try + list question

Question

Why n[1:1] = 1 has NOT been changed and it is still 2!?? Why s[1:1] = 'b' can be changed but (n[1:1] = 1) cannot?

try:
s = ['a', 'c']
n = [0, 2]
s[1:1] = 'b'
n[1:1] = 1
except:
pass
print(s[1], n[1])

Output is: 'b 2'

Answer 1

Your [1:1] forms a slice. This is not a element in the list. Your 'b' works because strings act like a list. n[1:1] = [1] would work.

Answer 2

Thanks again.
After you description, I tried it with square brackets [1] and it worked.
and also for strings which will be seperated letter by letter as a list item (‘bd’)

Answer 3

Thank you John.

Answer 4

Note: if you print your list, you are inserting elements.
s = ['a', 'c']
s[1:1] = 'bd'
print(s)
#outputs
#['a', 'b', 'd', 'c']