TypeError: list indices must be integers, not str Python

Question

list[s] is a string. Why doesn\'t this work?

The following error appears:

TypeError: list indices must be integers, not str

Answer 1

Do not use the name list for a list. I have used mylist below.

for s in mylist:
    t = (mylist[s], 1)

for s in mylist: assigns elements of mylist to s i.e s takes the value 'abc' in the first iteration and 'def' in the second iteration. Thus, s can't be used as an index in mylist[s].

Instead, simply do:

for s in lists:
    t = (s, 1)
    map_list.append(t)
print map_list
#[('abc', 1), ('def', 1)]