Podcast
Questions and Answers
Which of the following is not a step in the problem-solving process?
Which of the following is not a step in the problem-solving process?
- Implementation
- Design
- Debugging (correct)
- Analysis
What does the implementation step involve in the problem-solving process?
What does the implementation step involve in the problem-solving process?
- Creating an algorithm
- Writing and executing the application (correct)
- Defining requirements
- Testing the application
What essentially distinguishes high-level languages from machine languages?
What essentially distinguishes high-level languages from machine languages?
- High-level languages require fewer lines of code
- High-level languages are easier to understand and closer to natural languages (correct)
- High-level languages do not need translation to machine code
- High-level languages are executed directly by the CPU
What is the primary purpose of an assembler in programming?
What is the primary purpose of an assembler in programming?
Which characteristic is commonly associated with assembly language?
Which characteristic is commonly associated with assembly language?
How do high-level programming languages primarily differ from compiled languages?
How do high-level programming languages primarily differ from compiled languages?
Why was assembly language developed?
Why was assembly language developed?
What role does a compiler or interpreter play in relation to high-level programming languages?
What role does a compiler or interpreter play in relation to high-level programming languages?
What must be true about a program before it can be compiled in a compiled language?
What must be true about a program before it can be compiled in a compiled language?
Which characteristic is NOT true of Python?
Which characteristic is NOT true of Python?
In which programming paradigm are methods and data bundled together?
In which programming paradigm are methods and data bundled together?
What is the consequence of inconsistent indentation in Python?
What is the consequence of inconsistent indentation in Python?
Which of the following is a benefit of using functions in programming?
Which of the following is a benefit of using functions in programming?
What does the dynamic typing feature of a language allow?
What does the dynamic typing feature of a language allow?
Which of the following statements about procedural programming is true?
Which of the following statements about procedural programming is true?
What purpose does indentation serve in Python programming?
What purpose does indentation serve in Python programming?
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Study Notes
Problem Solving Process
- Consist of four steps: Analysis, Design, Implementation and Testing
- Analysis defines requirements and specifications
- Design develops an algorithm and forms a solution
- Implementation carries out the design and implements the solution
- Testing ensures the implementation meets requirements
Programming Languages
- Programming Languages are used to instruct computers to perform tasks
- Programming languages started with machine language, also known as machine code
- Machine Language is a collection of binary digits, 0s and 1s, and the only language that can be directly executed
- Assembly language was created to address the issues of machine language and requires an assembler to translate code
- High-level languages, like Python, are easier to write and understand and need a compiler or interpreter to translate them to machine code
- Compiled languages are translated into machine code before execution
- Interpreted languages are translated line by line until completion or an error occurs
- Static typing languages require type specification when creating a variable
- Dynamic typing languages do not require type specification
Programming Paradigms
- Programming paradigm is a way of organizing code within an application
- Procedural Programming divides a program into a set of procedures (routines or sub-routines)
- Object-Oriented Programming (OOP) divides a program into objects, which are constructed to form a solution
- OOP bundles methods (procedures) and data to form objects
Benefits of Using Functions
- Maintainability
- Reusability
- Simplicity
- Cleaner variable namespace
- Easier debugging
Characteristics of Python Language
- Python is an interpreted language
- Python is a dynamic language
- Python is case-sensitive
- Python requires assignment of a value to create a variable
Indentation in Python
- Indentation, the whitespace at the beginning of a line of code, determines the scope of a statement
- Consistent indentation is required for statements within the same scope.
- Indentation is essential for Python program logic
Boolean Expressions
- Boolean expressions evaluate to either True or False
- There are six relational operators: >, <, >=, <=, ==, !=
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