﻿ ﻿PYTHON PROGRAMS - Complete Guide For Python Programming (2015)

# Complete Guide For Python Programming (2015)

### PYTHON PROGRAMS

Python Program to Add Two Matrices

# Program to add two matrices

# using nested loop

X = [[12,7,3],

[4 ,5,6],

[7 ,8,9]]

Y = [[5,8,1],

[6,7,3],

[4,5,9]]

result = [[0,0,0],

[0,0,0],

[0,0,0]]

# iterate through rows

for i in range(len(X)):

# iterate through columns

for j in range(len(X)):

result[i][j] = X[i][j] + Y[i][j]

for r in result:

print(r)

Output:

[17, 15, 4]

[10, 12, 9]

[11, 13, 18]

Python Program to Add Two Numbers

# This program adds two numbers

# Numbers are provided by the user

# Store input numbers

num1 = input('Enter first number: ')

num2 = input('Enter second number: ')

sum = float(num1) + float(num2)

# Display the sum

print('The sum of {0} and {1} is {2}'.format(num1,num2,sum))

Output:

Enter first number: 5.3

Enter second number: 3.3

The sum of 5.3 and 3.3 is 8.6

Python Program to Calculate the Area of a Triangle

# Python Program to find the area of triangle

# Three sides of the triangle

# a,b,c are provided by the user

a = float(input('Enter first side: '))

b = float(input('Enter second side: '))

c = float(input('Enter third side: '))

# calculate the semi-perimeter

s = (a + b + c) / 2

# calculate the area

area = (s*(s-a)*(s-b)*(s-c)) ** 0.5

print('The area of the triangle is %0.2f' %area)

Output:

Enter first side: 5

Enter second side: 6

Enter third side: 7

The area of the triangle is 14.70

Python Program to Check Armstrong Number

# Python program to if the

# number provided by the

# user is an Armstrong number

# or not

# take input from the user

num = int(input("Enter a number: "))

# initialise sum

sum = 0

# find the sum of the cube of each digit

temp = num

while temp > 0:

digit = temp % 10

sum += digit ** 3

temp //= 10

# display the result

if num == sum:

print(num,"is an Armstrong number")

else:

print(num,"is not an Armstrong number")

Output 1

Enter a number: 663

663 is not an Armstrong number

Output 2

Enter a number: 371

407 is an Armstrong number

Python Program to Check if a Number is Odd or Even

# Python program to check if

# the input number is odd or even.

# A number is even if division

# by 2 give a remainder of 0.

# If remainder is 1, it is odd.

num = int(input("Enter a number: "))

if (num % 2) == 0:

print("{0} is Even".format(num))

else:

print("{0} is Odd".format(num))

Output 1

Enter a number: 73

73 is Odd

Output 2

Enter a number: 24

24 is Even

Python Program to Check if a Number is Positive, Negative or Zero

# In this python program, we input a number

# check if the number is positive or

# negative or zero and display

# an appropriate message

num = float(input("Enter a number: "))

if num > 0:

print("Positive number")

elif num == 0:

print("Zero")

else:

print("Negative number")

# In this program, we input a number

# check if the number is positive or

# negative or zero and display

# an appropriate message

# This time we use nested if

num = float(input("Enter a number: "))

if num >= 0:

if num == 0:

print("Zero")

else:

print("Positive number")

else:

print("Negative number")

Output 1

Enter a number: 5

Positive number

Output 2

Enter a number: 0

Zero

Output 3

Enter a number: -4

Negative number

Python Program to Check if a String is Palindrome or Not

# Program to check if a string

# is palindrome or not

# take input from the user

my_str = input("Enter a string: ")

# make it suitable for caseless comparison

my_str = my_str.casefold()

# reverse the string

rev_str = reversed(my_str)

# check if the string is equal to its reverse

if list(my_str) == list(rev_str):

print("It is palindrome")

else:

print("It is not palindrome")

