Finding in elements in a tuple and filtering them

Question

Assuming I have a tuple like:

[(\'text-1\',\'xxx\'), (\'img-1\',\'iii\'), (\'img-2\',\'jjj\'), (\'text-2\',\'xxx\')]

I want to filter out t

Answer 1

tuple_filter = lambda t, i, w: filter(lambda a: a[i].startswith(w), t)
newtuple = tuple_filter(thetuple, 0, 'img')