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

for s in list will produce the items of the list and not their indexes. So s will be 'abc' for the first loop, and then 'def'. 'abc' could only be a key to a dict, not a list index.

In the line with t fetching the item by index is redundant in python.