ASCII VALUE

Aim: Implement a Python program to find the ASCII value of the given character

Program:

# Take character from user

c = input("Enter a character: ")

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

Output

Enter a character: p

The ASCII value of 'p' is 112

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CALENDAR

Aim: Implement a Python program to display calendar of given month of the year

Program:

# 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: 2014

Enter month: 11

  November 2014

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.

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DECIMAL TO BINARY,OCTAL & HEXA DECIMAL

Aim: Implement a Python program to convert decimal number into binary, octal and hexadecimal number system

Program:

# Python program to convert decimal number into binary, octal and hexadecimal number system

# 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.")

print(hex(dec),"in hexadecimal.")

Output:

Enter an integer: 344

The decimal value of 344 is:

0b101011000 in binary.

0o530 in octal.

0x158 in hexadecimal

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REMOVE PUNCTUATION

Aim: Implement a Python program to remove to all punctuation from the string provided by the user

Program:

# Program

# define punctuation

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

# take input from the user

my_str = input("Enter a string: ")

# remove punctuation 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!!!", he said ---and went.

Hello he said and went

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HCF

Aim: Implement a Python program to find the H.C.F of two input numbers.

Program:

# define a function

def hcf(x, y):

   # 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: 54

Enter second number: 24

The H.C.F. of 54 and 24 is 6

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File handling

Aim: Implement a Program to implement the concept of files

Algorithm:

1.Start

2.Open a file in write mode

3.Save some data.

4.Display the content in the file

6.Stop

Program:

 colors = ['red\n', 'yellow\n', 'blue\n']

f = open('colors.txt', 'w')

f.writelines(colors)

f.close()

Output:

Red

Yellow

blue

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Pickling

Aim: Implement a Program to implement the concept of pickling.

Algorithm:

1.Start

2.Create a dictionary

3.Save a dictionary into a pickle file.

4. Load the dictionary back from the pickle file.

5.Dispaly the dictionary.

6.Stop

Program:

 # Save a dictionary into a pickle file.

    import pickle

    favorite_color = { "lion": "yellow", "kitty": "red" }

     pickle.dump( favorite_color, open( "save.p", "wb" ) )

# Load the dictionary back from the pickle file.

    import pickle

    favorite_color = pickle.load( open( "save.p", "rb" ) )

print favorite_color

    # favorite_color is now { "lion": "yellow", "kitty": "red" }

Output: 

{ "lion": "yellow", "kitty": "red" }

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TUPLES

Aim: Implement a Program to implement the concept of tuples.

Algorithm:

1.Start

2.Create a Zero-element tuple tuple a=()

3. Create a One-element tuple b = ("one",)

4. Create a Two-element tuple c = ("one", "two")

5.Print tuples and length.

6.Stop

Program:

# Zero-element tuple.

a = ()

# One-element tuple.

b = ("one",)

# Two-element tuple.

c = ("one", "two")

print(a)

print(len(a))

print(b)

print(len(b))

print(c)

print(len(c))

Output: 

()

0

('one',)

1

('one', 'two')

2

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Dictionary

                              

Aim: Implement a Program to implement a dictionary comprehension.

Algorithm:

1.Start

2. Create a dictionary

3.Update existing entry

4.Add a new entry.

5.Print the updates.

6.Stop

Program:

dict = {'Name': 'Zara', 'Age': 7, 'Class': 'First'}

dict['Age'] = 8       # update existing entry

dict['School'] = "DPS School"            # Add new entry

print "dict['Age']: ", dict['Age']

print "dict['School']: ", dict['School']

Output:

dict['Age']:  8

dict['School']:  DPS School

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LIST and SLICING

:                                  

Aim: Implement a Program to implement list and slicing operations.

Algorithm:

1.Start

2.Define a list

3. Slice from third index to index one from last

4.stop

Program:

values = [100, 200, 300, 400, 500]

# Slice from third index to index one from last.

slice = values[2:-1]

print(slice)

Output:

[200, 300]

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Set operations

Aim: Implement a Program to implement set operations

Algorithm:

1.Start

2.Enter 2 sets E,N

3.Perform set union

4.Perform set intersection

5.Perform set difference and symmetric difference

6.Print results

7.Stop

Program:

# define two 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}

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Number of each vowel in a string

Aim: Implement a Program to count the number of each vowel in a string

Algorithm:

1.Start

2.Enter the string s.

3.Take each character in the string and compare with ‘a,e,i,o,u’.

4.If found increment corresponding counter by one.

5.Print the counter values.

6.Stop

Program:

# 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: Hello, have you tried our turorial section yet?

{'e': 5, 'u': 3, 'o': 5, 'a': 2, 'i': 3}4)

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Lexicographic sorting

  

Aim: Implement a program to illustrate how words can be sorted lexicographically (alphabetic order).

Algorithm:

1.      Start.

2.      Read the string .

3.      Breakdown the string into a list of words using split() function.

4.      Sort the list using sort() function.

5.      Display the sorted words.

6.      Stop.

Program:

# 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: Hello this Is an Example With cased letters

Example

Hello

Is

With

an

cased

letters

this

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String Palindrome

Aim: Implement a program to check if a string is palindrome or not

Algorithm:

1.      Input a String

2.      Make it suitable for caseless comparison using casefold() function

3.      Reverse the string

4.      Check if the string is equal to its reverse then go to 5 else go to 6

5.      Print string Is a Palindrome go to step 7

6.      Print string Is Not a Palindrome

7.      Stop

Program:

# 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 :

Enter a string: malayalam

It is palindrome

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Factorial of a number

Aim: Implement a program to find the factorial of a number using recursion

Algorithm:

1.Start

2.Enter he number ‘n’

3.call function factorial(n)

4.print result

5.Stop

Function factorial()

1.Start

2.if n=1 return n

3.if not return n*factorial(n-1)

4.Stop

Program:

# 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 :

Enter a number: 7

The factorial of 7 is 5040

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Python Program to Add Two arrays using function

Aim: Implement a program to add two matrix

Algorithm:

1.Start

2.Enter The first matrix

3.Enter the second matrix

3.call function Add(m1,m2)

4.print result

5.Stop

Function add(m1,m2)

1.Start

2.sum= append(m1[i][j]+m2[i][j])      

4.Stop

Program:

def add(m1,m2):        

            result=[]          

            for i in range(0,n):                  

                        sum1=[]                      

                        for j in range(0,m):                             

                                    result.append(m1[i][j]+m2[i][j])                     

                                    sum1.append(result)   

            return sum1

n=input("enter matrix limit")

m=input("enter matrix limit")

a=[]

print "first matrix"

for i in range(0,n):      

            b=[]    

            for i in range(0,m):

                        b.append(input())       

                        a.append(b)

print "second matrix"

c=[]

            for i in range(0,n):      

                        d=[]    

                        for i in range(0,m):                 

                                    d.append(input())       

                                    c.append(d)

print add(a,c)

            Output :

enter matrix limit:2

enter matrix limit:2

first matrix:2 3 4 5

second matrix:4 5 6 7

6 8

10 12

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