Python Function MCQs

Question 1: What will be the output of the following code?

a=10
def myfunction():
    a=20
    return
print('a=',a)

Answer: B

The global variable's value remains unchanged. Variable inside the function is a local variable. Learn local and global variables in Python.

Question 2: What is not true about formal and actual parameters?

Answer: C

Parameter names used in the function definition are formal, hence they need not be the same as variables whose value is passed when the function is called. Their number and type however, must match. If used as keyword arguments, their order of definition can be different from the order of call. Learn Python Function.

Question 3: In Python, functions are

Answer: A

In Python, variables are just labels to objects in memory. Hence formal and actual argument variables point to the same object in memory. So, functions in Python are always called by passing reference. Learn Python Function.

Question 4: Variable used inside a function become its

Answer: A

The scope of a variable is limited by the context in which it is defined. Hence, a variable defined inside a function is not available for use outside it. So, it is a local variable. Learn Python Function.

Question 5: What is true about the docstring of a function?

Answer: D

If the first line in a function's body block is an optional string, it is not processed by Python interpreter, but acts as a docstring of the function object. Learn Python Function.