Python Class 9

Which of the following is invalid?

• _a = 1

• __a = 1

• __str__ = 1

• none of the mentioned

Which of the following is an invalid variable?

• my_string_1

• 1st_string

• __

What is the output of this expression, 3*1**3?

• 27

• 9

• 3

• 1

What input will I need to collect the height (in cm) of pupils in a class?

• float

• Int

• input

What does a variable do?

• Stores a value in memory

• Helps you print to screen

• It works out the maths

What would the answer be?

x = input("enter a number ")

print(x+x)

• 33

• 31

• error

What would be the answer?

a = "564"

b = "2342"

print(a+b)

• 2609

• 5642324

• 2906

What would happen here?

a = input ("enter a number")

b = int(input("enter a number"))

print (a+b)

• It would add the 2 numbers

• It would join the 2 numbers together

• There would be an error

The output of the code above will be

• 0

• 1

• 99

What is the output of the following code :

print(9//2)

• 4.5

• 4.0

• error

• 4