In Python, the most important data structures are List, Tuple, and Dictionary. So you should know how they work and when to use them. That’s why we brought these 30 Python programming questions on List, Tuple, and Dictionary in this blog post.
Also, with the help of these constructs, you can create robust and scalable Python applications. But it’ll require a thorough understanding of these features and their usage.
So before we go through the list of Python programming questions, it is essential to understand the difference between the triad.
But if you’re a serious learner, then you might also want to go through the following post.
💡 Recommended – Top 30 Questions to Read for Python Interview.
In next few lines, we’ll draw a comparison which will help you choose the best option depending on the situation.
A list, in Python, stores a sequence of objects in a defined order. They allow indexing or iterating through the list. Next, lists are mutable which you can modify after creation.
A tuple is though similar to a list, but it’s immutable. Another semantic difference between a list and a tuple is “Tuples are heterogeneous data structures whereas the list is a homogeneous sequence.“.
A dictionary is an associative array of key-value pairs. It’s unordered and requires the keys to be hashable. Search operations happen to be faster in a dictionary as they use keys for lookups.
Now, read the below questions and answer them carefully.
Python Programming Questions.
Quick Python Programming Questions.
Let’s begin with lists in Python.
Q-1. What will be the output of the following code snippet?
a=[1,2,3,4,5,6,7,8,9] print(a[::2])
A. [1,2]
B. [8,9]
C. [1,3,5,7,9]
D. [1,2,3]
Q-2. What will be the output of the following code snippet?
a=[1,2,3,4,5,6,7,8,9] a[::2]=10,20,30,40,50,60 print(a)
A. ValueError: attempt to assign sequence of size 6 to extended slice of size 5
B. [10, 2, 20, 4, 30, 6, 40, 8, 50, 60]
C. [1, 2, 10, 20, 30, 40, 50, 60]
D. [1, 10, 3, 20, 5, 30, 7, 40, 9, 50, 60]
Q-3. What will be the output of the following code snippet?
a=[1,2,3,4,5] print(a[3:0:-1])
A. Syntax error
B. [4, 3, 2]
C. [4, 3]
D. [4, 3, 2, 1]
Q-4. What will be the output of the following code snippet?
def f(value, values):
v = 1
values[0] = 44
t = 3
v = [1, 2, 3]
f(t, v)
print(t, v[0])A. 1 44
B. 3 1
C. 3 44
D. 1 1
Q-5. What is the correct command to shuffle the following list?
fruit=['apple', 'banana', 'papaya', 'cherry']
A. fruit.shuffle()
B. shuffle(fruit)
C. random.shuffle(fruit)
D. random.shuffleList(fruit)
Q-6. What will be the output of the following code snippet?
data = [[[1, 2], [3, 4]], [[5, 6], [7, 8]]]
def fun(m):
v = m[0][0]
for row in m:
for element in row:
if v < element: v = element
return v
print(fun(data[0]))A. 1
B. 2
C. 3
D. 4
E. 5
F. 6
Q-7. What will be the output of the following code snippet?
arr = [[1, 2, 3, 4],
[4, 5, 6, 7],
[8, 9, 10, 11],
[12, 13, 14, 15]]
for i in range(0, 4):
print(arr[i].pop())A. 1 2 3 4
B. 1 4 8 12
C. 4 7 11 15
D. 12,13,14,15
Q-8. What will be the output of the following code snippet?
def f(i, values = []):
values.append(i)
print (values)
return values
f(1)
f(2)
f(3)A. [1] [2] [3]
B. [1, 2, 3]
C. [1] [1, 2] [1, 2, 3]
D. 1 2 3
Q-9. What will be the output of the following code snippet?
arr = [1, 2, 3, 4, 5, 6]
for i in range(1, 6):
arr[i - 1] = arr[i]
for i in range(0, 6):
print(arr[i], end = " ")A. 1 2 3 4 5 6
B. 2 3 4 5 6 1
C. 1 1 2 3 4 5
D. 2 3 4 5 6 6
Q-10. What will be the output of the following code snippet?
fruit_list1 = ['Apple', 'Berry', 'Cherry', 'Papaya']
fruit_list2 = fruit_list1
fruit_list3 = fruit_list1[:]
fruit_list2[0] = 'Guava'
fruit_list3[1] = 'Kiwi'
sum = 0
for ls in (fruit_list1, fruit_list2, fruit_list3):
if ls[0] == 'Guava':
sum += 1
if ls[1] == 'Kiwi':
sum += 20
print (sum)A. 22
B. 21
C. 0
D. 43
💡 Recommended – Essential Python Coding Tips and Tricks for Programmers.
Let’s begin with tuples in Python.
