Exam 2

Question 1

boolean value

Answer 1

two possible values (true or false)

the expression results in true or false

Question 2

random module

Answer 2

random. random() - generate a random number between 0 and 1

random. randint(a,b)

Question 3

if statement

Answer 3

one way if statement

sometimes called the if block

Question 4

if-else statements

Answer 4

to way if statement because there are two sets of code only one of which will be executed

Question 5

nested if statement

Answer 5

nested is like russian nesting dolls

if statement within an if statement

Question 6

if-else-if statement

Answer 6

multiway (3 or greater)

if, elif, else:

Question 7

common errors dealing with the if-else statements

Answer 7

wrong indentation
misplaced else - (especially dealing with nested if statements)
using the wrong operator - (off by one error by using > instead of >=)
missing else

Question 8

logical operators

Answer 8

not, and, or

Question 9

Order of Operations

Answer 9

()
\+, - Unary
**
Not
*, /, //, %
\+, - binary
, >=
==, !=
and
or
assignment operators and augmented operators

Question 10

while loops

Answer 10

while count < 100:
print(“This is a message”)
count += 1

Question 11

common errors of while loops

Answer 11

infinite loops - (a loop that cannot end)

off by one error

Question 12

loop control

Answer 12

counter
sentinel value
user control

Question 13

for sequence

Answer 13

for in

Question 14

range function

Answer 14

range(0, 100, 2)

Question 15

Break command

Answer 15

break will exit a loop

Question 16

continue command

Answer 16

exits the current iteration and continues the loop

Question 17

stack and heap

Answer 17

used to organize programs while it’s executing

Question 18

stack stores

Answer 18

variables
parameters
references - an address that says where something is located

Question 19

how stack works

Answer 19

a function is pushed onto the stack and taken off when it’s finished
activation records are stacked on top of each other
only the top can be removed

Question 20

heap stores

Answer 20

objects

Question 21

void functions

Answer 21

returns none

none can be used as an object

Question 22

positional parameters

Answer 22

needs to come in order
needs to match the same number of formal parameters
needs to match type

Question 23

keyword parameters

Answer 23

can be used out of order the specific parameter is specified

Question 24

scope

Answer 24

places where the identifier can be used

Question 25

global variable

Answer 25

``` not declared in a function only accessible in the module or file ```

Question 26

local variable

Answer 26

is declared in a function | scope is the function

Question 27

Object Oriented Programming (OOP)

Answer 27

we use objects to reuse, organize, and simplify code

Question 28

method

Answer 28

``` function that is part of an object the data is already present in the object ```

Question 29

function

Answer 29

the data needs to be entered as a parameter