01
Professional Python, environments and typing
Explain and apply venv, dependency pinning, dataclasses, type hints, linting, project layout to a tested, privacy-safe solution.
- Professional Python, environments and typing60 min
← Course catalogue
SWE-230Intermediate
Software development
Python Flask Web & API Development
Turn Python skills into secure, testable web applications and lightweight APIs with Flask.
Part of these pathways
Course outline: enrolment opens after THNF content and assessment review.
What you will be able to do
Clear outcomes. Practical evidence.
- Structure a Flask application
- Validate requests
- Use templates and databases
- Test and deploy a service
Course structure
Modules and lessons
02
Advanced functions and data modelling
Explain and apply comprehensions, generators, decorators, closures, dataclasses, enums to a tested, privacy-safe solution.
- Advanced functions and data modelling60 min
03
Object-oriented design
Explain and apply encapsulation, composition, protocols, services, value objects to a tested, privacy-safe solution.
- Object-oriented design60 min
04
Persistence and repository patterns
Explain and apply SQLite, transactions, parameterised SQL, repository, migrations to a tested, privacy-safe solution.
- Persistence and repository patterns60 min
05
HTTP and API clients
Explain and apply HTTP methods/status, timeouts, retries, JSON, sessions, error mapping to a tested, privacy-safe solution.
- HTTP and API clients60 min
06
FastAPI application foundations
Explain and apply routes, schemas, dependency injection, validation, OpenAPI to a tested, privacy-safe solution.
- FastAPI application foundations60 min
07
Authentication and authorisation concepts
Explain and apply identity, password hashing, tokens, roles, least privilege to a tested, privacy-safe solution.
- Authentication and authorisation concepts60 min
08
pytest and test design
Explain and apply fixtures, parametrisation, mocks, integration tests, coverage, Arrange-Act-Assert to a tested, privacy-safe solution.
- pytest and test design60 min
09
Security, privacy and logging
Explain and apply secrets, validation, redaction, structured logs, OWASP basics, retention to a tested, privacy-safe solution.
- Security, privacy and logging60 min
10
Concurrency and background work
Explain and apply async/await, tasks, queues, idempotency, race conditions to a tested, privacy-safe solution.
- Concurrency and background work60 min
11
Deployment and operations
Explain and apply configuration, health checks, containers, process model, monitoring, backups to a tested, privacy-safe solution.
- Deployment and operations60 min
12
Capstone release
Explain and apply release criteria, versioning, documentation, evidence, demo to a tested, privacy-safe solution.
- Capstone release60 min
Access and progression
Know what the course requires.
The required capability matters; the learner does not have to personally own every device.
Who it is for
Aspiring developers, technical learners, career changers and practitioners seeking applied computing skills.
Hardware access
Personal 64-bit computer with 4 GB RAM and 20 GB free, or use the required device and software at a readiness-approved THNF centre.
Software and practical access
Course software is available through the text-first pack, an approved offline installer or a readiness-approved THNF centre.
Possible progression
Junior development, data, web, application-support or technical-project progression appropriate to the completed portfolio.
Progression is not a guarantee of employment or external certification.Sierra Leone context
Mobile-first, low-data solutions for Sierra Leonean schools, traders, transport, agriculture, NGOs and SMEs using synthetic local names, districts and NLe values.
Skills in context
Career directions and next steps
These are realistic directions that the skills can support—not promises of employment, job titles or external certification.
- Junior front-end developer
- Web-content assistant
- Freelance website builder
- Junior software developer
- Application-support assistant
- Software-testing assistant
Possible progression pathways
Beginner to intermediate web developer · Programming and software engineering