BSc IT - Programming in Python

When you import  a module in Python, you are telling the interpreter to make the functions, classes, or variables defined in that module available for use in your current script. This is done using the import statement followed by the module name, such as import math. Python searches for the module file in predefined directories and loads it if found. 

Once the module is found, Python loads  it into memory by executing all the top-level code in the module, such as variable assignments and function definitions. This step happens only once, even if the module is imported multiple times. Loaded modules are stored so that they can be reused without reloading, improving performance and avoiding redundant operations. 

After the module is loaded, you can execute  its functions or access its variables using dot notation, like module_name.function_name(). This allows you to use the functionality defined in the module throughout your program. Modules help organize code, promote reusability, and make programs more manageable.

Import - Tells Python which module to use
    
Load - Python reads and runs the module code once
    
Execute - Use functions/variables from the module