Q-1. What will be the output of the following code snippet?
init_tuple = () print (init_tuple.__len__())
A. None
B. 1
C. 0
D. Exception
Q-2. What will be the output of the following code snippet?
init_tuple_a = 'a', 'b'
init_tuple_b = ('a', 'b')
print (init_tuple_a == init_tuple_b)A. 0
B. 1
C. False
D. True
Q-3. What will be the output of the following code snippet?
init_tuple_a = '1', '2'
init_tuple_b = ('3', '4')
print (init_tuple_a + init_tuple_b)A. (1, 2, 3, 4)
B. (‘1’, ‘2’, ‘3’, ‘4’)
C. [‘1’, ‘2’, ‘3’, ‘4’]
D. None
Q-4. What will be the output of the following code snippet?
init_tuple_a = 1, 2 init_tuple_b = (3, 4) [print(sum(x)) for x in [init_tuple_a + init_tuple_b]]
A. Nothing gets printed.
B. 4
C. 10
D. TypeError: unsupported operand type
Q-5. What will be the output of the following code snippet?
init_tuple = [(0, 1), (1, 2), (2, 3)] result = sum(n for _, n in init_tuple) print(result)
A. 3
B. 6
C. 9
D. Nothing gets printed.
Q-6. Which of the following statements given below is/are true?
A. Tuples have structure, lists have an order.
B. Tuples are homogeneous, lists are heterogeneous.
C. Tuples are immutable, lists are mutable.
D. All of them.
Q-7. What will be the output of the following code snippet?
l = [1, 2, 3]
init_tuple = ('Python',) * (l.__len__() - l[::-1][0])
print(init_tuple)A. ()
B. (‘Python’)
C. (‘Python’, ‘Python’)
D. Runtime Exception.
Q-8. What will be the output of the following code snippet?
init_tuple = ('Python') * 3
print(type(init_tuple))A. <class ‘tuple’>
B. <class ‘str’>
C. <class ‘list’>
D. <class ‘function’>
Q-9. What will be the output of the following code snippet?
init_tuple = (1,) * 3 init_tuple[0] = 2 print(init_tuple)
A. (1, 1, 1)
B. (2, 2, 2)
C. (2, 1, 1)
D. TypeError: ‘tuple’ object does not support item assignment
Q-10. What will be the output of the following code snippet?
init_tuple = ((1, 2),) * 7 print(len(init_tuple[3:8]))
A. Exception
B. 5
C. 4
D. None
💡 Recommended – Essential Python Optimization Tips and Tricks for Programmers.
Let’s begin with dictionaries in Python.
Q-1. What will be the output of the following code snippet?
a = {(1,2):1,(2,3):2}
print(a[1,2])A. Key Error
B. 1
C. {(2,3):2}
D. {(1,2):1}
Q-2. What will be the output of the following code snippet?
a = {'a':1,'b':2,'c':3}
print (a['a','b'])A. Key Error
B. [1,2]
C. {‘a’:1,’b’:2}
D. (1,2)
Q-3. What will be the output of the following code snippet?
fruit = {}
def addone(index):
if index in fruit:
fruit[index] += 1
else:
fruit[index] = 1
addone('Apple')
addone('Banana')
addone('apple')
print (len(fruit))A. 1
B. 2
C. 3
D. 4
Q-4. What will be the output of the following code snippet?
arr = {}
arr[1] = 1
arr['1'] = 2
arr[1] += 1
sum = 0
for k in arr:
sum += arr[k]
print (sum)A. 1
B. 2
C. 3
D. 4
Q-5. What will be the output of the following code snippet?
my_dict = {}
my_dict[1] = 1
my_dict['1'] = 2
my_dict[1.0] = 4
sum = 0
for k in my_dict:
sum += my_dict[k]
print (sum)A. 7
B. Syntax error
C. 3
D. 6
Q-6. What will be the output of the following code snippet?
my_dict = {}
my_dict[(1,2,4)] = 8
my_dict[(4,2,1)] = 10
my_dict[(1,2)] = 12
sum = 0
for k in my_dict:
sum += my_dict[k]
print (sum)
print(my_dict)A. Syntax error
B. 30
{(1, 2): 12, (4, 2, 1): 10, (1, 2, 4): 8}
C. 47
{(1, 2): 12, (4, 2, 1): 10, (1, 2, 4): 8}
D. 30
{[1, 2]: 12, [4, 2, 1]: 10, [1, 2, 4]: 8}
Q-7. What will be the output of the following code snippet?
box = {}
jars = {}
crates = {}
box['biscuit'] = 1
box['cake'] = 3
jars['jam'] = 4
crates['box'] = box
crates['jars'] = jars
print (len(crates[box]))A. 1
B. 3
C. 4
D. Type Error
Q-8. What will be the output of the following code snippet?
dict = {'c': 97, 'a': 96, 'b': 98}
for _ in sorted(dict):
print (dict[_])A. 96 98 97
B. 96 97 98
C. 98 97 96
D. NameError
Q-9. What will be the output of the following code snippet?
rec = {"Name" : "Python", "Age":"20"}
r = rec.copy()
print(id(r) == id(rec))A. True
B. False
C. 0
D. 1
Q-10. What will be the output of the following code snippet?
rec = {"Name" : "Python", "Age":"20", "Addr" : "NJ", "Country" : "USA"}
id1 = id(rec)
del rec
rec = {"Name" : "Python", "Age":"20", "Addr" : "NJ", "Country" : "USA"}
id2 = id(rec)
print(id1 == id2)A. True
B. False
C. 1
D. Exception
Summary – Python Programming Questions [List, Tuple, & Dictionary].
We tried to address some of the key Python programming constructs in this post with the help of 30 quick questions. Hope, you would’ve enjoyed them all.
In the next post, we’ll bring an another interesting topic on Python programming. Till then, enjoy reading and keep learning.
Best,
TechBeamers.
