This set of Python Multiple Choice Questions & Answers (MCQs) focuses on “Function – 4”.
1. What is a variable defined outside a function referred to as?
a) A static variable
b) A global variable
c) A local variable
d) An automatic variable
View Answer
Explanation: The value of a variable defined outside all function definitions is referred to as a global variable and can be used by multiple functions of the program.
2. What is a variable defined inside a function referred to as?
a) A global variable
b) A volatile variable
c) A local variable
d) An automatic variable
View Answer
Explanation: The variable inside a function is called as local variable and the variable definition is confined only to that function.
3. What will be the output of the following Python code?
i=0 def change(i): i=i+1 return i change(1) print(i)
a) 1
b) Nothing is displayed
c) 0
d) An exception is thrown
View Answer
Explanation: Any change made in to an immutable data type in a function isn’t reflected outside the function.
4. What will be the output of the following Python code?
def a(b): b = b + [5] c = [1, 2, 3, 4] a(c) print(len(c))
a) 4
b) 5
c) 1
d) An exception is thrown
View Answer
Explanation: The function a(b) creates a new list with b = b + [5], so it does not modify the original list c. Since c remains unchanged with four elements, len(c) returns 4. If b.append(5) were used instead, it would modify c.
5. What will be the output of the following Python code?
a=10 b=20 def change(): global b a=45 b=56 change() print(a) print(b)
a)
10 56
b)
45 56
c)
10 20
d) Syntax Error
View Answer
Explanation: The statement “global b” allows the global value of b to be accessed and changed. Whereas the variable a is local and hence the change isn’t reflected outside the function.
6. What will be the output of the following Python code?
def change(i = 1, j = 2): i = i + j j = j + 1 print(i, j) change(j = 1, i = 2)
a) An exception is thrown because of conflicting values
b) 1 2
c) 3 3
d) 3 2
View Answer
Explanation: The values given during function call is taken into consideration, that is, i=2 and j=1.
7. What will be the output of the following Python code?
def change(one, *two): print(type(two)) change(1,2,3,4)
a) Integer
b) Tuple
c) Dictionary
d) An exception is thrown
View Answer
Explanation: The parameter two is a variable parameter and consists of (2,3,4). Hence the data type is tuple.
8. If a function doesn’t have a return statement, which of the following does the function return?
a) int
b) null
c) None
d) An exception is thrown without the return statement
View Answer
Explanation: A function can exist without a return statement and returns None if the function doesn’t have a return statement.
9. What will be the output of the following Python code?
def display(b, n): while n > 0: print(b,end="") n=n-1 display('z',3)
a) zzz
b) zz
c) An exception is executed
d) Infinite loop
View Answer
Explanation: The loop runs three times and ‘z’ is printed each time.
10. What will be the output of the following Python code?
def find(a, **b): print(type(b)) find('letters',A='1',B='2')
a) String
b) Tuple
c) Dictionary
d) An exception is thrown
View Answer
Explanation: b combines the remaining parameters into a dictionary.
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