Output 1

Enter a string: aIbohPhoBiA

It is palindrome

Output 2

Enter a string: 13344331

It is palindrome

Output 3

Enter a string: palindrome

It is not palindrome

Python Program to Check Leap Year

# Python program to check if

# the input year is

# a leap year or not

year = int(input("Enter a year: "))

if (year % 4) == 0:

if (year % 100) == 0:

if (year % 400) == 0:

print("{0} is a leap year".format(year))

else:

print("{0} is not a leap year".format(year))

else:

print("{0} is a leap year".format(year))

else:

print("{0} is not a leap year".format(year))

Output 1

Enter a year: 2012

2012 is a leap year

Output 2

Enter a year: 2015

2015 is not a leap year

Python Program to Check Prime Number

# Python program to check if

# the input number is

# prime or not

# take input from the user

num = int(input("Enter a number: "))

# prime numbers are greater than 1

if num > 1:

# check for factors

for i in range(2,num):

if (num % i) == 0:

print(num,"is not a prime number")

print(i,"times",num//i,"is",num)

break

else:

print(num,"is a prime number")

# if input number is less than

# or equal to 1, it is not prime

else:

print(num,"is not a prime number")

Output 1

Enter a number: 407

407 is not a prime number

11 times 37 is 407

Output 2

Enter a number: 853

853 is a prime number

Python Program to Convert Celsius To Fahrenheit

# Python Program to convert temperature in

# celsius to fahrenheit where, input is

# provided by the user in

# degree celsius

# take input from the user

celsius = float(input('Enter degree Celsius: '))

# calculate fahrenheit

fahrenheit = (celsius * 1.8) + 32

print('%0.1f degree Celsius is equal to %0.1f degree Fahrenheit' %(celsius,fahrenheit))

Output

Enter degree Celsius: 43.7

43.7 degree Celsius is equal to 110.66 degree Fahrenheit

Python Program to Convert Decimal into Binary, Octal and Hexadecimal

# Python program to convert decimal

# number into binary, octal and

# Take decimal number from user

dec = int(input("Enter an integer: "))

print("The decimal value of",dec,"is:")

print(bin(dec),"in binary.")

print(oct(dec),"in octal.")

Output

Enter an integer: 133

The decimal value of 133 is:

0b10000101 in binary.

0o205 in octal.

Python Program to Convert Decimal to Binary Using Recursion

# Python program to convert decimal

# number into binary number

# using recursive function

def binary(n):

"""Function to print binary number

for the input decimal using recursion"""

if n > 1:

binary(n//2)

print(n % 2,end = '')

# Take decimal number from user

dec = int(input("Enter an integer: "))

binary(dec)

Output

Enter an integer: 76

1001100

Python Program to Convert Kilometers to Miles

# Program to convert kilometers

# into miles where, input is

# provided by the user in

# kilometers

# take input from the user

kilometers = float(input('How many kilometers?: '))

# conversion factor

conv_fac = 0.621371

# calculate miles

miles = kilometers * conv_fac

print('%0.3f kilometers is equal to %0.3f miles' %(kilometers,miles))

Output

How many kilometers?: 3.7

5.500 kilometers is equal to 2.300 miles

Python Program to Count the Number of Each Vowel

# Program to count the number of

# each vowel in a string

# string of vowels

vowels = 'aeiou'

# take input from the user

ip_str = input("Enter a string: ")

# make it suitable for caseless comparisions

ip_str = ip_str.casefold()

# make a dictionary with each vowel a key and value 0

count = {}.fromkeys(vowels,0)

# count the vowels

for char in ip_str:

if char in count:

count[char] += 1

print(count)

Output

Enter a string: I welcome you all to read my book and learn python easily.

