Python Projects

Page Updated on Oct 12, 2022. 1st Published on Oct 12, 2022

Blessings.

Project 1: Basic

Let's assume you are planning to use your Python skills to build a social networking service. You decide to host your application on servers running in the cloud. You pick a hosting provider that charges $0.51 per hour. You will launch your service using one server and want to know how much it will cost to operate per day and per month.
Write a Python program that displays the answers to the following questions:
How much does it cost to operate one server per day?
How much does it cost to operate one server per month?

Solution

Here is one way to answer those questions using Python. Notice that comments are used throughout code. Also, keep in mind that there are multiple ways to solve this same problem.


              # The cost of one server per hour.
              cost_per_hour = 0.51
              # Compute the costs for one server.
              cost_per_day = 24 * cost_per_hour
              cost_per_month = 30 * cost_per_day
              # Display the results.
              print('Cost to operate one server per day is ${:.2f}.'.format(cost_per_day))
              print('Cost to operate one server per month is ${:.2f}.'.format(cost_per_month))
              Output:
              Cost to operate one server per day is $12.24.
              Cost to operate one server per month is $367.20.

Program 1-1: string concatenation

Building on the previous example, let's also assume that you have saved $918 to fund your new adventure. You wonder how many days you can keep one server running before your money runs out. Of course, you hope your social network becomes popular and requires 20 servers to keep up with the demand. How much will it cost to operate at that point?
Write a Python program that displays the answers to the following questions:
How much does it cost to operate one server per day?
How much does it cost to operate one server per month?
How much does it cost to operate twenty servers per day?
How much does it cost to operate twenty servers per month?
How many days can I operate one server with $918?

Solution

Here is one way to answer those questions using Python. Notice that comments are used throughout code. Also, keep in mind that there are multiple ways to solve this same problem.


                      Still working on the Solution

Program 2: Variables

Write a Python program that uses three variables. The variables in your program will be animal, vegetable, and mineral. Assign a string value to each one of the variables. Your program should display "Here is an animal, a vegetable, and a mineral." Next, display the value for animal, followed by vegetable, and finally mineral. Each one of the values should be printed on their own line. Your program will display four lines in total.
Sample Output:
Here is an animal, a vegetable, and a mineral.
cat
broccoli
gold

Solution

Here is one way to answer those questions using Python. Notice that comments are used throughout code. Also, keep in mind that there are multiple ways to solve this same problem.


                      #Declear variables and assign values
                      animal = "cat"
                      vegetable ="broccoli"
                      mineral ="gold"
                      # Display the results.
                      print("Here is a {}, {} and {}." .format(animal, vegetable, mineral))
                      print(animal)
                      print(vegetable)
                      print(mineral)

Program 2-1: String Variables and concatenation

1. Write a program that asks the user to enter a string. The program should then print the following:
(a) The total number of characters in the string
(b) The string repeated 10 times
(c) The first character of the string (remember that string indices start at 0)
(d) The first three characters of the string
(e) The last three characters of the string
(f) The string backwards
(g) The seventh character of the string if the string is long enough and a message otherwise
(h) The string with its first and last characters removed
(i) The string in all caps
(j) The string with every a replaced with an e

Solution

Here is one way to answer those questions using Python. Notice that comments are used throughout code. Also, keep in mind that there are multiple ways to solve this same problem.


                      #Declar variable and input a value.
                      animal =input("What type of animal do you like(Please enter a name not less than 7 xters)")
                      # Display the results.
                      print(animal)
                      print( len(animal))
                      print( 10 * "{}, " .format(animal))
                      print(animal[0])
                      print(animal[:3])
                      print(animal[-3:])
                      print(animal[: : -1])
                      print(animal [6])
                      print(animal[1: -1])
                      print(animal.upper())
                      print(animal.replace("a", "e"))

Program 2-2:Strings

At a certain school, student email addresses end with @student.college.edu, while professor email addresses end with @prof.college.edu. Write a program that first asks the user how many email addresses they will be entering, and then has the user enter those addresses. After all the email addresses are entered, the program should print out a message indicating either that all the addresses are student addresses or that there were some professor addresses entered

Solution

Here is one way to answer those questions using Python. Notice that comments are used throughout code. Also, keep in mind that there are multiple ways to solve this same problem.


                      addresses = eval(input('how many email address you intend to entered: '))
                      student_add = '@student.college.edu'
                      prof_add = '@prof.college.edu'
                      count1 = 0
                      count2 = 0
                      for i in range(addresses):
                      address = input('Enter the email address you want: ')
                      if address == student_add:
                      count1 =count1+1
                      elif address == prof_add:
                      count2 = count2+1
                      d = ('there are {} student address and there {} prof adress')
                      print(d.format(count1, count2))

Program 3: Strings and variables

Companies often try to personalize their offers to make them more attractive. One simple way to do this is just to insert the person’s name at various places in the offer. Of course, companies don’t manually type in every person’s name; everything is computer-generated. Write a program that asks the user for their name and then generates an offer like the one below. For simplicity’s sake, you may assume that the person’s first and last names are one word each.
Enter name: George Washington
Dear George Washington,
I am pleased to offer you our new Platinum Plus Rewards card at a special introductory APR of 47.99%. George, an offer like this does not come along every day, so I urge you to call now toll-free at 1-800-314-1592. We cannot offer such a low rate for long, George, so call right away.

Solution

Here is one way to answer those questions using Python. Notice that comments are used throughout code. Also, keep in mind that there are multiple ways to solve this same problem.

Explanation

Instead of concatenating strings to produce the format we desire, We will call the format() method on the string. Create placeholders, also known as format fields, by using curly braces in the string and pass in values for those fields to format().
By default the first pair of curly braces will be replaced by the first value passed to format(), the second pair of curly braces will be replaced by the second value passed to format(), and so on.
In this example, we will use index numbers {0}to be sure the arguments are placed in the correct placeholders.
we will declare variables and prompt the users to enter their names. we will declear another variable to contain the letter. since it is a multiline string, we will use triple quote and baclslash for better presentation.
Note: Here is one way to answer the questions using Python.
Also, keep in mind there are multiple ways to solve the same problem.

Code


                first_name = input('Please enter your first name: ')
                last_name = input("please enter your last name : ")
                employee_latter = """Dear {0} {1}, \n
                  I am pleased to offer you our new Platinum Plus Rewards card at a special introductory APR of 47.99%.
                  {0}, An offer like this does not come along every day, so I urge you to call now toll-free at
                  1-800-314-1592.
                  We cannot offer such a low rate for long, {0}, so call right away."""
                  print(employee_latter.format(first_name, last_name))
                Sample output
                  Please enter your first name: OLIVER
                  please enter your last name : AWA

                  Dear OLIVER AWA,

                    I am pleased to offer you our new Platinum Plus Rewards card at a special introductory APR of 47.99%.
                      OLIVER, An offer like this does not come along every day, so I urge you to call now toll-free at
                      1-800-314-1592.
                      We cannot offer such a low rate for long, OLIVER, so call right away.

For Quick reference and more researche, please click on the links and documents listed below.
If you do not have Python intalled or IDE where you can test your code, please click Here and use w3school space for testing

A Practical Introduction to Python Programming Heinold.

kupdf.net python programming for beginner jason-cannon.

Python_Quick_Reference_Guide_Heinold .

w3schools python tutorials.

Pleas, get back to our Python Course Here if you find difficulties writing this program