Python for IGCSE CS

Every lesson runs in your browser — write real code, press Run, and the tasks check themselves. Free, no account needed, with notes in English and Chinese.

Start the course

Lessons in this course

1. 01 Sequence, input & output
2. 02 Variables, constants & data types
3. 03 Selection — IF and CASE
4. 04 Iteration — loops
5. 05 Totalling & counting
6. 06 Procedures & functions
7. 07 Validation & verification
8. 08 1-D arrays (lists)
9. 09 2-D arrays
10. 10 Searching & max / min
11. 11 Bubble sort
12. 12 Text files
13. 13 Databases & SQL
14. 14 Boolean logic & truth tables

Language reference

/know/reference/python