{'e': 4, 'u': 1, 'o': 6, 'a': 5, 'i': 1}

Python Program to Display Calendar

# Python program to display calendar

# of given month of the year

# import module

import calendar

# ask of month and year

yy = int(input("Enter year: "))

mm = int(input("Enter month: "))

# display the calendar

print(calendar.month(yy,mm))

Output

Enter year: 2015

Enter month: 09

September 2015

 Mo Tu We Th Fr Sa Su 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Python Program to Display Fibonacci Sequence Using Recursion

# Python program to display the Fibonacci

# sequence up to n-th term using

# recursive functions

def recur_fibo(n):

"""Recursive function to

print Fibonacci sequence"""

if n <= 1:

return n

else:

return(recur_fibo(n-1) + recur_fibo(n-2))

# take input from the user

nterms = int(input("How many terms? "))

# check if the number of terms is valid

if nterms <= 0:

print("Plese enter a positive integer")

else:

print("Fibonacci sequence:")

for i in range(nterms):

print(recur_fibo(i))

Output

How many terms? 8

Fibonacci sequence:

0

1

1

2

3

5

8

13

Python Program To Display Powers of 2 Using Anonymous Function

# Python Program to display

# the powers of 2 using

# anonymous function

# Take number of terms from user

terms = int(input("How many terms? "))

# use anonymous function

result = list(map(lambda x: 2 ** x, range(terms)))

# display the result

for i in range(terms):

print("2 raised to power",i,"is",result[i])

Output

How many terms? 6

2 raised to power 0 is 1

2 raised to power 1 is 2

2 raised to power 2 is 4

2 raised to power 3 is 8

2 raised to power 4 is 16

2 raised to power 5 is 32

Python Program to Display the multiplication Table

# Python program to find the multiplication

# table (from 1 to 10)c

# of a number input by the user

# take input from the user

num = int(input("Display multiplication table of? "))

# use for loop to iterate 10 times

for i in range(1,11):

print(num,'x',i,'=',num*i)

Output

Display multiplication table of? 7

7 x 1 = 7

7 x 2 = 14

7 x 3 = 21

7 x 4 = 28

7 x 5 = 35

7 x 6 = 42

7 x 7 = 49

7 x 8 = 56

7 x 9 = 63

7 x 10 = 70

Python Program to Find Armstrong Number in an Interval

# Program to ask the user

# for a range and display

# all Armstrong numbers in

# that interval

# take input from the user

lower = int(input("Enter lower range: "))

upper = int(input("Enter upper range: "))

for num in range(lower,upper + 1):

# initialize sum

sum = 0

# find the sum of the cube of each digit

temp = num

while temp > 0:

digit = temp % 10

sum += digit ** 3

temp //= 10

if num == sum:

print(num)

Output

Enter lower range: 0

Enter upper range: 999

0

1

153

370

371

407

Python Program to Find ASCII Value of Character

# Program to find the

# ASCII value of the

# given character

# Take character from user

c = input("Enter a character: ")

print("The ASCII value of '" + c + "' is",ord(c))

Output 1

Enter a character: k

The ASCII value of 'k' is 107

Output 2

Enter a character: =

The ASCII value of '=' is 61

Python Program to Find Factorial of Number Using Recursion

# Python program to find the

# factorial of a number

# using recursion

def recur_factorial(n):

"""Function to return the factorial

of a number using recursion"""

if n == 1:

return n

else:

return n*recur_factorial(n-1)

# take input from the user

num = int(input("Enter a number: "))

# check is the number is negative

if num < 0:

print("Sorry, factorial does not exist for negative numbers")

elif num == 0:

print("The factorial of 0 is 1")

else:

print("The factorial of",num,"is",recur_factorial(num))

Output 1

Enter a number: -5

Sorry, factorial does not exist for negative numbers

Output 2

Enter a number: 5

The factorial of 5 is 120

Python Program to Find Factors of Number

# Python Program to find the

# factors of a number

# define a function

def print_factors(x):

"""This function takes a

number and prints the factors"""

print("The factors of",x,"are:")

for i in range(1, x + 1):

if x % i == 0:

print(i)

# take input from the user

num = int(input("Enter a number: "))

print_factors(num)

Output

Enter a number: 120

The factors of 120 are:

1

2

3

4

5

6

8

10

12

15

20

24

30

40

60

120

Python Program to Find Hash of File

# Python rogram to find the SHA-1

# message digest of a file

# import hashlib module

import hashlib

def hash_file(filename):

""""This function returns the SHA-1 hash

of the file passed into it"""

# make a hash object

h = hashlib.sha1()

# open file for reading in binary mode

with open(filename,'rb') as file:

