Podcast
Questions and Answers
What are the five phases of creating a program that works correctly?
What are the five phases of creating a program that works correctly?
- Design the program, 2. Write the code, 3. Correct Syntax errors, 4. Test the program, 5. Correct logic errors.
What is a logic error?
What is a logic error?
An error in a program that makes it do something other than what the programmer intended. It does not prevent the program from running, but causes it to produce incorrect results.
What is debugging?
What is debugging?
Finding and fixing problems in your algorithm or program.
Define an algorithm.
Define an algorithm.
What is pseudocode?
What is pseudocode?
What are flowcharts used for?
What are flowcharts used for?
What are terminal symbols in flowcharts?
What are terminal symbols in flowcharts?
What does an input symbol indicate in a flowchart?
What does an input symbol indicate in a flowchart?
What does an output symbol indicate in a flowchart?
What does an output symbol indicate in a flowchart?
What do processing symbols represent in a flowchart?
What do processing symbols represent in a flowchart?
Who is a programmer's customer?
Who is a programmer's customer?
What is a software requirement?
What is a software requirement?
In Python, string literals must be enclosed in ________________________.
In Python, string literals must be enclosed in ________________________.
If you want a string literal to contain either a single-quote or apostrophe as part of the string, you can enclose the string literal in ________________________.
If you want a string literal to contain either a single-quote or apostrophe as part of the string, you can enclose the string literal in ________________________.
Python also allows you to enclose string literals in ________ ___________ when they contain both single and double quotes.
Python also allows you to enclose string literals in ________ ___________ when they contain both single and double quotes.
What are comments in programming?
What are comments in programming?
What character is used to begin a comment in Python?
What character is used to begin a comment in Python?
What is a variable?
What is a variable?
When a variable represents a value in the computer's memory, we say that the variable __________.
When a variable represents a value in the computer's memory, we say that the variable __________.
You use an ______________________ __________________ to create a variable and make it reference a piece of data.
You use an ______________________ __________________ to create a variable and make it reference a piece of data.
An assignment statement is written in this general format: ______
An assignment statement is written in this general format: ______
The = sign is known as the ______________ _______________.
The = sign is known as the ______________ _______________.
When you pass a variable as an argument to the print function, you do NOT enclose the variable name in ___________ _____________.
When you pass a variable as an argument to the print function, you do NOT enclose the variable name in ___________ _____________.
In an assignment statement, the variable that is receiving the assignment must appear on the ____________ side of the = operator.
In an assignment statement, the variable that is receiving the assignment must appear on the ____________ side of the = operator.
You cannot use a variable until you have __________ a value to it.
You cannot use a variable until you have __________ a value to it.
What are the variable naming rules?
What are the variable naming rules?
What is garbage collection?
What is garbage collection?
What is variable reassignment?
What is variable reassignment?
Python uses __________ to categorize values in memory.
Python uses __________ to categorize values in memory.
What classification does an integer fall under in Python?
What classification does an integer fall under in Python?
What classification does a real number fall under in Python?
What classification does a real number fall under in Python?
How does Python classify a number written directly in code?
How does Python classify a number written directly in code?
You cannot write __________, __________, __________ in numeric literals.
You cannot write __________, __________, __________ in numeric literals.
What does the 'str' data type represent in Python?
What does the 'str' data type represent in Python?
In Python, a __________ is just a name that refers to a piece of data.
In Python, a __________ is just a name that refers to a piece of data.
When a program reads data from the keyboard, usually it stores that data in a ____________.
When a program reads data from the keyboard, usually it stores that data in a ____________.
What are nested function calls?
What are nested function calls?
In a print statement, you can set the _____ argument to a space or empty string to stop the output from advancing to a new line.
In a print statement, you can set the _____ argument to a space or empty string to stop the output from advancing to a new line.
Which of the following statements about algorithms is NOT true?
Which of the following statements about algorithms is NOT true?
During testing, what errors can runtime testing expose?
During testing, what errors can runtime testing expose?
What is a string constant?
What is a string constant?
What is an empty string?
What is an empty string?
If a variable is associated with the value 'red', what would the code look like?
If a variable is associated with the value 'red', what would the code look like?
What is method invocation?
What is method invocation?
What expression can you use to calculate the amount of change from an integer price in cents?
What expression can you use to calculate the amount of change from an integer price in cents?
What expression can you use to find the last digit of an integer?
What expression can you use to find the last digit of an integer?
The character escape sequence to force the cursor to go to the next line is __________.
The character escape sequence to force the cursor to go to the next line is __________.
What does it mean that variables can reference different values?
What does it mean that variables can reference different values?
A numeric literal that is written as a _____________ ______________ with no decimal point is considered an int.
A numeric literal that is written as a _____________ ______________ with no decimal point is considered an int.
A numeric literal that is written as a ______________ _____________ is considered a float.
A numeric literal that is written as a ______________ _____________ is considered a float.
What function reads data from the keyboard?
What function reads data from the keyboard?
In the general format, _____________ is a string that is displayed on the screen.
