Python, a versatile programming language, offers a variety of string methods that can be employed to check if the input meets certain criteria.

For example, a user may enter a text string in all capital letters and you need to normalize the data by translating it to lower case. You can translate user input to lowercase using Python's ...

Write a Python program that gets a number using keyboard input. (Remember to use input for Python 3 but raw_input for Python 2.) If the number is positive, the program should call countdown. If the ...