Python Programs

Python Programming Language

Program to calculate the number of times a specific letter occurs in a string.

name = input('What is your name : ')

print('\nHello '+ name)

st = input('Please enter a message : ')

ch = input('Which letter would you like to count the occurences of : ')

print('Your message : ' + st)

st = st.lower()

count = st.count(ch)

print(name + ', your message has ' + str(count) + '  ' + ch + " 's in it.")

Output :- 

What is your name : Passable Blog

Hello Passable Blog

Please enter a message : This is Passable Blog. Here are some python programs. 

Which letter would you like to count the occurences of : p

Your message : This is Passable Blog. Here are some python programs. 

Passable Blog,your message has 3 p's in it.

Program to create a python calculator that will perform addition, subtraction, multiplication and division.

#PYTHON CALCULATOR

def add(num1,num2):

    result=num1+num2

    print('Addition : '+ str(result))

    

def sub(num1,num2):

    result=num1-num2

    print('Subtraction : '+ str(result))

def mul(num1,num2):

    result=num1*num2

    print('Multiplication : '+ str(result))

def div(num1,num2):

    result=num1/num2

    print('Division : '+ str(result))

    

print('Python Calculator : ') 

print('1.Addition')

print('2.Substraction')

print('3.Multiplication')

print('4.Division')

print('5.Exit')

while True:

    ch=int(input('\nEnter your choice : '))

    if (ch>=1 and ch<=6):

        if ch==1 :

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

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

            add(num1,num2)

        if ch==2:

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

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

            sub(num1,num2)

        if ch==3:

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

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

            mul(num1,num2)

        if ch==4:

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

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

            div(num1,num2)

        if ch==5:

            break

    else :

        print('You entered a wrong choice')

Output:- 

 

Python Calculator : 

1.Addition

2.Substraction

3.Multiplication

4.Division

5.Exit

 

Enter your choice : 1

Enter first number : 2

Enter second number : 3

Addition : 5

 

Enter your choice : 2

Enter first number : 9

Enter second number : 6

Subtraction : 3

 

Enter your choice : 3

Enter first number : 6

Enter second number : 5

Multiplication : 30

 

Enter your choice : 4

Enter first number : 6

Enter second number : 3

Division : 2.0

 

Enter your choice : 5

       

Program to solve quadratic equations.

import cmath

n = int(input('\nHow many equations would you like to solve today : '))

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

    print('Solving equation #' + str(i))

    print('------------------------------')

    a = float(input('\nPlease enter your value of a(coefficient of x^2) : '))

    b = float(input('Please enter your value of b(coefficient of x) : '))

    c = float(input('Please enter your value of c(coefficient) : '))

    x1 = (-b+cmath.sqrt(b**2-4*a*c))/(2*a)

    x2 = (-b-cmath.sqrt(b**2-4*a*c))/(2*a)

    print('The solution to ' + str(a)+ 'x^2 + ' + str(b) + ' x + ' + str(c) + ' are : ')

    print('\tx1 = ' + str(x1))

    print('\tx2 = ' + str(x2))

Output:-

How many equations would you like to solve today : 2

Solving equation #1

------------------------------

Please enter your value of a(coefficient of x^2) : 2

Please enter your value of b(coefficient of x) : 4

Please enter your value of c(coefficient) : 2

The solution to 2.0x^2 + 4.0 x + 2.0 are : 

x1 = (-1+0j)

x2 = (-1+0j)

Solving equation #2

------------------------------

Please enter your value of a(coefficient of x^2) : 3

Please enter your value of b(coefficient of x) : 5

Please enter your value of c(coefficient) : 2

The solution to 3.0x^2 + 5.0 x + 2.0 are : 

x1 = (-0.6666666666666666+0j)

x2 = (-1+0j)

Program to convert temperature from degree fahrenhite to degree celcius and degree kelvin.

f = float(input('What is the given temperature in degrees Fahrenheit : '))

k = (f+459.67)*5/9

c = (f-32)*5/9

f = round(f,4)

c = round(c,4)

k = round(k,4)

print('\nDegrees Fahrenheit :\t\t'+ str(f))

print('Degrees Celsius :\t\t'+ str(c))

print('Degrees Kelvin :\t\t'+ str(k))

Output:-

What is the given temperature in degrees Fahrenheit : 36

Degrees Fahrenheit : 36.0

Degrees Celsius : 2.2222

Degrees Kelvin : 275.3722

Program to print multiplication and exponential table.

n = float(input('What number would you like to work with : '))

print('Multiplication Table : \n')

for i in range(1,10):

    print('\t' + str(i) + ' * ' + str(n) + ' = ' + str(round(i*n,2)))

print('Exponential Table : \n')

for i in range(1,10):

    print('\t' + str(i) + ' ** ' + str(n) + ' = ' + str(round(i**n,4)))

Output:- 

What number would you like to work with : 3.6

Multiplication Table : 

1 * 3.6 = 3.6

2 * 3.6 = 7.2

3 * 3.6 = 10.8

4 * 3.6 = 14.4

5 * 3.6 = 18.0

6 * 3.6 = 21.6

7 * 3.6 = 25.2

8 * 3.6 = 28.8

9 * 3.6 = 32.4

Exponential Table : 

1 ** 3.6 = 1.0

2 ** 3.6 = 12.1257

3 ** 3.6 = 52.1959

4 ** 3.6 = 147.0334

5 ** 3.6 = 328.316

6 ** 3.6 = 632.9137

7 ** 3.6 = 1102.4349

8 ** 3.6 = 1782.8876

9 ** 3.6 = 2724.4136