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(b) Inheritance: (ii) Use frameworks like unittest
(i) Use inheritance to avoid code or pytest.
duplication.
(ii) Example: classSavings (b) Integration tests: Chapter Five: Object oriented programming with Java
Account(BankAccount). (i) Test the interaction between
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different modules.
(c) Composition: (ii) Ensure that components work
(i) Combine simple objects to together as intended.
create complex ones.
(ii) Example: A User class 2. Debugging
containing multiple (a) Print statements: Use for quick
BankAccount objects.
checks on variable values and
Stage Three: Implementing the project program flow.
1. Coding (b) Debugging tools:
Write code: (i) pdb: Python’s built-in
(i) Implement classes and debugger for step-by-step
methods as outlined in the execution.
design document. (ii) IDEs: Use features in IDEs
(ii) Follow coding standards like PyCharm or VSCode for
for readability and setting breakpoints.
maintainability.
3. Common techniques
2. Modular development (a) Syntax errors: Carefully review
(a) Build and test: Develop each error messages and correct typos.
module separately, ensuring (b) Logic and control flow: Ensure
it functions correctly before the program logic is sound and
integrating. flow is logical.
(b) Advantages: (c) Exception handling: Gracefully
(i) Easier debugging and testing. handle potential errors using try-
(ii) Enhances code reusability. except blocks.
Stage four: Testing and debugging Example: Imagine you are a programmer
1. Testing and want to develop an application
(a) Unit tests: Library management systems. Use the
described stages to show how you can
(i) Test individual functions or undergo.
methods.
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Student’s Book Form Five
Computer Science Form 5.indd 377 23/07/2024 12:34