# loop till the end of the file

chunk = 0

while chunk != b'':

# read only 1024 bytes at a time

h.update(chunk)

# return the hex representation of digest

return h.hexdigest()

message = hash_file("track1.mp3")

print(message)

Output

633d7356947eec543c50b76a1852f92427f4dca9

Python Program to Find HCF or GCD

# Python program to find the

# H.C.F of two input number

# define a function

def hcf(x, y):

"""This function takes two

integers and returns the H.C.F"""

# choose the smaller number

if x > y:

smaller = y

else:

smaller = x

for i in range(1,smaller + 1):

if((x % i == 0) and (y % i == 0)):

hcf = i

return

# take input from the user

num1 = int(input("Enter first number: "))

num2 = int(input("Enter second number: "))

print("The H.C.F. of", num1,"and", num2,"is", hcf(num1, num2))

Output

Enter first number: 40

Enter second number: 48

The H.C.F. of 40 and 48 is 8

Python Program to Find LCM

# Python Program to find the

# L.C.M. of two input number

# define a function

def lcm(x, y):

"""This function takes two

integers and returns the L.C.M."""

# choose the greater number

if x > y:

greater = x

else:

greater = y

while(True):

if((greater % x == 0) and (greater % y == 0)):

lcm = greater

break

greater += 1

return lcm

# take input from the user

num1 = int(input("Enter first number: "))

num2 = int(input("Enter second number: "))

print("The L.C.M. of", num1,"and", num2,"is", lcm(num1, num2))

Output

Enter first number: 3

Enter second number: 4

The L.C.M. of 3 and 4 is 12

Python Program to Find Numbers Divisible by Another Number

# Python Program to find numbers

# divisible by thirteen

# from a list using anonymous function

# Take a list of numbers

my_list = [12, 65, 54, 39, 102, 339, 221,]

# use anonymous function to filter

result = list(filter(lambda x: (x % 13 == 0), my_list))

# display the result

print("Numbers divisible by 13 are",result)

Output

Numbers divisible by 13 are [65, 39, 221]

Python Program to Find Sum of Natural Numbers Using Recursion

# Python program to find the sum of

# natural numbers up to n

# using recursive function

def recur_sum(n):

"""Function to return the sum

of natural numbers using recursion"""

if n <= 1:

return n

else:

return n + recur_sum(n-1)

# take input from the user

num = int(input("Enter a number: "))

if num < 0:

print("Enter a positive number")

else:

print("The sum is",recur_sum(num))

Output

Enter a number: 10

The sum is 55

Python Program to Find the Factorial of a Number

# Python program to find the

# factorial of a number

# provided by the user

# take input from the user

num = int(input("Enter a number: "))

factorial = 1

# check if the number is negative, positive or zero

if num < 0:

print("Sorry, factorial does not exist for negative numbers")

elif num == 0:

print("The factorial of 0 is 1")

else:

for i in range(1,num + 1):

factorial = factorial*i

print("The factorial of",num,"is",factorial)

Output 1

Enter a number: -18

Sorry, factorial does not exist for negative numbers

Output 2

Enter a number: 9

The factorial of 9 is 362,880

Python Program to Find the Largest Among Three Numbers

# Python program to find the largest

# number among the three

# input numbers

# take three numbers from user

num1 = float(input("Enter first number: "))

num2 = float(input("Enter second number: "))

num3 = float(input("Enter third number: "))

if (num1 > num2) and (num1 > num3):

largest = num1

elif (num2 > num1) and (num2 > num3):

largest = num2

else:

largest = num3

print("The largest number is",largest)

Output 1

Enter first number: 8

Enter second number: 16

Enter third number: 4

The largest number is 16.0

Output 2

Enter first number: -6

Enter second number: -15

Enter third number: 0

The largest number is 0.0

Python Program to Find the Size (Resolution) of Image

# Python Program to find the resolution

# of a jpeg image without using

# any external libraries

def jpeg_res(filename):

""""This function prints the resolution

of the jpeg image file passed into it"""

# open image for reading in binary mode

with open(filename,'rb') as img_file:

