Since Python is dynamically typed, the data type of a variable is determined at runtime based on the assigned value. In general, the data types are used to define the type of a variable. It represents the type of data we are going to store in a variable and determines what operations can be done on it.

So the data type of num is of the int class. Since everything is an object in Python programming, data types are actually classes and variables are instances (object) of these classes. In Python, numeric data type is used to hold numeric values. Integers, floating-point numbers and complex numbers fall under Python numbers category.

In Python, during declaring a variable or an object, you don't need to set the data types. Data type is set automatically based on the assigned value. The following example, demonstrating how a variable's data type is set based on the given value − x = "Hello World!" # Printing its value and type print("x = ", x) print("type of x = ", type(x))

By learning Python data types explained through working with strings, you’ll get comfortable with: Text comes up everywhere, so strings are one of the most practical data types to master. Sometimes you’ll need to check what type of data you’re working with, or change it into something else. That’s where type checking and conversion come in.