I’m doing an exercise where I create a function that receives two lists and returns the multiplications of the items at the same indices in a separate single list. Example:
transform("1 5 3", "2 6 -1") #should return [2, 30, -3]
To be clear, the program takes the items at index 1, 2 and 3 and multiplies them like this:
(1 * 2), (5 * 6), (3 * -1)
Now, the problem I face is that it is a must to use zip() function in the program, which I have not properly used yet.
I have made a program that does the general task successfully, but I can’t figure out a solution that would use a zipped list. Could anyone help me with this? I have an idea that I could use the zipped list "q" that I have created within the map() function, but I don’t know how.
Here is my program:
def transform(s1, s2): i = 0 s = s1.split(' ') d = s2.split(' ') while i < len(s): try: s[i] = int(s[i]) d[i] = int(d[i]) i += 1 except ValueError: break print(s, d) q = list(zip(s, d)) print(q) final = list(map(lambda x, y: x * y, s, d)) return final def main(): print(transform("1 5 3", "2 6 -1")) if __name__ == "__main__": main()
Thank you in advance to anyone that helps!
Source: Python Questions