Python Lesson Discussion 2-26-2025

Dropdown

A ​

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whose type is ​

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contains a number. The number can be positive, negative, or zero. It cannot have a ​

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Dropdown

​

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is short for ​

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. It is similar to an integer, except it ​

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have a decimal component.

Dropdown

A ​

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is created and updated in Python using an ​

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.

Multiple Choice

What will this code print?

• <class 'str'>

• str

• greeting

• Hello world

Multiple Choice

What will this print?

• <class 'int'>

• int

• 50

• my_number

Explanation Slide...

You can use the type function to determine a variable's type.It gives you a little more than you need to know, but you can find the type in single quotes after the word class.

Match

Match definitions with statements

• variable = value

• type(element)

• print(“text”)

Assigns a value to a variable name

Determines the type of an element

Prints entered text

• Assigns a value to a variable name

  
  

• Determines the type of an element

  
  

• Prints entered text

Multiple Choice

What type is the following variable?

x = "Hi there"

• float

• integer

• boolean

• string

Multiple Choice

What does the following Python program print?

• I am 6 feet tall

• I am6feet tall

• I am
  6
  feet tall

• x
  y
  z

Labelling

Label the statement

Drag labels to their correct position on the image

The prompt

function to receive input from user

variable name

Explanation Slide...

Dropdown

When using the input function, the program ​

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on the first line until the user presses the enter key.

Multiple Choice

What will this statement print?

• Age: 22

  22

  <class 'str'>

  
  

• Age:

• 22

• text

Multiple Choice

How to correct this?

• number = int(input("Number: "))

  print(number + 1)

  
  

• number = print(number + 1)

• print(number + 1)

Multiple Choice

On which line will this program call an error in the console?

• 1

• 2

• 3

• 4

Explanation Slide...

Line 2 will product the error. You cannot divide a str by an integer. You need to convert the user's input to an int.

Multiple Choice

Suppose you run the following Python program:

x = input("Enter some text: ") print(x)

While the program is running, after the prompt has been printed, the user types the following and presses Enter:
Delaware ratified the U.S. Constitution in 1787.
What does the program print?

• Delaware ratified the U.S. Constitution in 1787.

• Delaware ratified the U.S. Constitution in

• Delaware

• (The program does not print anything.)

Multiple Choice

What does the following Python program print?

x = 12 % 4

print(x)

• 0

• 1

• 3

• 4

Explanation Slide...

The modulus operator gives the remainder when dividing two values. Because 4 divides 12 evenly, there is no remainder, so 12 % 4 gives a value of 0.

Multiple Choice

What does the following Python program print?

x = 9 + 6 / 3 * 2 - 1

print(x)

• 9

• 15

• 21

• 12

Explanation Slide...

Python follows the order of operations so it divides 6/3 first (which equals 2), then multiplies 2*2 (which is 4), then adds 9 + 4 (which is 13) and then subtracts 1 (which is 12).

Dropdown

Adding two strings together is called ​

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. When you concatenate two strings, you put them side by side.

Multiple Choice

How do you correct this?

• print("a" + str(3))

• print("a" + 3))

• str(3))

Explanation Slide...

You can convert the integer into a string using the str function before adding it to a string.

Multiple Choice

Which of the following Python programs will not run?

Explanation Slide...

Python cannot concatenate variables of different types!

Multiple Choice

Which of the following is NOT a program that will produce the following output?

hellohellohello

Explanation Slide...

This code will print ‘hello’ each on a separate line

Multiple Choice

Which of the following is NOT a valid type of comment in Python?

• %% This is a comment

• # This is a comment

• " " "

  This is a comment

  " " "

Explanation Slide...

Great work! We can only use “”” for multiline comments and # for in-line comments.

Multiple Choice

Which of the following best describes the main purpose of comments?

• Comments create better spacing in programs.

• Comments describe your program so other people can read it more easily.

• Comments warn the people running the program about potential problems with the program.