Python Intermediate Programs by Devansh Mishra.

Some normal Python programs are given below and is very useful to Python beginner's. 

1. Calculator Program

operation = input('''

Please type in the math operation you would like to complete:

+ for addition

- for subtraction

* for multiplication

/ for division

''')

number_1 = int(input('Enter your first number: '))

number_2 = int(input('Enter your second number: '))

print('{} + {} = '.format(number_1, number_2))

print(number_1 + number_2)

print('{} - {} = '.format(number_1, number_2))

print(number_1 - number_2)

print('{} * {} = '.format(number_1, number_2))

print(number_1 * number_2)

print('{} / {} = '.format(number_1, number_2))

print(number_1 / number_2)

     

2. Find vowels in Given String using Python

a_string = input("Enter String ")

lowercase = a_string.lower()

vowel_counts = {}

for vowel in "aeiou":

    count = lowercase.count(vowel)

    vowel_counts[vowel] = count

counts = vowel_counts.values()

total_vowels = sum(counts)

print("total vowels in string" ,total_vowels)

     

3. Find two strings are Anagram using Python

s1=input("Enter first string:")

s2=input("Enter second string:")

if(sorted(s1)==sorted(s2)):

      print("The strings are anagrams.")

else:

      print("The strings aren't anagrams.")

     

4. Remove whitespace from string using Python

def remove(string): 

 return string.replace(" ", "") 

string = input("Enter String with Spaces : ")

print(remove(string)) 

     

5. Snap two strings

str1 = input("Enter First String :")

str2 = input("Enter Second String :")  

   

print("Strings before swapping: " + str1 + " " + str2)

   

str1 = str1 + str2 

 

str2 = str1[0 : (len(str1) - len(str2))]

  

str1 = str1[len(str2):]

   

print("Strings after swapping: " + str1 + " " + str2)

     

6. Binary to Hexadecimal using Python

dec = int(input("Enter a decimal number: "))  

print(hex(dec),"in hexadecimal.")  

     

7. Largest no. From array

arr1 = [5, 1, 70, 75, 56, 78, 40]   

max = arr1[0] 

for i in range(0, len(arr1)):    

   if(arr1[i] > max):    

       max = arr1[i]   

           

print("Largest element : " + str(max));

     

8. Sort given unsorted array using Python

arr = [5, 2, 8, 7, 1];     

temp = 0;    

     

print("Elements of original array: ");    

for i in range(0, len(arr)):    

    print(arr[i], end=" ");    

     

for i in range(0, len(arr)):    

    for j in range(i+1, len(arr)):    

        if(arr[i] > arr[j]):    

            temp = arr[i];    

            arr[i] = arr[j];    

            arr[j] = temp;    

     

print();    

print("Elements of array sorted in ascending order: ");    

for i in range(0, len(arr)):    

    print(arr[i], end=" ");

    

     

9. Reverse a string

txt =input("Enter String: ")[::-1]

print(txt)

10. Count Character in String

string = "How you doing?"

substring = "i"

count = string.count(substring)

print("The count is:", count)

    

11.  Area and Perimeter of triangle

l=int(input("Length : "))

w=int(input("Width : "))

area=l*w

perimeter=2*(l+w)

print("Area of Rectangle : ",area)

print("Perimeter of Rectangle : ",perimeter)

    

12. Perfect no. 

def perfect_number(n):

    sum = 0

    for x in range(1, n):

        if n % x == 0:

            sum += x

    return sum == n

print(perfect_number(7))

    

13. Check given character is capital, small, digit using Python

ch = input("Please Enter Your Own Character : ")

if(ord(ch) >= 48 and ord(ch) <= 57): 

    print("The Given Character ", ch, "is a Digit") 

elif((ord(ch) >= 65 and ord(ch) <= 90) or (ord(ch) >= 97 and ord(ch) <= 122)):

    print("The Given Character ", ch, "is an Alphabet")

else:

    print("The Given Character ", ch, "is a Special Character")

    

14. Matrix Multiplication

X = [ [4,2],[3,4],[7,8] ]

Y = [ [8,3,5],[4,7,9] ]

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

my_list = []

for i in range( len(X) ):

   for j in range(len(Y[0])):

       for k in range(len(Y)):

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

  

for r in result:

   print(r)

  

  

15. Reverse linked text

reverse linked list using Python

class Node:

    def __init__(self, data):

        self.data = data

        self.next = None

class LinkedList:

    def __init__(self):

        self.head = None

    def reverse(self):

        if self.head is None or self.head.next is None:

            return

        prev = None

        cur = self.head

        while cur:

            next_element = cur.next

            cur.next = prev

            prev = cur

            cur = next_element

        self.head = prev

    def push(self, data):

        new_node = Node(data)

        new_node.next = self.head

        self.head = new_node

    def print_list(self):

        cur = self.head

        l1 = []

        while cur:

            l1.append(cur.data)

            cur = cur.next

        return l1

head = LinkedList()

head.push(3)

head.push(4)

head.push(5)

head.push(6)

print("Given list is: ", head.print_list())

head.reverse()

print("Reversed list is: ", head.print_list())

    

>>> 

Given list is: [6, 5, 4, 3]

Reversed list is: [3, 4, 5, 6]

16. Sort string alphabetically using Python

my_str = input("Enter String : ")

words = [word.lower() for word in my_str.split()]

words.sort()

print("The sorted words are:")

for word in words:

   print(word)