Accessing Characters in Python String

Python String is an ordered sequence of unicode characters and stored as an array. In order to access characters in a String you need to specify string name followed by index in the square brackets. Since Python uses zero-based indexing, the first character of a string is at position 0, and for a string of length n, valid indices range from 0 to n-1.

In String in Python you can also use negative indexing which allows you to access characters starting from the end of the string. For example, -1 refers to the last character, -2 to the second last, and so on.

Here is an illustration of accessing characters in a Python string using both positive (left to right) and negative (right to left) indexing.

Getting characters from a string in Python example

s = "Hello World"
#first character
print(s[0])
#3rd character
print(s[2])
print('length of String', len(s))
#last character
print(s[len(s)-1])

Output

H
l
length of String 11
d

Getting characters using negative indexing

s = "Hello World"
# last character
print(s[-1])
print('length of String', len(s))
# first character by making the index negative
print(s[-(len(s))])

Output

d
length of String 11
H

That's all for this topic Accessing Characters in Python String. If you have any doubt or any suggestions to make please drop a comment. Thanks!

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