The sequences in Python are indexed.
It consists of the positive and negative numbers. Positive numbers use 0
as the first index, 1 as the second index, and so on. Hence, any index
for a positive number n is n-1. Unlike positive numbers, index
numbering for the negative numbers start from -1 and it represents the
last index in the sequence. Likewise, -2 represents the penultimate
index. These are known as negative indexes. Negative indexes are used
for:
Removing any new-line spaces from the string, thus allowing the string to except the last character, represented as S[:-1]
Showing the index to representing the string in the correct order