Operators act on values, but the meaning depends on the types involved. Distinguish arithmetic, comparison, Boolean logic, assignment and identity.
Before you begin
Use a local Python environment and a small file or script. Read the error output carefully and keep sample records fictional.
Work through the idea
Begin with a tiny input whose answer you can calculate by hand. Write the expected result, implement the operation and compare the actual result. Add an empty or invalid input and state its handling explicitly. Keep input parsing separate from the main calculation where practical.
- Use explicit grouping for readability
- Compare values with equality
- Trace short-circuit conditions
Practice task
Evaluate a fictional discount rule based on membership and purchase amount.
Check your result
Show boundary values and explain why a condition is true or false.
A mistake to avoid
Do not use identity testing as a replacement for general value equality.
Keep a review note
Save the inputs or scenario, your reasoning and the result you checked. Explain one assumption and one case that needs more work. Revise the exercise after feedback and distinguish what you demonstrated from what remains untested.
Official reference for further study
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