In Python Please check the pictures first. Write a program that keeps names and email addresses in a dictionary as key-value pairs. The program should display a menu that lets the user look up a person’s email address, add a new name and email address, change an existing email address, and delete an existing name and email address. The program should save the data stored in a dictionary to a file when the user exits the program. Each time the program starts, it should retrieve the data from the file and store it in a dictionary. You Must create and use at least 5 meaningful functions. A function to display a menu A function to look up a person’s email address A function to add a new name and email address A function to change an email address A function to delete a name and email address. Check the Your program should check user input; for example, if the user wants to delete a name that does not exist in the dictionary, you should print something like: the name is not in the database. A sample one run is shown below. Hints for how the format of the program HAVE to be written : a function to print the menu a function to look up an email address (person) a function to add a name and email (person, email) a function to change email (person) a function to delete a name and email address (person) flag = -1 read data from a file and store it in a dictionary – name email get user option and store it in variable flag while flag ! = 5            multi – way selection to process user option (5 options)            if flag == 1            if flag == 2            if flag == 3            if flag == 4            if flag == 5 call function menu again get user option again write the data in the dictionary in a file   This is the Required Output example:   Menu ---------------------------------------- 1. Look up an email address 2. Add a new name and email address 3. Change an existing email address 4. Delete a name and email address 5. Quit the program   Enter your choice: 2 Enter name: John Enter email address: John@yahoo.com That name already exists   Menu ---------------------------------------- 1. Look up an email address 2. Add a new name and email address 3. Change an existing email address 4. Delete a name and email address 5. Quit the program   Enter your choice: 2 Enter name: Jack Enter email address: Jack@yahoo.com Name and address have been added   Menu ---------------------------------------- 1. Look up an email address 2. Add a new name and email address 3. Change an existing email address 4. Delete a name and email address 5. Quit the program   Enter your choice: 1 Enter a name: Sam The specified name was not found   Menu ---------------------------------------- 1. Look up an email address 2. Add a new name and email address 3. Change an existing email address 4. Delete a name and email address 5. Quit the program   Enter your choice: 1 Enter a name: Jack Name: Jack Email: Jack@yahoo.com   Menu ---------------------------------------- 1. Look up an email address 2. Add a new name and email address 3. Change an existing email address 4. Delete a name and email address 5. Quit the program   Enter your choice: 3 Enter name: John Enter the new address: John@wayne.edu Information updated   Menu ---------------------------------------- 1. Look up an email address 2. Add a new name and email address 3. Change an existing email address 4. Delete a name and email address 5. Quit the program   Enter your choice: 1 Enter a name: John Name: John Email: John@wayne.edu   Menu ---------------------------------------- 1. Look up an email address 2. Add a new name and email address 3. Change an existing email address 4. Delete a name and email address 5. Quit the program   Enter your choice: 4 Enter name: Sam The specified name was not found   Menu ---------------------------------------- 1. Look up an email address 2. Add a new name and email address 3. Change an existing email address 4. Delete a name and email address 5. Quit the program   Enter your choice: 4 Enter name: Jack Information deleted   Menu ---------------------------------------- 1. Look up an email address 2. Add a new name and email address 3. Change an existing email address 4. Delete a name and email address 5. Quit the program   Enter your choice: 1 Enter a name: Jack The specified name was not found   Menu ---------------------------------------- 1. Look up an email address 2. Add a new name and email address 3. Change an existing email address 4. Delete a name and email address 5. Quit the program   Enter your choice: 5 Information saved >>>  Please check the pictures and fix the code. Upvote for following the required steps and working code. Thank You.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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In Python

Please check the pictures first.

Write a program that keeps names and email addresses in a dictionary as key-value pairs.

The program should display a menu that lets the user look up a person’s email address, add a new name and email address, change an existing email address, and delete an existing name and email address. The program should save the data stored in a dictionary to a file when the user exits the program. Each time the program starts, it should retrieve the data from the file and store it in a dictionary.

You Must create and use at least 5 meaningful functions.

  • A function to display a menu
  • A function to look up a person’s email address
  • A function to add a new name and email address
  • A function to change an email address
  • A function to delete a name and email address.

