7 Tricky Python Interview Questions

Here’re the python interview questions asked in Capgemini. The questions are a little tricky but not complex.

Python interview questions

#1. Can we give duplicate keys in the dictionary? and what’s the output for the below scenario?

As a rule, duplicate keys are not allowed. The result of the below scenario is the value will be the last one.

Scenario:

dict= {“a”: 1, “b”:2, “a”:5}
print(dict[“a”])

Output

** Process exited – Return Code: 0 **
Press Enter to exit terminal

#2. How to merge three lists in python?

You can resolve it by using the ZIP method.

Scenario:

a=[1,2,3]

b=[3,4,5]

c=[6,7,8]

new_list=zip(a,b,c)

print(list(new_list))

Output

[(1, 3, 6), (2, 4, 7), (3, 5, 8)]

** Process exited – Return Code: 0 **
Press Enter to exit terminal

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#3. How to print even numbers ( 1 to 100) using the python lambda function?

Scenario:

even = lambda x : x*2

for a in range(1,100):
if (even(a) <=100 ):
print(even(a))

Output

2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100

** Process exited – Return Code: 0 **
Press Enter to exit terminal

#4. Why tuple is faster than a list?

Since a tuple is immutable and stored in a single memory block. So tuple is faster than a list.

#5. What is memory management in python?

The garbage collector automatically releases unused objects in one way. The other way is it follows dynamic memory allocation.
Memory management in Python involves a private heap containing all Python objects and data structures. The Python memory manager has different components which deal with various dynamic storage management aspects, like sharing, segmentation, preallocation, or caching.
The management of the Python heap is performed by the interpreter itself and the user has no control over it.

#6. What are the popular packages and frameworks in python?