Python Main Function - The Entry Point of a Python Program File
 Every program file has a starting point. So, the main function in python acts as an execution point for the program file. It is necessary to define the main function in order to start the execution of the program. When there is no main method in python and the command to run a Python program is given to the interpreter, the code at indentation level 0 is to be executed.  However, before doing that, python will define a few special variables such as __name__. The interpreter sets the __name__ variable to have a value __main__ if the source file is executed as the main program. , The __name__ will be set to the module’s name if the file is being imported from another module. Let's first understand what are python functions. What are the functions in python? A block of reusable code that performs certain actions as defined is known as functions in python programming. They are used to perform actions on certain input data and present the output to the end-user. Further, it is a piece of code to perform a specific task. There are three types of functions in Python: Built-in function User-defined functions Anonymous functions Python main function As we have seen the main function is the entry point of any program. But the python interpreter executes the source code sequentially and doesn’t call any method if it’s not part of the code. But, it will be executed when the file is imported as a module. Read the full article