Check the Your program should check user input; for example, if the user wants to delete a name that does not exist in the dictionary, you should print something like: the name is not in the database. A sample one run is shown below.

Hints for how the format of the program HAVE to be written :

a function to print the menu

a function to look up an email address (person)

a function to add a name and email (person, email)

a function to change email (person)

a function to delete a name and email address (person)

flag = -1

read data from a file and store it in a dictionary – name email

get user option and store it in variable flag

while flag ! = 5

           multi – way selection to process user option (5 options)
           if flag == 1

           if flag == 2

           if flag == 3

           if flag == 4

           if flag == 5

call function menu again

get user option again

write the data in the dictionary in a file

 

This is the Required Output example:

 

Menu

----------------------------------------

1. Look up an email address

2. Add a new name and email address

3. Change an existing email address

4. Delete a name and email address

5. Quit the program

 

Enter your choice: 2

Enter name: John

Enter email address: John@yahoo.com

That name already exists

 

Menu

----------------------------------------

1. Look up an email address

2. Add a new name and email address

3. Change an existing email address

4. Delete a name and email address

5. Quit the program

 

Enter your choice: 2

Enter name: Jack

Enter email address: Jack@yahoo.com

Name and address have been added

 

Menu

----------------------------------------

1. Look up an email address

2. Add a new name and email address

3. Change an existing email address

4. Delete a name and email address

5. Quit the program

 

Enter your choice: 1

Enter a name: Sam

The specified name was not found

 

Menu

----------------------------------------

1. Look up an email address

2. Add a new name and email address

3. Change an existing email address

4. Delete a name and email address

5. Quit the program

 

Enter your choice: 1

Enter a name: Jack

Name: Jack

Email: Jack@yahoo.com

 

Menu

----------------------------------------

1. Look up an email address

2. Add a new name and email address

3. Change an existing email address

4. Delete a name and email address

5. Quit the program

 

Enter your choice: 3

Enter name: John

Enter the new address: John@wayne.edu

Information updated

 

Menu

----------------------------------------

1. Look up an email address

2. Add a new name and email address

3. Change an existing email address

4. Delete a name and email address

5. Quit the program

 

Enter your choice: 1

Enter a name: John

Name: John

Email: John@wayne.edu

 

Menu

----------------------------------------

1. Look up an email address

2. Add a new name and email address

3. Change an existing email address

4. Delete a name and email address

5. Quit the program

 

Enter your choice: 4

Enter name: Sam

The specified name was not found

 

Menu

----------------------------------------

1. Look up an email address

2. Add a new name and email address

3. Change an existing email address

4. Delete a name and email address

5. Quit the program

 

Enter your choice: 4

Enter name: Jack

Information deleted

 

Menu

----------------------------------------

1. Look up an email address

2. Add a new name and email address

3. Change an existing email address

4. Delete a name and email address

5. Quit the program

 

Enter your choice: 1

Enter a name: Jack

The specified name was not found

 

Menu

----------------------------------------

1. Look up an email address

2. Add a new name and email address

3. Change an existing email address

4. Delete a name and email address

5. Quit the program

 

Enter your choice: 5

Information saved

>>> 

Please check the pictures and fix the code.

Upvote for following the required steps and working code. Thank You.

