Article 1: Basics Of Python

 In this article, we are going to see some basic python programming examples which you can see as below:

Problem Statement 1:   Write a Python program to swap two numbers

 

# Lab Assignment 1.1

# Write a Python program to swap two numbers.

 

#Taken input from User

a=int(input("Enter the first number:"))

b=int(input("Enter the second number:"))

print("Before Swapping:")

print(a)

print(b)

 

 

#swapping Operation

a,b=b,a

 

 

print("After Swapping")

print(a)

print(b)

 

Problem Statement 2:  Write a Python program to find  the greatest of 3 numbers.

 

Program:

#Lab Assignment 1.2

# Write a Python program to find the greatest of 3 numbers.

 

#taking input from users

x=int(input("Enter the first number:"))

y=int(input("Enter the second number:"))

z=int(input("Enter the third number:"))

 

#using if and elif for finding largest number among entered number

if (x>y) and (x>z):

    print("The greatest number: "+x)

 

elif (y>x) and (y>z):

    print(" The greatest number: "+y)

 

else:

    print(" The greatest number: "+z)

 

 

 

Problem Statement 3: Write a Python program to convert days entered into months and days

 

Input: 1256

 

Program:

#Lab Assignment 1.3

#Write a Python program to convert days entered into months and days.

 

#taking total number of days as input from user

days_enter=int(input("Enter number of days you want to convert into month: "))

 

#for example: days_enter=45

month=int(days_enter/30)

 

#Month is equal 45/30 which is 1

day=int(days_enter % 30)

 

#day is equal to 45%30 which is 15

print("Number of days entered by user: ",days_enter)

print("----------------------------------------")

print("Number of Month: ",month)

print("Number of day: ",day)

 

Problem Statement 4:  Write a Python program to find the roots of a Quadratic equation

 

Program:

#Lab Assignment 1.4

#Write a Python program to find the roots of a Quadratic equation.

 

# importing math library from installed libraries

import math

 

#taking value of a,b,c in quadratic equation

a=int(input("Enter the value for A:"))

b=int(input("Enter the value for B:"))

c=int(input("Enter the value for C:"))

 

# using formula of d

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

 

#using if-elif for checking of roots from value of d

if (d>0):

    print("First Root:",(((-b) +math.sqrt(d))/(2*a)))

    print("Second Root:",((-b -math.sqrt(d))/(2*a)))

 

elif (d<0):

    print("Real Root does not exist")

 

else:

    print("Root :",((-b)/(2*a)))

 

 

Problem Statement 5:  Write a Python program to evaluate the power function using while loop. 

Program:

#Lab Assignment 1.5

#Write a Python program to evaluate the power function using while loop.

 

# taking value of base and exponent from user

base = int(input(" Please Enter any Positive Integer : "))

exponent = int(input(" Please Enter Exponent Value : "))

 

#checking if the value of exponent is not negative

if (exponent>0):

    answer=base

 

elif (exponent==0):

    answer=1

  

 

 

 #calculating the answer

while(exponent > 1) :

    answer=answer * base

    exponent=exponent-1

 

print("Answer is:",answer)

Problem Statement 6: Write a Python program to evaluate the factorial function using while loop. 

Program:

 

#Lab Assignment 1.6

#Write a Python program to evaluate the factorial function using while loop.

 

#Taking the number for which user want to find factorial

 

number=int(input("Enter the value for which you want to get factorial value:"))

 

#Determining the value of fact and running while loop for calculation

 

fact=1

i=1

while (i<=number):

    fact=fact*i

    i=i+1

 

# Example: number is 3. fact is 1. the while loop will run from, i=1 to i=3 in which fact will be multiplying with i and i will be incrementing 1

 

print("factorial of ",number,"is",fact)

Problem Statement 7: Write a Python program to evaluate the sum of integers between a and b entered by the user that is divisible by 3.

Program:

#Lab Assignment 1.7

#Write a Python program to evaluate the sum of integers between a and b entered by the user that is divisible by 3.

 

#taking the lower bounds and upper bounds for given operation.

number1=int(input("Enter the first number for range: "))

number2=int(input("Enter the second number for range: "))

sum=0

 

 

# running for loop from upper to lower bound

for i in range(number1,number2):

    if((i%3)==0):

        sum=sum+i

 

 

 

# example:

# num1 is 5 and num2 is 10.

# in this range only 6 and 9 are integers which are divisible by 3

# so the answer would be summation of those integers. which is 15

 

print("-------------------")

print("The sum of integer which are divisible by 3 between ",number1," and ",number2," is ",sum)