python programming examples

                 python programming examples

In this article, today learn basic python programming list.

1. Python hello word program :

print("This line will be printed.")

save script as  name of hello.py

2. Add Two Numbers:

# Python3 program to add two numbers

 

number1 = input("First number: ")

number2 = input("\nSecond number: ")

 

# Adding two numbers

# User might also enter float numbers

sum = float(number1) + float(number2)

 

# Display the sum

# will print value in float

print("The sum of {0} and {1} is {2}" .format(number1, number2, sum))

3. check whether a number is Prime or not:

num = 11

 

# If given number is greater than 1

if num > 1:

     

   # Iterate from 2 to n / 2 

   for i in range(2, num//2):

        

       # If num is divisible by any number between 

       # 2 and n / 2, it is not prime 

       if (num % i) == 0:

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

           break

   else:

       print(num, "is a prime number")

 

else:

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

4. Check Even Odd Number:

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

flag = num%2

if flag == 0:

    print(num, "is an even number")

elif flag == 1:

    print(num, "is an odd number")

else:

    print("Error, Invalid input")

5. Convert Celsius To Fahrenheit:

celsius = 37.5

fahrenheit = (celsius * 1.8) + 32

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

6. Convert Kilometers to Miles:

kilometers = 5.5

conv_fac = 0.621371

miles = kilometers * conv_fac

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

7. Display Calendar:

import calendar

yy = 2019

mm = 11

print(calendar.month(yy, mm))

8. Display the multiplication Table:

num = 12

for i in range(1, 11):

   print(num,'x',i,'=',num*i)

9. Do While loop:

Syntax:

do { 

     //statement 

} while (condition); 

              

              

              

Example:

i = 1 

 

while True: 

    print(i) 

    i = i + 1 

    if(i > 5): 

        break 

10. Fibonacci number:

def Fibonacci(n):

    if n<0:

        print("Incorrect input")

    # First Fibonacci number is 0

    elif n==1:

        return 0

    # Second Fibonacci number is 1

    elif n==2:

        return 1

    else:

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

 

# Driver Program

 

print(Fibonacci(9))

11. Factorial 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)

12. find area of a circle:

def findArea(r):

    PI = 3.142

    return PI * (r*r);

 

# Driver method

print("Area is %.6f" % findArea(5));

13. Find ASCII Value of Character:

c = 'p'

# Uncomment to take character from user

#c = input("Enter a character: ")

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

14. find sum of array:

def _sum(arr,n):

     

    # return sum using sum 

    # inbuilt sum() function

    return(sum(arr))

 

# driver function

arr=[]

# input values to list

arr = [12, 3, 4, 15]

 

# calculating length of array

n = len(arr)

 

ans = _sum(arr,n)

 

# display sum

print (\'Sum of the array is \',ans)

15. Find the Size (Resolution) of a Image:

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)

       # read the 2 bytes

       a = img_file.read(2)

       # calculate height

       height = (a[0] << 8) + a[1]

       # next 2 bytes is width

       a = img_file.read(2)

       # calculate width

       width = (a[0] << 8) + a[1]

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

jpeg_res("img1.jpg")

16. Leap Year:

year = 2000

# To get year (integer input) from the user

# 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))

17. Nested If Statment:

Syntax:

if (condition1):

   # Executes when condition1 is true

   if (condition2):

      # Executes when condition2 is true

   # if Block is end here

# if Block is end here

Example:

i = 10

if (i == 10):

    #  First if statement

    if (i < 15):

        print ("i is smaller than 15")

    # Nested - if statement

    # Will only be executed if statement above

    # it is true

    if (i < 12):

        print ("i is smaller than 12 too")

    else:

        print ("i is greater than 15")