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.