Write a program that finds the average of a series of numbers entered by the user.

 Write a program that finds the average of a series of numbers entered by the user. As in the previous problem, the program will first ask the user how many numbers there are. Note: The average should always be a float, even if the user inputs are all ints.

CODE :

# sumnn.py 

def main() :

    n = int (input ("How many numbers are to be summed: ") ) 

    sum=0

    for i in range(n) :

        a = int (input ("Please enter number  : ") ) 

        sum=sum+a

    print ("Average of a series of numbers :",sum/n) 

main()

SCREENSHOT

Write a program to sum a series of numbers entered by the user.

 Write a program to sum a series of numbers entered by the user. The program should first prompt the user for how many numbers are to be summed. The program should then prompt the user for each of the numbers in turn and print out a total sum after all the numbers have been entered. Hint: Use an input statement in the body of the loop.

CODE

# sumnn.py 

def main() :

    n = int (input ("How many numbers are to be summed: ") ) 

    sum=0

    for i in range(n) :

        n = int (input ("Please enter number  : ") ) 

        sum=sum+n

    print ("Total Sum  :",sum) 

main()

SCREENSHOT

Write a program to find the sum of the cubes of the first n natural numbers where the value of n is provided by the user.

 SCREENSHOT

Write a python program to print table where table number inputed by user

 CODE

# tablen.py 

def main() :    

    n = int (input ("Please enter number: ") ) 

    for i in range(1,11) : 

        sum=n*i

        print (n,"*",i,"=",sum) 

main()

Note :save above file as : tablen.py

SCREENSHOT

Write a program to find the sum of the first n natural numbers, where the value of n is provided by the user.

 CODE :

# sumn.py 

# Write a program to find the sum of the first n natural numbers,

#where the value of n is provided by the user.

def main() : 

    sum=0

    n = int (input ("Please enter number: ") ) 

    for i in range(n+1) : 

        sum=sum+i

    print ("Sum of n Natural number is :",sum) 

main()

NOte : save this file as sumn.py

SCREENSHOT :

Program to compute the factorial of a number

CODE 

# factorial. py 

# Program to compute the factorial of a number 

# Illustrates for loop with an accumulator 

def main() : 

    n = int (input ("Please enter a whole number: ") ) 

    fact = 1 

    for factor in range(n,1,-1) : 

        fact = fact * factor 

    print ("The factorial of", n, "is", fact) 

main ()

NOTE : save above program as factorial.py

SCREENSHOT

Write a program that converts distances measured in kilometers to miles. One kilometer is approximately 0.62 miles.

 CODE

#kmtomiles.py

#Python program :It coverts kilometer to miles 

def main():

    print("This program convert Kilometers to miles")

    km=eval(input("Enter Kilometers ?"))

    miles = 0.62 * km 

    print("Aha , I know Miles are ",miles)

main()

NOTE : save above file as kmtomiles.py

SCREENSHOT

It Executes 5 times before quitting to convert Celsius temps into Fahrenhit

 Modify the convert.py program (Section 2.2) with a loop so that it executes 5 times before quitting. Each time through the loop, the program  should get another temperature from the user and print the converted value.

CODE :

#convert.py

#Python program :It Executes 5 times before quitting to convert Celsius temps into Fahrenhit

def main():

    print("This program convert Celsius temps into Fahrenhit")

    for i in range(5):

        celsius=eval(input("What is the Celsius temprarure outside now ?"))

        fahrenhit = 9/5 * celsius + 32

        print("Aha , I know temprature is ", fahrenhit , "degrees fahrenhit.")

main()

NOTE : save above file as convert_v1.py

SCREENSHOT :

Python Program to find the average of three exam scores.

 CODE

def main() : 

    print ("This program computes the average of two exam scores. ") 

    score1, score2,score3 = eval (input ("Enter three scores separated by a comma: ") ) 

    average = (score1 + score2  + score3) / 3

    print ("The average of the scores is: ", average) 

main()

SCREENSHOT

Python Program A simple program to average two exam scores

 

CODE

def main() : 

    print ("This program computes the average of two exam scores. ") 

    score1, score2 = eval (input ("Enter two scores separated by a comma: ") ) 

    average = (score1 + score2) / 2 

    print ("The average of the scores is: ", average) 

main()

SCREENSHOT

Future Value Python Program

 CODE :We want to develop a program to determine the future value of an investment.

def main () : 

    print ("This program calculates the future value") 

    print ("of a 10-year investment.") 

    principal = eval (input ("Enter the initial principal: $") ) 

    apr = eval (input ("Enter the annual interest rate: ") ) 

    for i in range (10) : 

        principal = principal * (1 + apr) 

        print ("The value in 10 years is: $", principal) 

main ()

save above program as futval.py

SCREENSHOT

Python program to convert Celsius temps into Fahrenhit

 

CODE

#convert.py

#Python program to convert Celsius temps into Fahrenhit

def main():

    print("This program convert Celsius temps into Fahrenhit")

    celsius=eval(input("What is the Celsius temprarure outside now ?"))

    fahrenhit = 9/5 * celsius + 32

    print("Aha , I know temprature is ", fahrenhit , "degrees fahrenhit.")

main()

NOTE : save above file as convert.py

SCREENSHOT

Modify the chaos program so that the number of values to print is determined by the user. You will have to add a line near the top of the program to get another value from the user:

 Modify the chaos program so that the number of values to print is determined by the user. You will have to add a line near the top of the program to get another value from the user:

n = eval(input("How many numbers should I print? ") ) Then you will need to change the loop to use n instead of a specific number.

CODE

def main():

    print("This program illustrates a chaotic function")

    n = eval(input("How many numbers should I Print ?"))

    x = eval(input("Enter a number between 0 and 1: "))

    for i in range(n):

        x = 3.9 * x * (1 - x)

        print(x)

main()

Note : Save above file as chaos_v2.py

SCREENSHOT

Modify the chaos program so that it prints out 20 values instead of 10.

 

CODE

def main():

    print("This program illustrates a chaotic function")

    x = eval(input("Enter a number between 0 and 1: "))

    for i in range(20):

        x = 3.9 * x * (1 - x)

        print(x)

main()

Note : Save above code as chaos_v3.py

SCREENSHOT

Modify the chaos program using 2.0 in place of 3.9 as the multiplier in the logistic function.

 Modify the chaos program using 2.0 in place of 3.9 as the multiplier in the logistic function.

Your modified line of code should look like this: X = 2. 0 * X * (1 - X)

CODE

def main():

    print("This program illustrates a chaotic function")

    x = eval(input("Enter a number between 0 and 1: "))

    for i in range(10):

        x = 2.0 * x * (1 - x)

        print(x)

main()

Note : Save above code as chaos_v1.py  

SCREENSHOT

Enter and run the chaos program

 

CODE

def main():

    print("This program illustrates a chaotic function")

    x = eval(input("Enter a number between 0 and 1: "))

    for i in range(10):

        x = 3.9 * x * (1 - x)

        print(x)

main()

Note : Save above code as chaos.py

SCREENSHOT

Python Program : 2 Write a Python Program to find summation of two numbers

 

CODE

def main():

    x=10

    y=20

    sum = x + y

    print("X's Value=",x)

    print("Y's Value=",y)

    print("Summation of X + Y =",sum)

main()

Note : Save above code as prog2.py

SCREENSHOT

Python Program : 1 Write a Python Program to print Hello World

CODE

 def main():

    print("Hello World")

main()

Note : Save above code as prog1.py

SCREENSHOT