Question

I’m trying to replace items in 1 list of lists with items from another list of lists.

    alist = [[1,2,3], [4,5,6], [7,8,9]]
    blist = [[a,b,c], [d,e,f], [g,h,i]]

Basically, I want to replace the items in alist with it’s blist counterpart. For example, if someone chose 1 in alist, I want to replace it with the same index from blist which would be a.

    alist = [[a,2,3], [4,5,6], [7,8,9]]

Any suggestions?

Answer 1

>>> z = [(i, x.index(item)) for i, x in enumerate(alist) if item in x][0]
>>> alist[z[0]][z[1]] = blist[z[0]][z[1]]
>>> alist
[['a', 2, 3], [4, 5, 6], [7, 8, 9]]

See it working online: ideone