This online data science specialization is designed for learners with little to no programming experience who want to use Python as a tool to play with data. You will learn basic input and output ...

A broad survey of the computer science discipline, focusing on the computer's role in representing, storing, manipulating, organizing and communicating information. Topics include hardware, software, ...

Many programs take input from a user and then validate it before it is processed. It is important that the messages to the user are appropriate to reduce the risk of invalid data being entered.