Question

The Objectives are to:

1. Use IDLE IDE for Python.
2. Develop a few simple Python programs and show they will translate and run.
3. Experience error messages when you enter bad syntax the interpreter cannot understand.

Discussion:

The best way to learn Python (or any programming language) is to write & run Python programs. In this lab you will enter two programs, and run them to produce the output. Then deliberately insert syntax errors to see what kinds of error messages you get. Finally, you will be given a "specification" of a simple problem to solve. From this specification create a program, and run it against a set of specified test values. Properly document the last program so another person can read it and determine its purpose.

Specifications:

1.  Using IDLE IDE to create a source code file named welcome.py, enter the following Python code, translate it and run it.

def main():

    print("Welcome to the wonderful world of Python programming!")

main()

After a successful run, capture its output and close its workspace.

2.   Perform the same steps described in part 1 for the following program:

def main():

    integer1 = int(input("Enter first integer"))     # prompt and enter the first integer

    integer2 = int(input("Enter second integer"))    # prompt and enter the second integer

    sum =    integer1 + integer2                     # generate and assign the sum

    print("The sum of", integer1, "and", integer2,

"is", sum)                                     # print sum

    difference = integer1 – integer2                # assignment of difference

    print("The difference of", integer1, "minus",

integer2, "is", difference)                    # print difference

main()

3. "Comment-out" the second line of the second program so it looks like this:

          # integer1 = int(input("Enter first integer"))     # prompt for and input first integer

Try to run the modified program and record (and hand in) the error message(s).

4. Remove the comment symbol from the previous part (i.e., restore your program to

its previous working condition) and then comment-out the sum assignment statement like this:

                  # sum =    integer1 + integer2                            # assignment of sum

           

            Run the modified program and capture the error message(s) you see.

5. Restore your working program again and then comment-out the code line,

                        # difference = integer1 – integer2                 # assignment of difference

Once again run the modified program and capture the error message(s) you see. Explain why the error message you got when commenting out the sum statement differs than when commenting out the difference statement.

  6.  Problem:  Design, Develop, Integrate, and Test (DDI&T) a Python program that converts a Fahrenheit temperature into its Celsius temperature equivalent.

          

             The formula for converting Fahrenheit to Celsius is,

                        Celsius = 5.0/9.0*(Fahrenheit – 32.0)

Your program should prompt the user for a Fahrenheit temperature, convert it to Celsius and then output both values in the following format:

         Fahrenheit Temperature = <Fahrenheit value>

         Celsius Temperature = <Celsius value>

            Fully test your program with the following set of Fahrenheit temperatures:

         75.5, 32.0, -459.4, -40.0, 0.0, 100.0, and 212.0

Note that the temperature values are both input and output with one decimal of precision after the decimal point.

           

Documentation Guidelines:

Use good programming style (e.g., indentation for readability) and document each of your program parts with the following items (the items shown between the '<' and '>' angle brackets are only placeholders. You should replace the placeholders and the comments between them with your specific information). Your cover sheet should have some of the same information, but what follows should be at the top of each program's sheet of source code. Some lines of code should have an explanation of what is to be accomplished, this will allow someone supporting your code years later to comprehend your purpose. Be brief and to the point. Start your design by writing comment lines of pseudocode. Once that is complete, begin adding executable lines. Finally run and test your program.

    

#===================================================================

#    CS119T – Unit 1-Submission Node – IDEs and Debugging

#    Filename: Unit 1 Submission Node: my-unit1-submission-node.doc

#    Author: <Your name>

#    Purpose: Demonstrate basic Python programming in the IDLE

#               development environment

#               by following steps 1 through 6 above.

#===================================================================

Deliverable(s):

Your deliverable should be a Word document with screenshots showing the code you have created, and discuss the issues that you had for this project related to AWS and/or Python IDE and how you solved them for all of the programs listed above as well as the inputs and outputs from running them. For parts 3, 4 and 5 where you deliberately "seeded" errors into your code, capture and turn in the error messages you encountered when attempting to translate and run these errant programs.  Include a cover sheet with the hardcopy of your labs when you turn them in to the instructor.

Answer 1

Dear Student ,

As per the requirement submitted above , kindly find the below solution.

welcome.py :

def main(): #function
#print message
print("Welcome to the wonderful world of Python programming!")

main() #function call
=========================

Output :

screen 1:welcome.py

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Question 2 :

=================

Output :

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Question 3 :Error message screen

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Question 4 :

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Question 5 :

Explanation :

• sum = integer1 + integer2
• when above line is commented even though getting output because here sum is inbuilt function in python that is considered.
• But in case on difference = integer1-integer2 , there is no inbuilt function like difference and hence getting the error.

**********************************

Question 6 :

temp.py

#Python program that converts a Fahrenheit temperature into its Celsius temperature equivalent.
def main(): #function
# asking user to enter Fahrenheit temperature
Fahrenheit = float(input("Enter Fahrenheit temperature : "))   
# converting temprature in celisus
Celsius = 5.0/9.0*(Fahrenheit - 32.0)
# print Fahrenheit Temperature
print("Fahrenheit Temperature = ",str(Fahrenheit))
# print Celsius Temperature
print("Celsius Temperature = ",str(round(Celsius,1)))   

main() #function call

Screen for Indentation :

*******************************

Output :

Screen 1 :Screen showing F to C conversion

NOTE : PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.