Practice Problems in Python [ Part - 1 ]

                                    Python

1. Write a program which will find all such numbers which are divisible by 3 but are not a multiple of 7,between 2000 and 3200 (both included).

soln : 

        def filter_numbers():

        """

        function to filter out numbers by extracting numbers

        which is divisible by 3 but not multiple of 7.

        """

        filtered_list=[]

        for i in range(2000, 3201):

            if (i%3==0) and (i%7!=0):

                filtered_list.append(str(i))

        print(','.join(filtered_list))

2. Write a program which can compute the factorial of a given numbers.

soln :

def fact(x):

"""

function to get factorial of given number

"""

    if x == 0:

        return 1

    return x * fact(x - 1)

x=int(raw_input())

print fact(x)

3. Write a program, which will find all such numbers between 1000 and 3000 (both included) such that each digit of the number is an even number.

soln : 

def even_digit_finder():

"""

function is to filter out numbers in 

which each digit is even number.

"""

even_digit_in_number = []

for i in range(1000, 3001):

    s = str(i)

    if (int(s[0])%2==0) and (int(s[1])%2==0) and (int(s[2])%2==0) and (int(s[3])%2==0):

        even_digit_in_number.append(s)

print(",".join(even_digit_in_number))

4. Write a program that accepts a sentence and calculate the number of letters and digits.

soln : 

def digit_character_counter():

"""

"""

sentence = input("enter sentence")

counter={"DIGITS":0, "LETTERS":0}

for character in sent:

    if character.isdigit():

        counter["DIGITS"]+=1

    elif character.isalpha():

        counter["LETTERS"]+=1

    else:

        pass

print("Total number of letters is {}".format(counter["LETTERS"]))

print("Total number of letters is {}".format(counter["DIGITS"]))

Learn Data Science Material which helps to learn concepts in Python, Statistics , Data Visualization, Machine Learning , Deep Learning. And it contains Projects helps to understand the flow of building model , and what are the necessary steps should be taken depending on the data set. Interview Questions helps to crack the interview. 

Data Science Material

Learn Python from basics to advanced. 

Python course

Join ML in python channel in telegram , Where you can learn every concepts in Python, Statistics, Data Visualization, Machine Learning, Deep Learning.

ML in Python

  

Join Aptitude Preparation channel in telegram , this channel helps to crack any interview.

Aptitude Preparation