Intro to Python

Question 1

What is a variable?

Answer 1

Usually the first line of a code, programs use variables to remember information. Variables have content and names that tell us what’s inside.

Question 2

What do computers use variables for?

Answer 2

To remember information

Question 3

To create a variable, we start by typing its…

Answer 3

name.

Question 4

What do we use to create a multi-word name of a variable?

Answer 4

Snake Case. Snake case means using _ to connect additional words.

Question 5

What do we use snake case for?

Answer 5

To create variable names with multiple words.

Question 6

Why do variables have descriptive names like city or population instead of c or p?

Answer 6

To help us understand what’s inside of them.

Question 7

How often can we update the value of a variable?

Answer 7

As many times as we want.

Question 8

What type of value uses “ “ ?

Answer 8

Strings

Question 9

Describe a String Value.

Answer 9

A string value is text between double quotes.

Question 10

How do we know a value is a string?

Answer 10

It’s a text between double quotes, like “Liz is No. 1!”

Question 11

What’s happening in this code?

song_name = “Hey Ya!”

Answer 11

The variable song_name stores the value of “Hey Ya!”

Question 12

What’s the value of this variable?

hobby = “Tree Shaping”

Answer 12

“Tree Shaping”

Question 13

What does the special instruction print() do?

Answer 13

Print() tells the computer to display a value in the console.

Question 14

What is another name for the console?

Answer 14

The shell

Question 15

What’s the console?

Answer 15

An area that displays output from a code

Question 16

What’s the value of speed?

speed = 300 + 5

Answer 16

305

Question 17

Why does this code display 31 instead of in the console?

temperature = “3” + “1”
print(temperature)

Answer 17

Because “3” and “1” are string values

Question 18

How do we know that the score variable stores a number?

score = 40 + 4

Answer 18

Because there are no double quotes around 40 and 4.
The answer would be 44.

Question 19

What does this code display in the console?

area = “3 * 5”
print(area)

Answer 19

3 * 5

The variable stores a string, not numbers.

Question 20

What’s a good use for the values True and False?

Answer 20

Showing if a feature is switched on or off

Question 21

Why is “False” not the same as False?

Answer 21

There are quotes around it, so “False” is a string

Question 22

What is the negation operator?

Answer 22

not is the negation operator. It turns values into their opposite.

Question 23

What does the not operator do?

Answer 23

It turns True or False values into their opposite

Question 24

What do we call the not sign in front of True and False?

Answer 24

The not sign is the negation operator

Question 25

What is the equality operator?

Answer 25

The equality operator is ==

Question 26

What do we use to check if two numbers are equal?

Answer 26

== We use the equality operator.

Question 27

What do we use to check if a number is NOT equal to another number?

Answer 27

!= We use the inequality operator

Question 28

What allows us to display expressions like adding a strong to a number without an error?

Answer 28

F-strings (Formatted strings)

Question 29

What are the two parts of an f-string?

Answer 29

First the character f, then the string that we want to format.

Question 30

What do f-strings utilize to add a different kind of value in a string?

Answer 30

Curly braces { } can hold numbers, integers and floats within f-strings. Curly braces can also hold variable values.

Question 31

What are f-strings for?

Answer 31

For displaying different kinds of values together in a string.

Question 32

How do we display number values with f-string?

Answer 32

We place them between curly braces. { }

Question 33

How can we reuse an f-string we created?

Answer 33

We save it in a variable and use the variable.

Question 34

Why is first name not a valid variable name?

Answer 34

Because it contains a space between first and name.

Question 35

What is the = sign for?

Answer 35

It gives a value to a variable

Question 36

What's the result of using the == operator?

Answer 36

A value of either True or False.

Question 37

What do we use the > operator for?

Answer 37

To check if a number is greater than another number.

Question 38

What do we call the > sign?

Answer 38

The greater-than operator

Question 39

What do we call the < sign?

Answer 39

The less-than operator

Question 40

What do we use the < operator for?

Answer 40

To check if a number is less than another number.

Question 41

What do we use to check if a number is less than or equal to another number?

Answer 41

Use the less-than-or-equal to operator, <=

Question 42

What does >= do?

Answer 42

It checks if a number is greater than or equal to another number.

Question 43

What are integers?

Answer 43

Integers represent whole numbers without decimal places.

Question 44

What are floats?

Answer 44

Floats describe floating-point numbers with one or more decimal places after a point.

Question 45

What are booleans?

Answer 45

Booleans represent only two values: True and False.

Question 46

What are values like boolens, strings and numbers called?

Answer 46

Types

Question 47

What do we call whole numbers without decimal points?

Answer 47

Integers

Question 48

Which type is stored inside result? result = 3.33

Answer 48

A float

Question 49

What are boolean values?

Answer 49

True and False

Question 50

What is variable assignment?

Answer 50

Storing a value inside a variable.

Question 51

What function allows for information to be passed to the code?

Answer 51

input()

Question 52

What type must be used with the input() function?

Answer 52

The input is always of type string.

Question 53

What do we use the input function for?

Answer 53

To receive input from the user.

Question 54

What's the type of input we capture from the user?

Answer 54

All input from the user is treated as a string.

Question 55

What does the input() function do?

Answer 55

It reads a line from input and returns it as a string .