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

list1 = ['abc', 'def']
list2=[]
for t in list1:
    for h in t:
        list2.append(h)
map_list = []        
for x,y in enumerate(list2):
    map_list.append(x)
print (map_list)

Output:

>>> 
[0, 1, 2, 3, 4, 5]
>>> 

This is what you want exactly.

If you dont want to reach each element then:

list1 = ['abc', 'def']
map_list=[]
for x,y in enumerate(list1):
    map_list.append(x)
print (map_list)

Output:

>>> 
[0, 1]
>>>