Python Revision

Which is a comment?

• " this is a comment "

• # this is a comment

• this is a comment

• # this is a comment #

Answer explanation

Comments start with a #. " initiates a string.

Find the invalid name for a variable

• My_name

• myName

• 1Name

• My Name

• @MyName

Answer explanation

A variable can't have spaces between the words and numbers or symbols at the start.

Which code will not generate an error?

• Firstname = input()

  print("Hello,",firstname)

• firstname = input()

  print("Hello," firstname)

• firstname = input()

  print("Hello," ,firstname)

• firstname = input ()

  print("Hello, firstname")

Answer explanation

This code is using concatenation!

Which code will print "h"?

• planet = "Earth"

  print(planet[5])

• planet = "Earth"

  print(planet[4])

• planet = "Earth"

  print(planet,[4])

• planet = "Earth"

  print(planet,[5])

Answer explanation

Python codes always start counting at 0!

What will this code print out? number = "5" + "10"

print(number)

• 15

• 5 10

• 510

• An error

Answer explanation

This code is a string and it will only print out 5 and 10 like 510. If you wanted it to be 15 then you wouldn't put the " ".

Which data type...

Holds alphanumeric data as texts

• String

• Float

• Integer

• Boolean

Answer explanation

It's a string!

Strings are represented in code as....

• str

• int

• float

Answer explanation

Which data type...

holds whole numbers

• string

• boolean

• integer

• float

Integers are represented in code as....

• int

• float

• str

Which data type...

holds numbers with a decimal point

• integer

• string

• float

• boolean