Discover Python's rich ecosystem of built-in functions and modules, plus how to download and work with packages.

Built-in functions

Calculating key metrics

Finding the average

Sorting lists

Modules

What is a module?

Working with the os module

Working with the string module

Packages

Package or module

Working with pandas

Reading files with pandas

The Python Ecosystem

Learn the fundamentals of functions, from Python's built-in functions to creating your own from scratch!

Defining a custom function

Custom function syntax

Report-generating function

Building a password validator

Default and keyword arguments

Positional versus keyword arguments

Adding a keyword argument

Calculating a discount

Docstrings

Single-line docstrings

Multi-line docstrings

Arbitrary arguments

Adding arbitrary arguments

Arbitrary keyword arguments

Working with functions

Build lambda functions on the fly, and discover how to error-proof your code!

Lambda functions

Calculating file sizes

Calling lambda in-line

Lambda functions with iterables

Introduction to errors

Debugging code

Module and package tracebacks

Fixing an issue

Error handling

Avoiding errors

Returning errors

Congratulations

Lambda functions and error-handling

Learn to use Python's built-in functions, modules, and packages effectively. Create custom functions with clear documentation and flexible arguments that suit various use cases. Master error handling by reading tracebacks, identifying common errors, and using try-except blocks. Understand when to use lambda functions versus full definitions. By the end, you'll be able to write reusable code that other developers can understand, extend, and debug confidently.

<h2>Elevate your Python skills to the next level</h2>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.<br><br><h2>Master custom functions</h2>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.<br><br><h2>Debug your code and use error handling techniques</h2>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.

Introduction to Python for Developers

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

Module and package tracebacks

Intermediate Python for Developers

Hands-on interactive exercise