Modules and packages in Python

Answer 1

Python modules and Python packages, two mechanisms for modular programming, are discussed in this article.

Modular programming is a technique for breaking down a large, complex programming task. This is into smaller, easier-to-manage subtasks or modules. Individual modules can then be put together like puzzle pieces to form a larger program.

Modularizing code in a wide application has many advantages.

Simplicity is key.

Rather than concentrating on the entire problem, a module usually focuses on a single, relatively small aspect of it. You'll have a smaller issue domain to wrap your head around if you're operating on a single module.

Maintainability

Modules are usually designed to implement logical boundaries between different problem domains. Modifications to a single module are less likely to have an effect on other parts of the software if modules are written in a way that minimizes interdependency. You might also be able to make adjustments to a module without knowing anything about the rest of the application. This makes it more feasible for a large group of programmers to collaborate on a project.

Reusability:

Functionality specified in a single module can be easily reused by other parts of the application (via an appropriately defined interface). It is no longer necessary to repeat code.

Scoping:

Modules usually have their own namespace, which helps to prevent identifier conflicts in various parts of a program.

Python Modules

A module can be described in three different ways in Python:

A module can be written entirely in Python.

A module, such as the (regular expression) module, can be written in C and loaded dynamically at run-time.

The iter tools module is an example of a built-in module that is intrinsically embedded in the interpreter.

In all three instances, the import statement is used to access the contents of a module.

The focus will be on Python-based modules in this section. The great thing about Python modules is that they are extremely simple to put together. All you have to do is build a file with valid Python code and give it a.py extension. That concludes our discussion. There is no need for any voodoo or special syntax.

Assume you've built a file named mod.py that contains the following code.