Python Programming: An Introduction to Computer Science, 3rd Ed.
Python Programming: An Introduction to Computer Science, 3rd Ed.
3rd Edition
ISBN: 9781590282755
Author: John Zelle
Publisher: Franklin, Beedle & Associates
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Chapter 12, Problem 3PE
Program Plan Intro

Tracking conference attendees

Program plan:

  • Import the package.
  • Create a class “Conference_Manager”,
    • Define the “_init_()” function,
      • Create empty list.
      • Open the input file in read mode.
      • Read all the characters from the file using “read()”.
      • Parse the json string using “json_loads()”.
      • Create a “for” loop to iterate all the keys which are obtained from “json_object”.
        • Assign initial values by invoking “_init_()”.
        • Append the value at the end of the list.
      • Close the input file.
    • Define the getter method “get_JSON()”,
      • Return the key, value pairs get from “json_object”.
    • Define the getter method “get_Attendee()”,
      • Create “for” loop to iterate over elements of list.
        • Check whether the value return from “get_Name()” is equal to the value stored in “name,
          • Return the list.
    • Define the getter method “find_ByState()”,
      • Create a list.
      • Create “for” loop to iterate over elements of list.
        • Check whether the value return from “get_State()” is equal to the value stored in “state”,
          • If it is true, append the value to the end of the list.
      • Return the list.
    • Define the getter method “make_Attendee()”,
      • Assign the value to the list return from “_init_ ()” method from Attendee class.
      • Append the value to the end of the list.
    • Define the method “del_Attendee()”,
      • Create for loop,
        • Check whether the name is return from “get_name()”,
          • If it is true, remove the element using “pop()”.
    • Define the method “update_Conference()”,
      • Create a list.
      • Create for loop,
        • Check whether the name is return from “get_name()”,
          • Append the value to the end of the list.
            • Open the output file in write mode,
              • Serialize the object as a JSON formatted stream using “json_dump()”.
  • Create a class “Attendee”,
    • Define the function “_init_()”,
      • Assign the initial values for the variables.
    • Define the getter method “get_Name()” to return the value stored in “name”.
    • Define the getter method “get_Company()” to return the value stored in “company”.
    • Define the getter method “get_State()” to return the value stored in “state”.
    • Define the getter method “get_Email()” to return the value stored in “email”.
    • Define the method “display_Info()” to print the formatted output.
  • Define the “main()” function,
    • Call the constructor to initialize the values.
    • Call “make_Attendee()” function.
    • Assign the value return from “get_Attendee()”.
    • Assign the value return from “find_ByState()”.
    • Print the value return from “get_Company()”.
    • Print the value return from “get_Name()”.
    • Print the value return from “get_Sate()”.
    • Print the value return from “get_Email()”.
    • Call the function “display_Info()”.
    • Create for loop,
      • Print the value return from “get_Name()”.
  • Call the “main()” function.

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