Chapter one

Question 1

Run python and get it to display hello world

Do it via file as well

Answer 1

cmd
python
print(“Hello, World”)

new file
print(“hello world”)
save as hello.py
click run
start debugging
python

Question 2

What is the term print known as?

Answer 2

A function

Question 3

Create a variable called name, ask “what is your name?” and allow it to be input
Next, have the program say hello to you

Answer 3

name = input(“what is your name?” )
Space is intentional at end!
print (“Hello, “ + name”)

Question 4

What do you call it when text is added to a variable
Like when your name is added to the name variable?

Answer 4

It’s a string

Question 5

Create two variables and print them

What are the three ways to add spaces to the output so the variables aren’t together?

Answer 5

word1 = “hello “
word2 = “world
print(word1 + word2)

print(word1 + “ “ + word2)

or
space = “ “
print(word1 + space + word2)

Question 6

Give some examples of slicing

Answer 6

greeting = “Well, hello there!”
hello = [6:11]
print(hello)

or just
print(greeting[6:11])

Question 7

Via slicing, describe what this means: [6:11]

Answer 7

Everything after 6 up to and including 11

Question 8

What would these two do in terms of slicing
[:11]
[6:]

Answer 8

[:11] - From the beginning up to and including 11

[6:] - From after 6 to the end of the string

Question 9

What would these be called in python
3
3.1

Answer 9

3 - interger
3.1 - floating point number / float for short

Question 10

Create a program that takes the price of coffee that you input and gives you your total for everything

Answer 10

price = input(“What is the price of a cup of coffee? “)
cups = input(“How many cups do you want? “)
total = float(price) * int(cups)
print(“Your total is $” + str(total) + “ for “ + cups + “ cups”)

Question 11

How do you tell python that you’re creating a float, string, and interger

Answer 11

float(variable)
int(variable)
str(variable)

Question 12

What do you call it when you change something from a certain type like an interger, float, or string to another type

Answer 12

casting
In the end we are casting the total as a string

Question 13

Cast numbers from price and cups into another variable

Answer 13

price = input(“Price? “)
cup = input(“Cups? “)
total_price = float(price)
total_cup = int(cup)

Question 14

How would you create a comment?

Answer 14

#

Question 15

What is a newline and how do you create one

Answer 15

newline is a break
once you print something to the console it will automatically add one, but if you want to do it manually in the middle of your string, add \n like this:

print(“Hello,\nWorld”)
do two to add two breaks
print(“Hello, World\n\nHello, World”)

Question 16

Create a list and display something from it

Answer 16

grocery_list = [“fruit”, “milk”, “juice”, “hamburger”]
number = [1, 2, 3, 4]
print(“I need to buy “ + number[1] + grocery_list[0])

Question 17

what is the number called in the following list:
grocery_list[1]

Answer 17

index

Question 18

Create a tuple and explain why it is immutable

Answer 18

planets = (“Mercury”, “Venus”, “Earth”, “Mars”, “Jupiter”, “Saturn”, “Uranus”, “Neptune”)

A tuple is immutable which means its values can’t change unlike a list. This is faster and better for the security of a program if needed.

Question 19

Explain a set, make one, and show a neat way to organize it (you can do the same with tuples and lists

Answer 19

Sets delete duplicates and are contained in curly brackets
cool_dudes = {
“James Randy”,
“Bill Bundy”,
“Jim Jimmerson”,
“Derick Dondre”
}
Don’t forget your tab in between entries

Question 20

What does mutable mean?

Answer 20

editable

Question 21

Define a dictionary and then create one
Print only one of the keys for the screen.

Answer 21

Dictionaries cannot contain duplicates and also feature “key:value pairs”

customer1 = {
“name”: “Robert Cow”,
“occupation”: “Fart Worshiper”
“age”: 30,
“phone”: “812-888-8888”
}

print(customer1[“name”])

Question 22

Describe a boolean and then create one

Answer 22

Booleans can either be True or False
Answer1 = True
Answer2 = False

Question 23

create a multidimensional list, and then print a particular entry in one

Answer 23

list = [
[
[23, 45],
[82, 12]
]
[
[34, 18],
[41, 91]
]
]
print(list[1][1][0]