soloLearn variables

Variable

Lesson 14.1

What's the output of this code if the user enter '42' as input: age = int(input()) print(age+8)

50

Taking User Input

Lesson 16.1

Working with Input

Lesson 17.1

Input()

You can then provide a string to input() between the parentheses, producing a prompt message.

Variable Names

You can use letters, numbers, and underscores in variable names. But you can't use special symbols, or start the name with a number. Note: Python is a case sensitive language. Which means, Lastname and lastname are two different variable names.

What's the result of this code? x = "a" x *= 3 print(x)

aaa

Fill in the blanks to create a variable "age" and assign the value 42 to it: ____________=____________

age = 42

Input

input statement work, it needs to be followed by parentheses.

Input

input() multiple times to take multiple user inputs.

Fill in the blanks to prompt the user with a message and assign the input to the variable "name": __________=_________("_________")

name = input ("What is your name")

Fill in the blanks to take a name as input and output a Welcome message, containing the input? name =____________ _________("Welcome, "+________)

name = input() print ("Welcome," + name)

x = "spam" print(x) x += "eggs" print(x)

spam spameggs

Fill in the blank to take user input, assign it to a variable, and output it: text = _________ print(_________) Choice to pick from: input() text print user x

text = input() print(text)

When you go out to eat, you always tip 20% of the bill amount. But who's got the time to calculate the right tip amount every time? Not you that's for sure! You're making a program to calculate tips and save some time. Your program needs to take the bill amount as input and output the tip as a float. Sample Input 50 Sample Output 10.0

tip = bill *.2 y = int(tip)+17 print(float(tip))

Working with Variables Variables can be reassigned as many times as you want. Note: But Beware! Overwriting the same variable with different data types is not good practice. To avoid mistakes, try to avoid doing it.

x = 123.456 print(x) x = "This is a string" print(x + "!")

Fill in the blanks to declare a variable, add 5 to it and print its value. x = 4 x _____= 5 print ______

x = 4 x + = 5 print (x)

Drag the correct answer to output 12. x = 5 y =__________ print(x + y) choice "7" =7 7

x = 5 y = 7 print(x + y)

Working with Variables So, you've got your variable, and named it. You're now free to use them to perform corresponding operations, just as you do with numbers and strings. x = 7 print(x) print(x + 3) print(x)

x = 7 print(x) print(x + 3) print(x)

Fill in the blanks to produce a valid code, which takes the values of the x and y variables from the input and outputs their sum. x = int(______()) y =_______ (input()) print(x+_____)

x = int ( input ()) y = int ( input ()) print( x + y )

age = 42 print("His age is " + str(age))

His age is 42

What is the output of this code? x = 4 x *= 3 print(x)

12

What's the output of this code? x = 3 num = 17 print(num % x)

2

x = 2 print(x) x += 3 print(x) ___________________________________________________ Example Code x = 5 print(x) x +=10 print(x) Note if you do x and y it will print x, but adding to y will give you error in code variable must be the same x to x and y to y

2 5 _________________________________ Example Code 5 15

What will be the output of this code? x = "2" y = "4" z = int(x) + int(y) print(z)

6

What's the output of this code? spam = "7" spam = spam + "0" eggs = int(spam) + 3 print(float(eggs)) Choice 10.0 73.0 703

73.0

What's the output of this code? x = 5 y = x + 3 y = int(str(y) + "2") print(y) Why its 82 is 5 + 3 = 8 when plug into str(y) + "2" the number value isn't 10 for adding but combine together because "2" is a string thus become 82.

82

Variable

A variable lets you store a value by assigning it to a name. The name can be used to refer to the value later in the program. Note To assign a variable, use one equals sign example user = "James"

Which of these is a valid variable name in Python? a-variable%name A_VARIABLE_NAME 123

A_VARIABLE_NAME

In-Place Operators

Allow you to simplify codes Note: In-place operators can be used for any numerical operation (+, -, *, /, %, **, //). So many symbols, so many possibilities!

name = input("Enter your name:") print("Hello," + name) ____________________________________________________ Example Code name = input("Enter your name: ") print("and his name is John Cena da da da da, " + name)

Enter your name: Hello, _________________________________ Example Code Enter your name: and his name is John Cena da da da da,

Lesson 18.1

In-Place Operators

In-place operators

In-place operators let you write code like 'x = x + 3' more concisely, as 'x += 3'.

x = input() print(x) ____________________________________________________ Example Code x = input (900) print(900)

Note: Even if the user enter a number as input it's processed as a string. _________________________________ Example Code 900900

Module 3

Quiz

Input

The input function prompts the user for input, and returns what they enter as a string.

What's the output of this code? spam = "eggs" print(spam * 3) eggseggseggs spamspamspam "spamspamspam" when [spam * 3] spam is equal to eggs thus eggs is to the 3rd power because spam = eggs thus it time the eggs three time together

eggseggseggs