# height of image (in 2 bytes) is at 164th position

img_file.seek(163)

# calculate height

height = (a << 8) + a

# next 2 bytes is width

# calculate width

width = (a << 8) + a

print("The resolution of the image is",width,"x",height)

jpeg_res("image.jpg")

Output

The resolution of the image is 180 x 200

Python Program to Find the Square Root

# Python Program to calculate the square root

num = float(input('Enter a number: '))

num_sqrt = num ** 0.5

print('The square root of %0.3f is %0.3f'%(num ,num_sqrt))

Output

Enter a number: 11

The square root of 11.000 is 3.316

Python Program to Find the Sum of Natural Numbers

# Python program to find the sum of

# natural numbers up to n

# where n is provided by user

# take input from the user

num = int(input("Enter a number: "))

if num < 0:

print("Enter a positive number")

else:

sum = 0

# use while loop to iterate un till zero

while(num > 0):

sum += num

num -= 1

print("The sum is",sum)

Output

Enter a number: 10

The sum is 55

Python Program to Generate a Random Number

# Program to generate a random number

# between 0 and 9

# import the random module

import random

print(random.randint(0,9))

Output

5

Python Program to Illustrate Different Set Operations

# Program to perform different

# set operations like in mathematics

# define three sets

E = {0, 2, 4, 6, 8};

N = {1, 2, 3, 4, 5};

# set union

print("Union of E and N is",E | N)

# set intersection

print("Intersection of E and N is",E & N)

# set difference

print("Difference of E and N is",E - N)

# set symmetric difference

print("Symmetric difference of E and N is",E ^ N)

Output

Union of E and N is {0, 1, 2, 3, 4, 5, 6, 8}

Intersection of E and N is {2, 4}

Difference of E and N is {8, 0, 6}

Symmetric difference of E and N is {0, 1, 3, 5, 6, 8}

Python Program to Make a Simple Calculator

# Program make a simple calculator

# that can add, subtract, multiply

# and divide using functions

# define functions

return x + y

def subtract(x, y):

"""This function subtracts two numbers"""

return x - y

def multiply(x, y):

"""This function multiplies two numbers"""

return x * y

def divide(x, y):

"""This function divides two numbers"""

return x / y

# take input from the user

print("Select operation.")

print("2.Subtract")

print("3.Multiply")

print("4.Divide")

choice = input("Enter choice(1/2/3/4):")

num1 = int(input("Enter first number: "))

num2 = int(input("Enter second number: "))

if choice == '1':

elif choice == '2':

print(num1,"-",num2,"=", subtract(num1,num2))

elif choice == '3':

print(num1,"*",num2,"=", multiply(num1,num2))

elif choice == '4':

print(num1,"/",num2,"=", divide(num1,num2))

else:

print("Invalid input")

Output

Select operation.

2.Subtract

3.Multiply

4.Divide

Enter choice(1/2/3/4): 2

Enter first number: 20

Enter second number: 11

20 - 11 = 9

Python Program to Multiply Two Matrices

# Program to multiply two matrices

# using nested loops

# 3x3 matrix

X = [[12,7,3],

[4 ,5,6],

[7 ,8,9]]

# 3x4 matrix

Y = [[5,8,1,2],

[6,7,3,0],

[4,5,9,1]]

# result is 3x4

result = [[0,0,0,0],

[0,0,0,0],

[0,0,0,0]]

# iterate through rows of X

for i in range(len(X)):

# iterate through columns of Y

for j in range(len(Y)):

# iterate through rows of Y

for k in range(len(Y)):

result[i][j] += X[i][k] * Y[k][j]

for r in result:

print(r)

Output

[114, 160, 60, 27]

[74, 97, 73, 14]

[119, 157, 112, 23]

Python Program to Print all Prime Numbers in an Interval

# Python program to ask the user

# for a range and display

# all the prime numbers in

# that interval

# take input from the user

lower = int(input("Enter lower range: "))

upper = int(input("Enter upper range: "))

for num in range(lower,upper + 1):

# prime numbers are greater than 1

if num > 1:

for i in range(2,num):

if (num % i) == 0:

break

else:

print(num)

Output

Enter lower range: 100

Enter upper range: 200

101

103

107

109

113

127

131

137

139

149

151

157

163

167

173

179

181

191

193

197

199

Python Program to Print Hi Good Morning!

