Multiplying all combinations of values of two lists [closed]

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Closed 2 years ago.

I want to multiply each element of a list by each element of a second list.

Example:

a = [1, 2, 3]
b = [2, 3, 4]
ILookFor = [2, 4, 6, 3, 6, 9, 4, 8, 12]

How can I get the desired result?

回答1:

This is how you would do it:

a = [1, 2, 3]
b = [2, 3, 4]
result = [c * d for c in b for d in a]
print(result)
# [2, 4, 6, 3, 6, 9, 4, 8, 12]

回答2:

a = [1, 2, 3]
b = [2, 3, 4]
result = [i * j for i in b for j in a]
# [2, 4, 6, 3, 6, 9, 4, 8, 12]

来源：https://stackoverflow.com/questions/45882842/multiplying-all-combinations-of-values-of-two-lists