Using variables, data types, and data structures

In Python, variables are the building blocks of any code. It’s simply a value of some given type assigned to an object. For example, if I set a variable called x equal to 10, the variable x now holds that value (until it is changed). In short, variables are used to store data. Unlike some other programming languages, such as Java, the variable type does not need explicit declaration in Python. The declaration or type of a variable is determined automatically when you assign a value to it (although you can and should change data types as needed). There are several built-in data types in Python. Here are some common ones:

• Numeric types: There are numerous types of numeric data types, including int (integers), float (floating-point numbers), and complex (complex numbers). Numeric variables in Python are used to store numerical data:
  • Integers represent whole numbers without any fractional or decimal part. They can be positive...