File Edit Format Run Options Window Help
File
Home
Insert
Design
Layout
References
Mailings
Review
View
Help
Grammarly
32
33
34
35 flag = -1
36 record = {}
37 file = open ("record.txt", "r")
38 lines = file.readlines ()
39 for line in lines:
40
41
42
else:
print ("The specified name was not found")
You Must create and use at least 5 meaningful functions.
A function to display a menu
A function to look up a person's email address
A function to add a new name and email address
A function to change an email address
A function to delete a name and email address.
x = line. split(" ")
name = x[0]
email = x[1]
record[name]
Your program should check user input; for example, if the user wants to delete a name that does
not exist in the dictionary, you should print something like: the name is not in the database. A
sample one run is shown below.
43
= email
44 file.close ()
45
46 printmenu ()
47 flag = int (input ("Enter your choice: "))
48 while True:
49
50
51
52
53
54
55
56
57
58
59
Hints for how the format of the program HAVE be written :
a function to print the menu
a function to look up an email address (person)
af unction to add a name and email (person, email)
if flag == 1:
name
input ("Enter a name: ")
lookup (record, name)
elif flag == 2:
name = input ("Enter name: ")
email = input ("Enter email address: ")
add (record, name, email)
elif flag == 3:
name = input ("Enter name: ")
email = input ("Enter the new address: ")
update (record, name, email)
elif flag == 4:
a function to change email (person)
a function to delete a name and email address (person)
flag = -1
read data from a file and store it in a dictionary – name email
get user option and store it in variable flag
-
while flag ! = 5
multi – way selection to process user option (5 options)
if flag
if flag
if flag
if flag
60
61
62
63
64
65
66
= input ("Enter a name: ")
name
== 1
delete (record, name)
elif flag == 5:
f = open ("record.txt", "w+")
for key, value in record.items () :
1 = key+" "+value+"\n"
f.write (1)
2
==
3
4
if flag
call function menu again
get user option again
==
67
68
f.close ()
69
print ("Information saved")
70
71
72
break
printmenu ()
flag = int (input ("Enter your choice: "))
write the data in the dictionary in a file
73
Page 1 of 4
843 words
English (United States)
D Focus
100%
Transcribed Image Text:File Edit Format Run Options Window Help File Home Insert Design Layout References Mailings Review View Help Grammarly 32 33 34 35 flag = -1 36 record = {} 37 file = open ("record.txt", "r") 38 lines = file.readlines () 39 for line in lines: 40 41 42 else: print ("The specified name was not found") You Must create and use at least 5 meaningful functions. A function to display a menu A function to look up a person's email address A function to add a new name and email address A function to change an email address A function to delete a name and email address. x = line. split(" ") name = x[0] email = x[1] record[name] Your program should check user input; for example, if the user wants to delete a name that does not exist in the dictionary, you should print something like: the name is not in the database. A sample one run is shown below. 43 = email 44 file.close () 45 46 printmenu () 47 flag = int (input ("Enter your choice: ")) 48 while True: 49 50 51 52 53 54 55 56 57 58 59 Hints for how the format of the program HAVE be written : a function to print the menu a function to look up an email address (person) af unction to add a name and email (person, email) if flag == 1: name input ("Enter a name: ") lookup (record, name) elif flag == 2: name = input ("Enter name: ") email = input ("Enter email address: ") add (record, name, email) elif flag == 3: name = input ("Enter name: ") email = input ("Enter the new address: ") update (record, name, email) elif flag == 4: a function to change email (person) a function to delete a name and email address (person) flag = -1 read data from a file and store it in a dictionary – name email get user option and store it in variable flag - while flag ! = 5 multi – way selection to process user option (5 options) if flag if flag if flag if flag 60 61 62 63 64 65 66 = input ("Enter a name: ") name == 1 delete (record, name) elif flag == 5: f = open ("record.txt", "w+") for key, value in record.items () : 1 = key+" "+value+"\n" f.write (1) 2 == 3 4 if flag call function menu again get user option again == 67 68 f.close () 69 print ("Information saved") 70 71 72 break printmenu () flag = int (input ("Enter your choice: ")) write the data in the dictionary in a file 73 Page 1 of 4 843 words English (United States) D Focus 100%
Project Python.py - C:/Users/17737/OneDrive/Desktop/Project Python.py (3.8.4)
*Python 3.8.4 Shell*
File Edit Format Run Options Window Help
1 def printmenu () :
File Edit Shell Debug Options Window Help
Python 3.8.4 (tags/v3.8.4:dfa645a, Jul 13 2020, 16:46:45) [MSC v.1924 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license () " for more information.
print ("Menu")
print ('
print ("1. Look up an email address")
print ("2. Add a new name and email address")
