This is CS50

CS50 Web: Web Programming with Python and JavaScript

OpenCourseWare

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  • Weeks
  • Week 0: HTML and CSS
  • Week 1: Git
  • Week 2: Python
  • Week 3: Django
  • Week 4: SQL, Models, and Migrations
  • Week 5: JavaScript
  • Week 6: User Interfaces
  • Week 7: Testing, CI/CD
  • Week 8: Scalability and Security
  • Problem Sets
  • Problem Set 0
  • Problem Set 1
  • Problem Set 2
  • Problem Set 3
  • Problem Set 4
  • Language
  • English
  • Tiếng Việt
  • 中文
  • License

Problem Set 2

What to Do

  • Submit Commerce

When to Do It

By 2026-12-31T23:59:00+00:00.

How to Get Help

  1. Ask questions via Ed!
  2. Ask questions via any of CS50’s communities!