Guest on August-08-2021

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