Engineering Questions with Answers - Multiple Choice Questions
Python MCQs
1 - Question
1. What is the type of each element in sys.argv?
a) set
b) list
c) tuple
d) string
View Answer
Answer: d
Explanation: It is a list of strings.
2 - Question
2. What is the length of sys.argv?
a) number of arguments
b) number of arguments + 1
c) number of arguments – 1
d) none of the mentioned
View Answer
Answer: b
Explanation: The first argument is the name of the program itself. Therefore the length of sys.argv is one more than the number arguments.
3 - Question
3. What will be the output of the following Python code?
def foo(k): k[0] = 1 q = [0] foo(q) print(q)
a) [0]
b) [1]
c) [1, 0]
d) [0, 1]
View Answer
Answer: b
Explanation: Lists are passed by reference.
4 - Question
4. How are keyword arguments specified in the function heading?
a) one-star followed by a valid identifier
b) one underscore followed by a valid identifier
c) two stars followed by a valid identifier
d) two underscores followed by a valid identifier
View Answer
Answer: c
Explanation: Refer documentation.
5 - Question
5. How many keyword arguments can be passed to a function in a single function call?
a) zero
b) one
c) zero or more
d) one or more
View Answer
Answer: c
Explanation: Zero keyword arguments may be passed if all the arguments have default values.
6 - Question
6. What will be the output of the following Python code?
def foo(fname, val): print(fname(val)) foo(max, [1, 2, 3]) foo(min, [1, 2, 3])
a) 3 1
b) 1 3
c) error
d) none of the mentioned
View Answer
Answer: a
Explanation: It is possible to pass function names as arguments to other functions.
7 - Question
7. What will be the output of the following Python code?
def foo(): return total + 1 total = 0 print(foo())
a) 0
b) 1
c) error
d) none of the mentioned
View Answer
Answer: b
Explanation: It is possible to read the value of a global variable directly.
8 - Question
8. What will be the output of the following Python code?
def foo(): total += 1 return total total = 0 print(foo())
a) 0
b) 1
c) error
d) none of the mentioned
View Answer
Answer: c
Explanation: It is not possible to change the value of a global variable without explicitly specifying it.
9 - Question
9. What will be the output of the following Python code?
def foo(x): x = ['def', 'abc'] return id(x) q = ['abc', 'def'] print(id(q) == foo(q))
a) True
b) False
c) None
d) Error
View Answer
Answer: b
Explanation: A new object is created in the function.
10 - Question
10. What will be the output of the following Python code?
def foo(i, x=[]): x.append(i) return x for i in range(3): print(foo(i))
a) [0] [1] [2]
b) [0] [0, 1] [0, 1, 2]
c) [1] [2] [3]
d) [1] [1, 2] [1, 2, 3]
View Answer
Answer: b
Explanation: When a list is a default value, the same list will be reused.