Why learn functions and error handling in Python?

Functions let you write reusable, maintainable code that scales, a core skill for developers. Error handling ensures your applications run reliably and provide clear feedback when issues arise, rather than crashing unexpectedly. These fundamental skills set the foundation for writing production-ready code.

Why learn Python packages?

Python packages give you access to thousands of pre-built tools so you don't have to write everything yourself, saving you time and effort. Learning to use packages is essential for real-world development work, where developers regularly build on existing code rather than starting from zero each time.

Intermediate Python for Developers Course

Name: Intermediate Python for Developers
Rating: 4.830672112885258 (5386 reviews)

Intermediate Python for Developers

BasicSkill Level

4.8+

5,386 reviews

Updated 12/2025

Dive into the Python ecosystem, discovering modules and packages along with how to write custom functions!

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Course Description

Elevate your Python skills to the next level

This course will delve deeper into Python's rich ecosystem, focusing on essential aspects such as built-in functions, modules, and packages. You'll be introduced to the power of Python's modules, empowering you to develop more quickly by reusing existing code rather than writing your own from scratch every time! You'll see how people have extended modules to create their own open-source software, known as packages, discovering how to download, import, and work with packages in your programs.

Master custom functions

You'll learn best practices for defining functions, including comprehensive knowledge of how to write user-friendly docstrings to ensure clarity and maintainability. You'll dive into advanced concepts, such as default, positional, and keyword arguments, which enhance the flexibility and usability of your functions. By understanding how to work with these arguments, you'll be able to create more robust and adaptable solutions to various programming challenges.

Debug your code and use error handling techniques

You'll learn to interpret error messages, including tracebacks from incorrectly using functions from packages. You'll use keywords and techniques to adapt your custom functions, effectively handling errors and providing bespoke feedback messages to developers who misuse your code! By the end of this course, you'll have the skills needed to write clean, reusable code and confidently tackle development projects.

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What you'll learn

Assess when a lambda expression is more efficient than a standard function definition for a given programming task
Define custom Python functions that incorporate default, positional, and keyword arguments to reduce code repetition
Distinguish between positional, keyword, arbitrary positional (*args), and arbitrary keyword (**kwargs) arguments within function calls
Evaluate error-handling approaches by selecting correct try/except or raise constructs to manage specified exceptions.
Identify appropriate Python built-in functions, modules, and external packages that meet specified coding requirements

Prerequisites

Introduction to Python for Developers

The Python Ecosystem

Course Description

Elevate your Python skills to the next level

Master custom functions

Debug your code and use error handling techniques

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What you'll learn

Earn Statement of Accomplishment

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Join over .css-nklxlk{color:var(--wf-brand--main, #03EF62);}18 million learners and start Intermediate Python for Developers today!

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Join over 18 million learners and start Intermediate Python for Developers today!