# This program prints Hi, Good Morning!

print('Hi, Good Morning!')

Output

Hi, Good Morning!

Python program to Print the Fibonacci sequence

# Program to display the fibonacci

# sequence up to n-th tern where

# n is provided by the user

# take input from the user

nterms = int(input("How many terms? "))

# first two terms

n1 = 0

n2 = 1

count = 2

# check if the number of terms is valid

if nterms <= 0:

print("Plese enter a positive integer")

elif nterms == 1:

print("Fibonacci sequence:")

print(n1)

else:

print("Fibonacci sequence:")

print(n1,",",n2,end=' , ')

while count < nterms:

nth = n1 + n2

print(nth,end=' , ')

# update values

n1 = n2

n2 = nth

count += 1

Output

How many terms? 12

Fibonacci sequence:

0 , 1 , 1 , 2 , 3 , 5 , 8 , 13 , 21 , 34 , 55 , 89

Python Program to Remove Punctuations form a String

# Program to all punctuations from the

# string provided by the user

# define punctuations

punctuations = '''!()-[]{};:'"\,<>./?@#\$%^&*_~'''

# take input from the user

my_str = input("Enter a string: ")

# remove punctuations from the string

no_punct = ""

for char in my_str:

if char not in punctuations:

no_punct = no_punct + char

# display the unpunctuated string

print(no_punct)

Output

Enter a string: "Hello!!!", Good Morning ---Have a good day.

Hello Good Morning Have a good day

Python Program to Shuffle Deck of Cards

# Python program to shuffle a

# deck of card using the

# module random and draw 5 cards

# import modules

import itertools, random

# make a deck of cards

# shuffle the cards

random.shuffle(deck)

# draw five cards

print("You got:")

for i in range(5):

print(deck[i], "of", deck[i])

Output 1

You got:

5 of Heart

1 of Heart

Output 2

You got:

10 of Club

1 of Heart

3 of Diamond

2 of Club

3 of Club

Python Program to Solve Quadratic Equation

# ax**2 + bx + c = 0

# a,b,c are provied by the user

# import complex math module

import cmath

a = float(input('Enter a: '))

b = float(input('Enter b: '))

c = float(input('Enter c: '))

# calculate the discriminant

d = (b**2) - (4*a*c)

# find two solutions

sol1 = (-b-cmath.sqrt(d))/(2*a)

sol2 = (-b+cmath.sqrt(d))/(2*a)

print('The solution are {0} and {1}'.format(sol1,sol2))

Output

Enter a: 1

Enter b: 5

Enter c: 6

The solutions are (-3+0j) and (-2+0j)

Python Program to Sort Words in Alphabetic Order

# Program to sort alphabetically the words

# form a string provided by the user

# take input from the user

my_str = input("Enter a string: ")

# breakdown the string into a list of words

words = my_str.split()

# sort the list

words.sort()

# display the sorted words

for word in words:

print(word)

Output

Enter a string: this is my second python book to read

book

is

my

python

second

this

to

Python Program to Swap Two Variables

# Python program to swap two variables

# provided by the user

x = input('Enter value of x: ')

y = input('Enter value of y: ')

# create a temporary variable

# and swap the values

temp = x

x = y

y = temp

print('The value of x after swapping: {}'.format(x))

print('The value of y after swapping: {}'.format(y))

Output

Enter value of x: 8

Enter value of y: 15

The value of x after swapping: 15

The value of y after swapping: 8

Python Program to Transpose a Matrix

# Program to transpose a matrix

# using nested loop

X = [[12,7],

[4 ,5],

[3 ,8]]

result = [[0,0,0],

[0,0,0]]

# iterate through rows

for i in range(len(X)):

# iterate through columns

for j in range(len(X)):

result[j][i] = X[i][j]

for r in result:

print(r)

Output

[12, 4, 3]

[7, 5, 8]

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