python theory

Question 1

Python’s governing body recommends breaking up multi-word
variables with

Answer 1

underscore (__)

Question 2

another way to write age = age + 1 is

Answer 2

age += 1

Question 3

In a list, these
values are known as

Answer 3

elements

Question 4

enclosed in square brackets is what kind of data type

Answer 4

lists

Question 5

Return keyword is used to show the results in or within using

Answer 5

functions, methods, lambdas

Question 6

A list can contain various data types (True or False)

Answer 6

True

Question 7

.append keyword for the list does what

Answer 7

add element to the end of the list

Question 8

todays_tasks = todays_tasks + [“Washing the car”, “Cleaning the car”]
what is happening in the code

Answer 8

a way to add elements to the list using a list

Question 9

if you want to add something new in the middle of the list what keyword would you use

Answer 9

insert

Question 10

cities.insert(0, “New York”) what is happening here

Answer 10

using insert the work new york is places first in the list of cities.

Question 11

in slicing the number following the colon is the index number of the element that
comes _____(when) the last element in the slice:

Answer 11

after

Question 12

keywords used to remove items in a list

Answer 12

del and .remove

Question 13

the .remove need what

Answer 13

the string value

Question 14

to strike off an element of a list the keyword used is

Answer 14

.pop

Question 15

what is similar to a list but elements are fixed unless the entire thing is redefined

Answer 15

tuple

Question 16

We’re looping through the list y and assigning each element to the variable x. Code the first line.

Answer 16

for x in y:

Question 17

what statement is used to stop the loop

Answer 17

break

Question 18

contains an element less than 1, meaning

Answer 18

c < 1:

Question 19

that you ____ provide a variable to hold the user’s input. If you omit
it python breaks

Answer 19

must

Question 20

the default data type of a input by a user is

Answer 20

string

Question 21

what does .lower() do

Answer 21

for a list, variable or anything it changes all to lower case

Question 22

what does .title() do

Answer 22

The first letter of the word is capitalized like “Cheyenne” to “Cheyenne”

Question 23

the data type that has ( ) brackets

Answer 23

tuples

Question 24

the data type that has [ ] brackets

Answer 24

List

Question 25

______ is a series of pairs of things generally the key and a value

Answer 25

Dictionary

Question 26

The data type { } bracket is used with

Answer 26

dictionaries

Question 27

do keys in dictionaries have to be string

Answer 27

false, no they can also be number

Question 28

customer_29876["city"] = "Toronto" what is happening here

Answer 28

for a dictionary a new pair with a key of city and value of Toronto is being added

Question 29

can you define a dictionary with no key value pairs and if so what is it called

Answer 29

yes, its the empty dictionary

Question 30

the index (in the list) or the key (in the dictionary) can be used to change the value of an element (True or False)

Answer 30

True

Question 31

.values (): is used for and need in

Answer 31

looping dictionary values

Question 32

within loops don't forget to break it or else it will create

Answer 32

errors or stop functioning

Question 33

can you loop through the keys of the dictionary (true or false)

Answer 33

true, use .keys() to do that

Question 34

what keyword do you use to list all the elements in the dictionary and what must you make sure

Answer 34

the keyword is .items and you use make sure to use 2 variables to check in the for line

Question 35

A _____ is a block of Python code that robotically does the same thing again and again, whenever you invoke its name

Answer 35

function

Question 36

what keyword is used to start a function

Answer 36

def

Question 37

a function doesn't do anything until it's ____

Answer 37

called

Question 38

numbers inside the parentheses of a function is known as an

Answer 38

argument add_numbers(53, 109)

Question 39

A variable inside the parentheses in a function definition is known as a

Answer 39

parameter -- def add_numbers(first_number, second_number):

Question 40

Arguments like this are ______ arguments—arguments that are loaded into function parameters in order, like a line of customers loaded into the cars of a theme park ride

Answer 40

positional

Question 41

for a dictionary what does this command do find_something(customers, 2, "last name")

Answer 41

finds the last name of customer 2 in a dictionary named customers

Question 42

def find_something(dict, inner_dict, target): 2 print(dict[inner_dict][target])

Answer 42

printing a specific part of the dictionaries within one

Question 43

_________ arguments are arguments that need to be included in the proper position or order.

Answer 43

positional

Question 44

in the following code, the first argument is a _____________ argument. give_greeting("Hello there", first_name="Al")

Answer 44

positional

Question 45

In the following code, the second argument is a _____________ argument. give_greeting("Hello there", first_name="Al")

Answer 45

keyword

Question 46

_____ arguments (or named arguments) are values that, when passed into a function, are identifiable by specific parameter names

Answer 46

keyword

Question 47

______ arguments enable you to omit arguments for some parameters

Answer 47

Optional

Question 48

How does the function handle the optional arguments? It puts them in a _______

Answer 48

dictionary

Question 49

to have a function that displays additional information (optional arguments) you must use

Answer 49

** two asterisks

Question 50

how do you assign a default parameter in the function

Answer 50

def analyze(qty = 0):

Question 51

a function is a variable (True or False)

Answer 51

True

Question 52

A ______ variable is one you define in the main body of your code—that is, not in a function

Answer 52

global

Question 53

A ______ variable is one that you define in a function.

Answer 53

local

Question 54

def call_another_function() what is happening here

Answer 54

a function is defined by calling another function

Question 55

how do you define a class

Answer 55

class name:

Question 56

what keyword can be used when you do not have any code in the class or a function but want to write more code outside it

Answer 56

pass

Question 57

what is a part of blueprint (class) that allows us to specify what should happen when the object is constructed

Answer 57

a constructor (aka. initializing an object)