How to use only one character from the user input string In Python

This approach will use the string indexing to extract only a single required character from the user input.

Using only the first character of the string:

Output:

Please enter a character:adfs
Your single character input was: a

Using the i^th character of the string:

Output:

Please enter a character:0123456789
Your single character input was: 7

Using the last character of the string:

Output:

Please enter a character:dfsg
Your single character input was: g

The time complexity of this code is constant, O(1), because the input string has only one character and the indexing operation to retrieve the last character takes constant time.

The space complexity is also constant, O(1), because the only memory used is for the variable usrInput, which stores a single character.

Through this article, you will learn how to accept only one character as input from the user in Python.