Getting started with Python
print(), comments and running a script
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Python Foundations
12 original, bite-sized lessons taking you from your first program to functions, files and testing. Each includes code you can download, a challenge, a debugging task and a quick self-check.
Suitable for beginners, KS3 and GCSE students. Broader than either individual exam specification; follow alongside your OCR or AQA topic pathway.
New GCSE course: Nine guided Python programming lessons with original challenges and tested downloads →
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Variables and data types
Assignment, strings, integers, floats and booleans
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Input and type conversion
input(), int(), float() and validation
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Selection with if
Conditions, comparisons and if/elif/else
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Boolean logic
Combining conditions with and, or and not
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Count-controlled loops
for loops and range()
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Condition-controlled loops
while loops, sentinels and avoiding infinite loops
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Lists and indexing
List creation, traversal and updating
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Strings and formatting
Character indexing, slices and formatted output
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Subroutines and parameters
Defining functions, arguments and return values
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Working with text files
Writing, reading and with-open blocks
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Testing and debugging
Normal, boundary and invalid data; trace and fix
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New: Interactive Python code tracing and debugging
Step through worked code examples and try original GCSE and A-level output and debugging quizzes.
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