Test 2
dual alternative decision structure
2 possible path of an execution. 1 path is taken if true and another if it false. IF ELSE statements
In Python the ________ symbol is used as the equality operator.
==
Boolean expression was name after
English mathematician George Boole
not
The unary operation _________ inverts the value of its operand. Must be a boolean expression. Reverses the truth of its operand. The expression is true it will be false, if false it returns true.
A Boolean variable can reference one of two values which are
True or False
What is an example of a sequence structure
When everything executed from top to bottom
block
a set of statements that belong together as a group
What is y after the following statements are executed? x = 0 y = "red" if x > 0 else "blue"
blue
and
combines into one expression. BOTH must be true
or
combines into one expression. One or both can be true. doesnt matter which is true
What do bool data types allow you to do?
create variables that are true or false
relational operator
determines wether a specific relationship exists between 2 values (< > =)
The decision structure that has two possible paths of execution is known as
dual alternative
What is the result of the following Boolean expression, given that x = 5, y = 3, and z = 8?x < y and z > x
false
boolean expression
if statement tests an expression to determine whether true or false
control structure
logical design that controls the order in which a set of statements execute
What will print if x = 9? if x >= 10: print ("10 or larger")
nothing will print
single alternative decision structure
provides only one alternative path of execution
Which statement will give a random number between 1 & 5 inclusive (meaning only numbers 1 2 3 4 or 5)
random.randint (1, 5)
sequence structure
set of statements that execute in the order in which they appear
Conditionally executed
specific actions can only be accomplished if a certain condition exists
When is the best time to use the "or" operator
to determine whether the value is OUT of range
When is the best time to use the "and" operator?
to determine whether the value is in range
Expressions that are tested by the if statement are called Boolean expressions.
true
Flag
variable that signals when some condition exists in the program