print ("3. Change an existing email address")
print ("4. Delete a name and email address")
print ("5. Quit the program")
--")
>>>
4
%=== RESTART: C:/Users/17737/OneDrive/Desktop/Project Python.py
Traceback (most recent call last):
File "C:/Users/17737/OneDrive/Desktop/Project Python.py", line 42, in <module>
email = x[1]
IndexError: list index out of range
>>> getting an error on line 42
9.
10 def lookup (record, name) :
11
12
record - Notepad
if name in record:
print ("Name : ", name)
print ("Email:", record[name])
File Edit Format View Help
13
Hom John@yahoo.com
Jack@yahoo.com
John@wayne.edu
14
else:
File
15
print ("The specified name was not found")
16
17 def add (record, name, email):
if name in record:
18
19
20
21
22
23
24 def update (record, name, email):
25
26
27
28 def delete (record, name) :
29
30
31
32
33
34
35 flag = -1
36 record = {}
37 file = open ("record.txt", "r")
38 lines = file.readlines ()
39 for line in lines:
print ("The name already exists")
else:
Ln 2, Col 15
100%
Windows
record[name] = email
print ("Name and address have been added")
Write a program that keeps names and email addresses in a dictionary as key-value pairs.
The program should display a menu that lets the user look up a person's email address, add a
new name and email address, change an existing email address, and delete an existing name and
email address. The program should save the data stored in a dictionary to a file when the user
exits the program. Each time the program starts, it should retrieve the data from the file and store
it in a dictionary.
record[name] = email
print ("Information updated")
if name in record:
del record[name]
print ("Information deleted")
You Must create and use at least 5 meaningful functions.
else:
A function to display a menu
A function to look up a person's email address
A function to add a new name and email address
A function to change an email address
A function to delete a name and email address.
print ("The specified name was not found")
40
41
x = line. split(" ")
name = x[0]
email = x[1]
Your program should check user input; for example, if the user wants to delete a name that does
not exist in the dictionary, you should print something like: the name is not in the database. A
sample one run is shown below.
42
是
Transcribed Image Text:Project Python.py - C:/Users/17737/OneDrive/Desktop/Project Python.py (3.8.4) *Python 3.8.4 Shell* File Edit Format Run Options Window Help 1 def printmenu () : File Edit Shell Debug Options Window Help Python 3.8.4 (tags/v3.8.4:dfa645a, Jul 13 2020, 16:46:45) [MSC v.1924 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license () " for more information. print ("Menu") print (' print ("1. Look up an email address") print ("2. Add a new name and email address") print ("3. Change an existing email address") print ("4. Delete a name and email address") print ("5. Quit the program") --") >>> 4 %=== RESTART: C:/Users/17737/OneDrive/Desktop/Project Python.py Traceback (most recent call last): File "C:/Users/17737/OneDrive/Desktop/Project Python.py", line 42, in <module> email = x[1] IndexError: list index out of range >>> getting an error on line 42 9. 10 def lookup (record, name) : 11 12 record - Notepad if name in record: print ("Name : ", name) print ("Email:", record[name]) File Edit Format View Help 13 Hom John@yahoo.com Jack@yahoo.com John@wayne.edu 14 else: File 15 print ("The specified name was not found") 16 17 def add (record, name, email): if name in record: 18 19 20 21 22 23 24 def update (record, name, email): 25 26 27 28 def delete (record, name) : 29 30 31 32 33 34 35 flag = -1 36 record = {} 37 file = open ("record.txt", "r") 38 lines = file.readlines () 39 for line in lines: print ("The name already exists") else: Ln 2, Col 15 100% Windows record[name] = email print ("Name and address have been added") Write a program that keeps names and email addresses in a dictionary as key-value pairs. The program should display a menu that lets the user look up a person's email address, add a new name and email address, change an existing email address, and delete an existing name and email address. The program should save the data stored in a dictionary to a file when the user exits the program. Each time the program starts, it should retrieve the data from the file and store it in a dictionary. record[name] = email print ("Information updated") if name in record: del record[name] print ("Information deleted") You Must create and use at least 5 meaningful functions. else: A function to display a menu A function to look up a person's email address A function to add a new name and email address A function to change an email address A function to delete a name and email address. print ("The specified name was not found") 40 41 x = line. split(" ") name = x[0] email = x[1] Your program should check user input; for example, if the user wants to delete a name that does not exist in the dictionary, you should print something like: the name is not in the database. A sample one run is shown below. 42 是
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