Essential Knowledge Questions

1. What is a variable

abstraction inside program that holds value>associated data storage that rep. single value at a time

2. What is the best type of data to represent someone's dog's name

variable

3. Why is it important to give variables specific names before containing values

call them while coding

4. What is the best way to print someone's phone number

string

5. Explain what an assignment operator is

the equal sign in coding

6. In Collegeboard pseudocode, what symbol is used to assign values to variables?

"<--"

7. A variable, x, is initially given a value of 15. Later on, the value for x is changed to 22. If you print x, would the command display 15 or 22?

It will display 22

8. What is a list

sequence of elements with each one (element) being a variable

9. What is an element

items in a list

10. What is an easy way to reference the elements in a list or string

print

11. What is an example of string

"Hello World"

List Examples

thanksgivingList = ["cranberry pie", "casserole", "mashed potatoes", "turkey"]
print(thanksgivingList)

['cranberry pie', 'casserole', 'mashed potatoes', 'turkey']

Create a list

namelist = ["Luna", "Ethan", "Taiyo", "Parav", "Nikhil"]
# printing the end
print(namelist)

['Luna', 'Ethan', 'Taiyo', 'Parav', 'Nikhil']

name = "Luna"
food = ["grapes", "apples","bananas"]
print(name, food)

Luna ['grapes', 'apples', 'bananas']

food = ["grapes", "apples","bananas"]
print(food[1])
print(food[-1])

apples
bananas

Variables

age = "16"
name = "Luna"

print(name + " is " + age)

Luna is 16

Number Input

num1=input("Input a number. ")
num2=input("Input a number. ")
num3=input("Input a number. ")
add=input("How much would you like to add? ")

# Add code

numlist = [int(num1), int(num2), int(num3)]
# shows the original numbers to the user
print("Original->",numlist)
# add the new number to the original input
print("Add->",add)

# code that adds the inputted addend to the other numbers

for i in range(len(numlist)):
    numlist[i -1] += int(add)

print("New->",numlist)

Original-> [10, 20, 30]
Add-> 4
New-> [14, 24, 34]

Python Quiz

import getpass, sys

def question_with_response(prompt):
    print("Question: " + prompt)
    msg = input()
    return msg

questions = 4
correct = 0

print('Hello, ' + getpass.getuser() + " running " + sys.executable)
print("You will be asked " + str(questions) + " questions.")
question_with_response("Are you ready to take a test?")

rsp = question_with_response("The purpose of lists and dictionaries are to manage the ____ of a program")
if rsp == "complexity":
    print(rsp + " is correct!")
    correct += 1
else:
    print(rsp + " is incorrect!")

rsp = question_with_response("Lists are a form of data ______")
if rsp == "abstraction":
    print(rsp + " is correct!")
    correct += 1
else:
    print(rsp + " is incorrect!")

rsp = question_with_response("Which brackets are used to assign values to a variable to make a list?")
if rsp == "[]":
    print(rsp + " is correct!")
    correct += 1
else:
    print(rsp + " is incorrect!") 

print(getpass.getuser() + " you scored " + str(correct) +"/" + str(questions))

Hello, lunaiwazaki running /Library/Developer/CommandLineTools/usr/bin/python3
You will be asked 4 questions.
Question: Are you ready to take a test?
Question: The purpose of lists and dictionaries are to manage the ____ of a program
complexity is correct!
Question: Lists are a form of data ______
abstraction is correct!
Question: Which brackets are used to assign values to a variable to make a list?
[] is correct!
lunaiwazaki you scored 3/4

Simplify Foods

food1 = "pizza" 
food2 = "hot dog" 
food3 = "sushi"
food4 = "strawberry"
food5 = "sandwich"
print(food1, food2, food3, food4, food5)

pizza hot dog sushi strawberry sandwich

food = ["pizza", "hotdog", "sushi", "strawberry", "sandwich"]
# change all the foods to share a list and use brackets
print(food)

['pizza', 'hotdog', 'sushi', 'strawberry', 'sandwich']

color = ["red", "orange", "yellow", "green", "blue"]
# change all foods to color
print(color)

['red', 'orange', 'yellow', 'green', 'blue']