Python Tutorilas | Python Interview Questions | Session - 1 | by Durga Sir

Python Tutorilas | Python Interview Questions Session - 1 | by Durga Sir

[kvgraphics]

Q1: DIFFERENCE BETWEEN "IS" AND "==" OPERATOR IN PYTHON.

IS -->is operator is used to refering the two variables to the same object(Simplt it is identity operator.)
== --->is used to compare two objects(simply it is a Equality operator)

Q2: TERNARY OPERATOR or CONDITIONAL OPERATOR:

Way of writing simple if/else statements in a single line(with 3 orguments).
syntax: x= a if (condition) else b
if condition is True x=a otherwise x=b

Q3: DATA TYPES:
1)int
2)float
3)str(string)
4)complex
5)bool
6)list
7)tuple
8)dict
9)bytearray
10)bytes
11)range..etc

Q4: MUTABLE AND IMMUTABLE OBJECTS
Mutable:
*posible to do modifications once creation of an object.
ex: list, dictionary, set .
Note: if we try to do modifications we will get an "type error".
Immutable:
*Imposible to do modifications once creation of an object.
ex: Tuple, string, range.


Q5: IN PYTHON WHICH OBJECTS ARE MUTABLE AND WHICH OBJECTS ARE IMMUTABLE?

Mutable Objects:
1)list
2)dict
3)bytearray
4)set..etc

Immutable Objects:
1)int
2)float
3)str(string)
4)complex
5)bool
6)frozenset
7)bytes

Note:All fundamental data types are immutable.

Q6: **** DIFFERENCE BETWEEN LIST AND TUPLE: ****
List:
-->List is group of comma seperated values with in square brackets and square brackets are mandatory.
* List is an mutable object simly we can do any kind of modifications.
ex: l=[10, 20, 30]
--->List riquires more memory space.
--->List objects are won't reusable.
--->The performance of list is low, i.e, the operation of list object take more time.
---> Comprehension concept is applicable for List .
--->List objects are ""unhashable type"" . so we can't store in set and in dict as keys.

ex: s={10, 20, 30, [40, 50]}
print(S)
o/p: TypeError: unhashable type: 'list'.
ex: s={[40, 50]:"jaya"}
print(S)

o/p: TypeError: unhashable type: 'list'.
--> Unpacking is possible in list but packing is not possible .
Tuple:
--->Tuple is a group of comma seperated values with in a paranthesis and paranthesis are optional.
*Tuple is an immutable object and we can't do any kind of modifications once creation of objects.
ex: t=(10, 20, 30, 40, 50)
t=10, 20, 30, 40, 50
---->Tuple riquire less memory space.
---->Tuple objects are reusable
---> The performance of list is high, i.e, the operation of list object take less time.
---> Comprehension concept is not applicable in Tuple.
---> Tuple objects are """hashable type""" so we can store in set and in dict as keys.
ex:s=(10, 20, 30, [40, 50])
print(S)
o/p: (10, 20, 30, [40, 50])
--> both packing and unpacking is possible in tuple.


Example for memory storage in list and tuple:

import sys
l=[10, 20, 30, 40, 50]
t=(10, 20, 30, 40, 50)
print("The size of List is :", sys.getsizeof(l))
print("The size of Tuple is:", sys.getsizeof(t))

o/p: The size of List is : 88
The size of Tuple is: 80


Example for object reusable in List and python:

l1=[10, 20, 30, 40, 50, 60, 70, 80, 90, 100]
l2=[10, 20, 30, 40, 50, 60, 70, 80, 90, 100]

t1=(10, 20, 30, 40, 50, 60, 70, 80, 90, 100)
t2=(10, 20, 30, 40, 50, 60, 70, 80, 90, 100)
print(id(l1))
print(id(l2))
print(id(t1))
print(id(t2))

o/p:2869878896000 #list object take different object location.
2869834003584

2869874051648 #tuple object use same object location.
2869874051648




😀😀GIVE LEFT AND RIGHT TO INTERVIEWER IF ASK THESE QUESTIONS....

[venkatathanooj]

Thank you sir for your love towards students for providing always best concepts through videos at the correct Time. I am waiting for the part-2

[mareboinaravi]

He is a legend. That's why we still(2021) watching his videos and joining ur institutes.

[Anand_Acharya]

Sir you are amazing...
Your methods are directly going in my mind.

[MrRahulmaitra]

>>> t2 = (10, 20, 30, 40, 50, 60, 70, 80, 90, 100)
>>> t1 = (10, 20, 30, 40, 50, 60, 70, 80, 90, 100)
>>> print(id(t1))
140411054539552
>>> print(id(t2))
140411054539984

for same values I am getting different id location....please explain(both python2 and 3 same output)

[artcraftsdecoration]

What is meant by left n right.. Sir said in all session 😀

[rakeshnagarajan]

Is there any blog. It's hard to hear your voice and slang

[dpbekkanti]

sir...plz upload django interviw question

[GauravSharma-blxq]

sir, please provide the pdf of content and wonderful experience with learning for you

[kota.]

Sir can we get those interview questions and answers pdf?? Plzz it's a request to share those

[IndoriTrader]

set data type is mutable and immutable.

[rahultiwari]

Sir can you please share the file as well?

[ajtech]

sir, where is the pdf of that session

[MrMeghesh]

I want pdf file for those questions and answers