In the general format, _____________ is a string that is displayed on the screen.
What is an exception in programming?
What is an exception in programming?
What are math operators?
What are math operators?
What does the '+' operator do in Python?
What does the '+' operator do in Python?
What does the '-' operator do in Python?
What does the '-' operator do in Python?
What does the '*' operator do in Python?
What does the '*' operator do in Python?
What does the '/' operator do in Python?
What does the '/' operator do in Python?
What does the '//' operator do in Python?
What does the '//' operator do in Python?
What does the '%' operator do in Python?
What does the '%' operator do in Python?
What does the '**' operator do in Python?
What does the '**' operator do in Python?
What are operands?
What are operands?
What is a mixed-type expression?
What is a mixed-type expression?
What is the line continuation character in Python?
What is the line continuation character in Python?
Python allows you to break any part of a statement that is enclosed in ________________ without using the line continuation character.
Python allows you to break any part of a statement that is enclosed in ________________ without using the line continuation character.
What is a newline character?
What is a newline character?
What does 'end=' ' mean in the print function?
What does 'end=' ' mean in the print function?
What does 'end=''' mean in the print function?
What does 'end=''' mean in the print function?
What does 'sep=''' do when passing multiple arguments to the print function?
What does 'sep=''' do when passing multiple arguments to the print function?
What is an escape character in Python?
What is an escape character in Python?
What does '
' represent in Python?
What does ' ' represent in Python?
What does ' ' do in Python?
What does ' ' do in Python?
What does ''' allow you to do in Python?
What does ''' allow you to do in Python?
What does ''' allow you to do in Python?
What does ''' allow you to do in Python?
What does '\' do in Python?
What does '\' do in Python?
What does string concatenation mean?
What does string concatenation mean?
What does the format function do in Python?
What does the format function do in Python?
What is a format specifier?
What is a format specifier?
What does '.2f' as a format specifier do?
What does '.2f' as a format specifier do?
What does 'e' mean in scientific notation format in Python?
What does 'e' mean in scientific notation format in Python?
What does the minimum field width specify when formatting numbers?
What does the minimum field width specify when formatting numbers?
How do you format integers using the format function?
How do you format integers using the format function?
What is a magic number?
What is a magic number?
Study Notes
Programming Process
- Creating a program involves five phases: design, write code, correct syntax errors, test, and correct logic errors.
Error Types
- Logic Error: A mistake that leads to unintended behavior without stopping the program, often due to mathematical errors.
- Debugging: The process of finding and fixing errors in an algorithm or program.
Algorithm and Programming Concepts
- Algorithm: A structured sequence of logical steps for performing a task.
- Pseudocode: A readable mix of informal programming structures and natural language used to outline algorithms.
Flowcharts
- Flowcharts: Visual diagrams representing the steps in a process; they detail the elements and their sequences.
- Terminal Symbols: Ovals in flowcharts denote the program’s starting and ending points.
- Input/Output Symbols: Parallelograms in flowcharts indicate input and output operations.
Programming Elements
- Variables: Named locations in memory for storing data; they can change values based on assignment.
- Assignment Statement: Syntax to create a variable and reference data; follows the format:
variable = expression
. - Garbage Collection: Mechanism that releases memory from variables no longer in use.
Data Types
- Numeric Types:
int
for integers andfloat
for real numbers; numeric literals cannot include currency symbols, spaces, or commas. - Strings: Sequences of characters stored as data, enclosed in single or double quotation marks, or triple quotes for mixed content.
Comments
- Comments: Notes in code for explanation, ignored by the interpreter; begin with
#
and can be end-line comments or multi-line.
Functions
- Function: Pre-written code that performs specific operations; executed by calling the function with appropriate arguments.
Input and Output
- Input Function: Reads data from the keyboard and returns it as a string.
- Print Function: Displays output; parameters like
end
andsep
control formatting.
Escape Characters
- Escape Characters: Special characters for achieving specific formatting in strings, such as:
\n
: Newline\t
: Horizontal tab\\
: Backslash
String Operations
- String Concatenation: Joining strings using the
+
operator.
Formatting Output
- Format Function: Handles numeric formatting with specifiers; including
'.2f'
for two decimal places. - Named Constants: Values that cannot be altered during program execution, helpful for managing fixed values.
Mixed-Type Expressions
- Expressions with operands of different data types are termed mixed-type expressions.
Special Considerations
- Variable Naming Rules: Variables must not include keywords, spaces, must start with a letter or underscore, and are case-sensitive.
- Handling Unexpected Errors: Exceptions occur when unhandled errors happen during program execution.
Miscellaneous
- Logic Testing: Ensuring the program performs as expected under various conditions to expose runtime errors.
Magic Numbers
- Magic Number: Unexplained numerical values in code; should be avoided for clarity.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz covers key concepts from Chapter 2 of 'Starting Out With Python'. Focused on program development phases and error types, it serves as a valuable study aid for understanding fundamental programming principles. Test your knowledge and reinforce your learning with these flashcards.