GuideIntermediate
Python Essentials Guide
This guide teaches you Python from scratch, focused on what a backend developer actually needs: data types, control flow, functions, modules, error handling, working with files and JSON, and virtual environments. It's the foundation for the Backend Python Developer path.
- 21
- lessons
- 3
- modules
- English · Spanish
- available in
- Free
- access
Outcomes
What you'll be able to do
- Syntax and types: str, int, float, bool, list, dict, tuple, set
- Control flow: if/elif/else, for, while, break, continue
- Functions: Definition, parameters, return, scope
- Modules and packages: Code organization, import
- Error handling: try/except, common exceptions
- File handling: Reading and writing files
- JSON: json.loads(), json.dumps(), serialization
- Virtual environments: venv, pip, requirements.txt
Before you start
What you need to bring
Requirements and materials
- None. Python 3.9+ installed.
- Basic terminal skills (running commands).
Content
The syllabus, module by module
Open any of them to see its lessons.
- 1. Introduction — File Handling, JSON and Environments
- 2. File I/O: Reading and Writing Files
- 3. JSON: Parsing and Serializing
- 4. Environment Variables and python-dotenv
- 5. Virtual Environments and pip
- 6. argparse — Command-Line Interfaces
- 7. requests: Consuming REST APIs
- 8. Module Project — CLI Tool with the JSONPlaceholder API
Where it fits
This guide is part of something bigger
It's studied inside these programs, with support and dates.
Common questions
What people usually ask
No limit. It's a free guide: come in whenever you like, as often as you like.
No. Modules run from easier to harder, but you can jump to the one you need. Progress is saved per lesson.
Whatever is needed is listed under “What you need to bring”, above. If nothing is listed there, you can start from zero.
In the Club's WhatsApp group, and every two weeks there's a live with an instructor where questions get worked through.
No. This guide is self-paced with no dates. The bootcamp is live, by cohort, with work someone reviews.
Start whenever you like
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