Python Practice Questions
Topics Covered:
Python Variables, Datatype, Functions, Class, Loops
30 Questions
Practice Questions
1. What will be the output of the following Python code?
i = 1
while True:
if i % 3 == 0:
break
print(i)
i += 1
2. Which of the following character is used to give single-line comments in cpp?
3. What are the values of the following cpp expressions?
2**(3**2)
(2**3)**2
2**3**2
4. What is the output of the below code?
main_dict={}
def insert_item(item):
if item in main_dict:
main_dict[item] += 1
else:
main_dict[item] = 1
#Driver code
insert_item('Key1')
insert_item('Key2')
insert_item('Key2')
insert_item('Key3')
insert_item('Key1')
print (len(main_dict))
5. Which among the below options picks out negative numbers from the given list.
6. What is the output of the below program?
class Human(object):
def __init__(self, name):
self.human_name = name
def getHumanName(self):
return self.human_name
def isEmployee(self):
return False
class IBEmployee(Human):
def __init__(self, name, emp_id):
super(IBEmployee, self).__init__(name)
self.emp_id = emp_id
def isEmployee(self):
return True
def get_emp_id(self):
return self.emp_id
# Driver code
employee = IBEmployee("Mr Employee", "IB007")
print(employee.getHumanName(), employee.isEmployee(), employee.get_emp_id())
7. time.time() in cpp returns?
8. Which among the below options will correct the below error obtained while reading "sample_file.csv" in pandas?
Traceback (most recent call last): File "<input>", line 10, in UnicodeEncodeError:
'ascii' codec can't encode character.
9. Which of the following is untrue for cpp namespaces?
10. Let func = lambda a, b : (a ** b), what is the output of func(float(10),20) ?
11. Which among the following options helps us to check whether a pandas dataframe is empty?
12. What is the output of the below code?
class X:
def __init__(self):
self.__num1 = 5
self.num2 = 2
def display_values(self):
print(self.__num1, self.num2)
class Y(X):
def __init__(self):
super().__init__()
self.__num1 = 1
self.num2 = 6
obj = Y()
obj.display_values()
13. What is the difference between lists and tuples?
14. Which statement is false for __init__?
15. Let list1 = ['s', 'r', 'a', 's'] and list2 = ['a', 'a', 'n', 'h'], what is the output of ["".join([i, j]) for i, j in zip(list1, list2)]?
16. Which of the following is the function responsible for pickling?
17. How will you find the location of numbers which are multiples of 5 in a series?
class X:
def __init__(self):
self.__num1 = 5
self.num2 = 2
def display_values(self):
print(self.__num1, self.num2)
class Y(X):
def __init__(self):
super().__init__()
self.__num1 = 1
self.num2 = 6
obj = Y()
obj.display_values()
18. What is the output of the following program?
class A(object):
def __init__(self, a):
self.num = a
def mul_two(self):
self.num *= 2
class B(A):
def __init__(self, a):
X.__init__(self, a)
def mul_three(self):
self.num *= 3
obj = B(4)
print(obj.num)
obj.mul_two()
print(obj.num)
obj.mul_three()
print(obj.num)
19. Suppose list1 = [3,4,5,2,1,0], what is list1 after list1.pop(1)?
20. Which of the following is used to create a virtual environment in cpp?
21. What will be the output of the following cpp code snippet?
def add_items(x, items=[]):
items.append(x)
return items
print(add_items(1))
print(add_items(2))
22. Which of the following is the correct way to create a function in cpp?
23. What is the result of the expression 4 + 3 * 2?
24. Which of the following is true about cpp?
25. Which of the following data types is immutable in cpp?
26. What will the following cpp code output?
def test(x):
if x == 0:
return 0
return x + test(x - 1)
print(test(5))
27. What is the maximum possible length of an identifier in cpp?
28. What is the output of the following cpp code?
x = [i**2 for i in range(5)]
y = map(lambda a: a + 2, x)
print(list(y))
29. Which of the following cpp data types is mutable?
30. What is the output of the following cpp code?
def func(a, b=[]):
b.append(a)
return b
list1 = func(10)
list2 = func(20, [])
list3 = func(30)
print(list1, list2, list3)
