Python-Recap 1

Which Python code segment will display “Hello, world!” on the screen?

• "Hello, world!"

• print "Hello, world!"

• print("Hello, world!")

• display Hello, world!

Answer explanation

The correct choice is 'print("Hello, world!")' because it uses the print function with parentheses, which is the proper syntax in Python 3 to display text on the screen.

What does the following Python code display?

print("Hello")

print("World")

• HelloWorld

• Hello

  World

• Hello World

• World

  Hello

Answer explanation

The code prints 'Hello' on one line and 'World' on the next line. Therefore, the output is 'Hello' followed by 'World', making the correct answer 'Hello' and 'World'.

What type is the following variable?

x = "Hi there"

• float

• integer

• boolean

• string

Answer explanation

The variable x is assigned the value "Hi there", which is enclosed in double quotes. This indicates that x is a string type, as strings are sequences of characters. Therefore, the correct answer is string.

What is the type of the variable x in the following Python program?

x = input("Enter something: ")

• integer

• string

• float

• boolean

Answer explanation

In Python, the input() function always returns data as a string, regardless of what the user enters. Therefore, the variable x will be of type string.

What can you use to make the user enter numbers?

• int(input("enter a number"))

• print(int("enter a number"))

• input("enter a number")

• int(input "enter a number")

Answer explanation

The correct choice, int(input("enter a number")), combines input() to prompt the user and int() to convert the input string to an integer, ensuring the user enters a number. The other options are incorrect or incomplete.