NOTE: LANGUAGE IS PYTHON CS160 Computer Science Lab 17 Objectives Work with dictionaries Work with functions...

Question

Question

NOTE: LANGUAGE IS PYTHON CS160 Computer Science Lab 17 Objectives Work with dictionaries Work with functions...

NOTE: LANGUAGE IS PYTHON

CS160 Computer Science Lab 17

Objectives

Work with dictionaries Work with functions Work with files

Overview

This lab will have you store the birthdays for a group of people. This program will store the information with the focus on the date of the month and not on the individual. The point of this program is to be able to see who has a birthday on a given day or to create a table of birthdays, in order of occurrence, for a given month. To do you will need a dictionary that uses the birth date for the key and the name for the value.

To ensure that every gets recognized on their birthday, since someone always brings in treats or cake on a birthday, we will only allow for a single birthday per day. If a specific day is already taken then that person should pick a different date.

Specifics

To get started create a text file using any text editor that will store a series of names and their birthdays. Each line will have a name, a colon separator, and a date. There is no need to store the month, all entries in any given file will be from the same month. An example of a data file, such as “DecemberBirthdays.txt”, might be:

Scott:1
Bob:10
Sue:12
Alex:14
Alice:14
Fred:22

Use the provided code to display a menu. This will accept the user’s choice of what they wish to do within the program and return the integer value associated with the menu choice. The menu options will be opening a file, adding a name, searching by date, displaying all birthdays for the month, and exiting the program. On screen the menu might look like:

What would you like to do? 1. Open a data file
2. Add new names
3. Search by date

4. Display all birthdays for the month 5. Exit program

Your choice?

The menu will allow the user to enter a value between 1 and 5. After each valid entry, perform the specified action and then present the menu again. The primed loop example used for data entry will work well for this as well. The pseudo-code for using the input returned from the menu might be:

choice = showMenu()
while choice != 5

if choice == 1:
open file and return a dictionary with the info

elif choice == 2:
allow the user to add new names/birthdays

   elif choice == 3:
      ask for a date and display the associated name

   elif choice == 4:
      display all dates/names for the month

choice = showMenu()
write the dictionary back to the original fileSpecifics for menu options
Each menu option (1-4) should be implemented in a function.

When reading a data file, ask for the name of a file and then add that information from the file into a dictionary. Ask for the file name in any manner you have done so this year. Ask for the file BEFORE calling the function which reads the data file.

When adding new entries, ask for a name and a date and then add them to the dictionary. If the date entered already has a name, state that the date is taken and that the info will not be added to the dictionary and exit the function. Only add one name/birthday per call of the function – no loop needed in this function.

When searching by date, allow the user to enter the date. Then display the name associated with that specified date. If no one has a birthday on that date display a message stating so. Continue to perform searches until the user enters a date of 0. You will need a loop in this function.

Finally, when the user chooses to exit the program write all the information from the dictionary out to the filename specified earlier in the program. Write out one entry per person. Don’t ask for a new file name, use the file name the user provided when opening the file.

An example of running the program might be something like the following. The program output is in blue. This is not actual output. And remember that the dates will not necessarily be in order. We’ve discussed in class how to print a dictionary in sorted order. Take that as a challenge, but NOT A REQUIREMENT for the lab. If you want to have a little more fun, offer the choice of printing out the information sorted by name or date. Again, not a requirement, but an interesting challenge.

What would you like to do? 1. Open a data file
2. Add new names
3. Search by date

4. Display all birthdays for the month 5. Exit program

Your choice? 1

<<user selects a file using input() or FileUtils.selectOpenFile ()>>

What would you like to do? 1. Open a data file
2. Add new names
3. Search by date

4. Display all birthdays for the month 5. Exit program

Your choice? 4

Tom 1 Bob 10 Scott 20

What would you like to do? 1. Open a data file
2. Add new names
3. Search by date

4. Display all birthdays for the month 5. Exit program

Your choice? 2
Name to add: Angie

Date for Angie: 30

Angie has been added to the birthday list

What would you like to do? 1. Open a data file
2. Add new names
3. Search by date

4. Display all birthdays for the month 5. Exit program

Your choice? 4

Tom 1 Bob 10 Scott 20 Angie 30

engineering Computer-Science

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

CODE:

FILENAME = ""

def showMenu():
print()
print('Menu')
print('------------------------------')
print('1. Open a data file ')
print('2. Add new names ')
print('3. Search by date')
print('4. Display all birthdays for the month ')
print('5. Exit program')
print()
choice = int(input('Enter the choice: '))
return choice

def openFile():
global FILENAME
FILENAME = input('Enter the name of the file: ')
file = open(FILENAME,'r')
data = file.readlines()
dic={}
for i in data:
i = i.rstrip()
l = i.split(":")
if l[1] in dic.keys():
print("Entry",i,"exists , Hence ignored ")
else:
dic[l[1]] = l[0]
file.close()
return dic

def addNew(dic):
name = input("Name to Add: ")
msg = "Date for "+name+": "
date = input(msg)
if date in dic.keys():
print("Entry for",date,"exists , Hence ignored ")
else:
dic[date] = name
print(name,"has been added to the birthday list")
return dic

def search(dic):
date = input("Enter the date:")
if date in dic.keys():
print(date,":",dic[date])
else:
print("No Entry Found")

def display(dic):
for key in sorted(dic.keys()):
print(key,":",dic[key])

#Called when user inputs 5
def savFile(dic):
file = open(FILENAME,'w')
for key in sorted(dic.keys()):
file.write(dic[key]+":"+key+"\n")
file.close()

#Main function
def main():
choice=0
info={}
while True:
choice = showMenu()
if choice == 1:
info = openFile()
elif choice == 2:
info = addNew(info)
elif choice == 3:
search(info)
elif choice == 4:
display(info)
elif choice == 5:
savFile(info)
return
main()

C/Users/Hoque/Desktop/cheqa/pixel art- Spyder (Python 3.7) Eile Edit Search Saurce Bun Debu Consales Projects Tools View Help C/Users/Hoque/Desktop/chega/pixel art- Spyder (Python 3.7) Eile Edit Search Saurce Bun Debu Consales Projects Tools View Help $CAUSers Roque,Desktop\DecemberBirthdays. bt- Sublime Text (UNREGISTERED) Eile Edit Selection Find View Goto Tools Project Pre$ In [21 runfileC:/Users/Rogue/Desktop/birthdays.py, wdir=C:/Users /Rogue/Desktop Menu ----- 1. Ocen a data file 3 Seanch h da Name to Add: iack Date for jack: 3 jack has been added to the birthday list Menu .--- 1. Open data file 3. Search by date 4. Scott 18 12 Sue 22 Fred 3 jack Menu file nane 3. Search by date birthdays for the month 5. Exit prperan Fnter the choice: 3 E

Add a comment

Answer 2

NOTE: LANGUAGE IS PYTHON CS160 Computer Science Lab 17 Objectives Work with dictionaries Work with functions...

Homework Answers

Add Answer to:
NOTE: LANGUAGE IS PYTHON CS160 Computer Science Lab 17 Objectives Work with dictionaries Work with functions...

Post as a guest

Earn Coins