Free practice · boolean · medium
Practice
Understand Python range
In Python, list(range(1, 4)) is [1, 2, 3].
Python hand trace
Follow the statements that execute, one state change at a time
- InputsRecord initial values
- PathFollow indentation and branches
- StateRecord each assignment
- CallsBind arguments and trace returns
- OutputState the final observed value
- CheckRepeat the trace independently
A reliable prediction starts with inputs, respects indentation and control flow, records assignments, and separates returned values from printed output.