Lecture on Decision Structures and Boolean Logic

This set of flashcards covers key concepts from the lecture on decision structures and Boolean logic in Python programming, including if statements, relational operators, string comparisons, nested structures, and Boolean variables.

What is a control structure in programming?

A logical design that controls the order in which a set of statements execute.

What does the if statement do?

It performs specific actions only if a given condition is true.

How is the if clause structured in Python?

The syntax is: if condition: followed by statements.

What do relational operators determine?

They determine whether a specific relationship exists between two values.

What is the purpose of the if-else statement?

It provides two possible paths of execution depending on whether the condition is true or false.

How can strings be compared?

Strings can be compared using ==, !=, >,

What is a nested decision structure?

A structure where one decision block is placed inside another decision block.

What does the if-elif-else statement simplify?

It simplifies the logic of nested decision structures by allowing multiple conditions to be checked in a clearer format.

What are logical operators used for?

They create complex Boolean expressions by connecting two or more Boolean expressions.

What is short-circuit evaluation?

A method where the value of a compound Boolean expression is determined by evaluating only one sub-expression.

What does a Boolean variable represent?

It references one of two values, True or False, and is often used as a flag in programming.

What is an example of a condition checking if a value is within a range using logical operators?

x >= 10 and x <= 20.

What kind of structures have been covered in this chapter?

Single alternative, dual alternative, and nested decision structures.