Hold an object, using class in python

Question

I write a program to weave lists of floats together, for example:

l1 = [5.4, 4.5, 8.7]
l2 = [6.5, 7.8]
l3 = [6.7, 6.9]

I want to weave l1 into

Answer 1

OK, as peoples comments, this seems a strange case to start using classes but something like this should work:

from itertools import zip_longest

class Weaver():
    def __init__(self,data):
        self.result = data

    def weave(data):
        self.result = sum(zip_longest(self.result, data),()) # or whatever version
                                                             # works best from
                                                             # the other answers

w = Weaver(l1)
w.weave(l2)
w.weave(l3)
print(w.result)

This creates a Weaver object w and initialises it with l1. Then you weave the other lists in one by one and it stores the result internally and finally you access and print that result.