Using Programs with Data - AP Computer Science Principles

A sequence of characters. Text data type enclosed in quotes or apostrophes.

'def'. Keyword that declares new function definitions in Python.

Hello, World. Print function displays text exactly as written inside quotes.

function_name(arguments). Parentheses after name pass values to function parameters.

The number of items in an object. Built-in function counts elements in sequences and collections.

To repeat code while a condition is true. While loops continue until condition becomes false.

Use '==' for comparison, not '='. Assignment operator should be comparison operator for conditions.

Lists are mutable; tuples are immutable. Lists can be modified; tuples cannot be changed.

Boolean. Boolean data type represents logical values: True or False.

To encapsulate code for reuse and organization. Functions group code into reusable blocks with optional parameters.

It exits the function and optionally returns a value. Return sends a value back to the caller and stops execution.

Type error: mixing integer and string. Cannot add integer and string directly without type conversion.

variable_name = 0. Python uses assignment operator to create variables dynamically.

'**'. Double asterisk performs mathematical power operations.

Dictionary. Dictionaries map unique keys to corresponding values.

1. Floor division operator returns integer quotient without remainder.

To execute code conditionally based on a boolean expression. It evaluates the boolean and runs code only when true.

Adds an element to the end of the list. Append method inserts new item at list's final position.

No error; the function is correct. This function definition follows proper Python syntax rules.

A collection of elements identified by index. Arrays store multiple values accessible by numeric position.

To iterate over a sequence of items. For loops process each item in collections automatically.

Using '#'. Hash symbol creates single-line comments in Python code.

Loop condition or termination condition. This boolean expression controls when the loop continues or stops.

Missing colon after range(5). Python requires colon after for statement header.

'for' or 'while'. Both keywords create repetitive execution structures in Python.

1. Order of operations: parentheses first, then multiplication.

Dictionary. Dictionaries map unique keys to corresponding values.

'range()' is needed to iterate through integers. Cannot iterate directly over integer; range creates sequence.

To execute code when an 'if' condition is false. Else provides alternative code path for false conditions.