15 Most Important Python Interview Questions | Python interview question for fresher

15 Most Important Python Interview Questions

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Let's start with the python interview questions data scientist. 

Question 1 -: What are Data types? What is Python Built-in Datatypes?

Solution -:  A data type specifies which type of a value a variable can store. Python has the following data types built-in by default -:

String, integer, float, complex Numbers, Boolean, Set, Dictionary, and Binary data types.

Question 2. Why are the following code giving errors-:

print(“hello”)

                    print(“greetings”)

          print(“how are you all”?

Solution. Inline 2 there is syntax error which is that, that the indentation is unexpected. 

          Same inline 3, also there is an error at the last where the Question mark is typed in place of Round bracket () .

Question 3. How is Keywords Different from Identifiers?

Solution 3. Identifiers are the name of any variable, constant, function or Module and Keywords are the words having specific meaning for interpreters, they cannot be used as Identifiers or for any other purpose. For example -:

Identifiers = abc , s12w , india_123 , swap etc.

Keywords= print , float , str , bool, else etc. 

Question 4. What are variables Why are they important in programs?

Solution 4. Variables play an important role in a program to make it flexible, rather than Entering the data directly into a program, a programmer cab use variables to represent the data.

>>> Math’s = 87

>>>print(Math’s)

87

>>> # so here Maths is a variable where we have assigned the value 87.

                           VARIABLE = VALUE

L-Value = refers to the left-hand side variable 

R-Value = refers to the Right-hand side value. 

Question 5. What are Mutable and Immutable Type Of Data? List Some of them? 

Solution 5, A Mutable Type of  data can be changed After it is created and Immutable type of data are those which cannot be changed if they are created. 

Mutable              Immutable

int                         Set                  

float                       List

str                          Dict

Question 6. What are Key Features of python?

Solution 6 .Features of Python is -:

1. Simple and Easy-: Python is a simple Language that is easy to learn.

2. Free and Open Source-: Anybody can use Python without purchasing a license.

3. High Level Language-: Being a high level language, it can be easily understood by the user without the need to be a concern with lower-level details.

4. Portable-: Python codes are machine and platform-independent.

5. Extensible and Embeddable-: Python program support the usage of C/C++ codes.

6. Standard Library-: Python standard library contains pre-written tools for programming.

check more Important Python Interview Questions. Python Interview Questions and answers for Testers also, Python interview questions javatpoint

Question 7. Identify the program -:

Solution 7-:  Tuple being immutable (which cannot be changed once created), an attempt to modify the element of a tuple yields an error. 

Question 8. What are the negative indices in List?

Solution 8. Accessing the elements from a List Right to Left is called the Negative Indexing.

You can write this example-:

0	1	2	3	4	5	6	7	Positive Indexing
C	O	M	P	U	T	E	R
-8	-7	-6	-5	-4	-3	-2	-1	Negative indexing

Question 9. Find and write the output of the following code -:

L=["jayes","ramya", "taruna","suraj"]

for i in L:

 print(L)

 if L[0]=='t':

                  break

 else:

           print("finished")

print("Got it")

Solution 9. 

['jayes', 'ramya', 'taruna', 'suraj']

finished

['jayes', 'ramya', 'taruna', 'suraj']

finished

['jayes', 'ramya', 'taruna', 'suraj']

finished

['jayes', 'ramya', 'taruna', 'suraj']

finished

Got it

b)

x=[1,2,3]

counter=0

while counter<len(x):

       print(x[counter]*'%')

       for y in x:

            print(y*'+')

       counter+=1

Solution-:

%

+

++

+++

%%

+

++

+++

%%%

+

++

+++

c)

x="apple pear peach"

y=x.split()

for z in y:

       if z<'m':

             print(str.lower(z))

       else:

             print(str.upper(z))

Solutions-:

apple

PEAR

PEACH

d)

for x in range(-500,500,100):

                 print(x)

Solution-:

 -500

-400

-300

-200

-100

0

100

200

300

400

Q.10 How will you capitalize the first letter of a string?

solution -: 

To capitalize the first letter of the string we use 

.title() after the string .

for example, if we want to capitalize the first letter of the " hello world "

then,

print("hello world".title()")

output-: Hello World

Q.1 1 We know Python is all the rage these days. But to be truly accepting of great technology, you must know its pitfalls as well. Would you like to talk about this? 

Solution-:

Of course, To be true Of course. To be truly yourself, you must be accepting of your flaws.

Only then can you move forward to work on them. Python has its flaws too:

1.    Python’s interpreted nature imposes a speed penalty on it.

2.     it is weak in mobile computing, and in browsers.

3.    Being dynamically-typed, Python uses duck-typing.

4.    This can raise run-time errors.

5.    Python has underdeveloped database access layers.

Q.12 Write a program that prints two columns in a table that helps to convert miles into kilometers.

Solutions

n=float(input("Enter the value in miles : "))

conversion= 0.621371

kilometers=n/conversion

print("Miles" , '\t',"Kilometers")

print(n,'\t',kilometers)

Output-:

Miles        Kilometers

5               8.046722489462816

Q.13 Find the output of the following programs-:

Dict = {1: 'Geeks', 'name': 'For', 3: 'Geeks'}

# accessing a element using key

print("Accessing a element using key:")

print(Dict['name'])

# accessing a element using key

print("Accessing a element using key:")

print(Dict[1])

Solution-:

Accessing an element using the key:

For

Accessing a element using key:

Geeks

Q.14 Consider the following dictionary-:

 VOTE={“BJP”:2500,”CONGRESS”:,2300,”AAP”:1800,”OTHERS”:1000} 

Write the complete program to print which national party has won the VIDHAN SABHA election 2018.

Solutions-:

VOTE={"BJP":2500,"CONGRESS":2300,"AAP":1800,"OTHERS":1000}

k=VOTE.keys()

seats=0

for i in k:

   m=VOTE[i]

   if m>seats:

      seats=m

      party=i

print("Winner is",party,"with ",seats,"seats")

15 What will be the output of the following code:   

  Values=[]

  for I in range(1,4):

           values.append(I)

           print(values)

Solutions-:

[1]

[1,2]

[1, 2, 3]

Q.16 Write a program to display the elements of list thrice if it is a number and display the element terminated with ‘#’ if it is not a number 

 For ex: 

LISt=[‘41’,”DROND”,”GIRIRAJ”,’13’,ZARA”]

 Output should be:

 414141

 DROND#

 GIRIRAJ# 

 131313 

 ZARA# 

Solution-:

L=['12','welcome','2','PROGCODE','6']

for i in L :

   if i.isdigit():

      print(i*3)

   else:

      print(i,'#')

Conceptual Question: 

Write a program to sort the elements(keys) from the dictionary and stored them in a LIST.

For ex:

D={3:”hello”,2:”Python",5:”programmer”,1:”Computer”}

After sorting keys will be in the order 1,2,3,5 should stored in the list L like [1,2,3,5]?

Solutions-:

d={2:'Progcode',1:'Piyush',3:'Python',4:'Java'}

dict=dict(sorted(d.items()))

print(dict)

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