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Quiz: Variables and Data Types

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Number of Questions: 9

Question: 1 -

Please select the correct expression to reassign a global variable “x” to 20 inside a function fun1()

x = 50
def fun1():
    # your code to assign global x = 20
fun1()
print(x) # it should print 20

Options: 
  1. global x
x = 20

  2. global.x = 20

  3. global x =20

     

  4. global var x
x = 20
    5. Answer: 
    global x
x = 20
    Solution not available.

Question: 2 -

What is the data type of the following

aTuple = (1, 'Jhon', 1+3j)
print(type(aTuple[2:3]))

Options:

  1. complex

  2. int

  3. list

  4. tuple

    5. Answer:

    tuple
    Solution:

    When we access a tuple using the subscript atuple[start : end] operator, it will always return a tuple. We also call it tuple slicing. (taking a subset of a tuple using the range of indexes).

Question: 3 -

What is the data type of print(type(0xFF))

Options:

  1. hex

  2. int

  3. hexint

  4. number

    5. Answer:

    int
    Solution:

    We can represent integers in binary, octal and hexadecimal formats.

    • 0b or 0B for Binary and base is 2
    • 0o or 0O for Octal and base is 8
    • 0x or 0X for Hexadecimal and base is 16

Question: 4 -

What is the output of the following code

def func1():
    x = 50
    return x
func1()
print(x)

Options:

  1. 0

  2. 50

  3. None

  4. NameError

    5. Answer:

    NameError
    Solution:

    You will get a NameError: name 'x' is not defined. To access the function’s return value we must accept it using an assignment operator like this

    def myfunc():
    x = 50
    return x
x = myfunc()
print(x)

Question: 5 -

In Python 3, what is the output of type(range(5)). (What data type it will return).

Options:

  1. None

  2. range

  3. list

  4. int

    5. Answer:

    range
    Solution not available.