The purpose of this project is to demonstrate an acceptable level of expertise with the basic programming concepts/techniques and Python syntax addressed through the semester. This includes (but is not necessarily limited to): data types, variables, operators, expressions, statements, I/O operations, user-defined and built-in functions, modules and control structures, dictionary and files.The source code should be written in the template files that are being provided with the header and above specification. Details code comments are provided in the given filesInput file: The program starts with reading in all user information from a given input file. The input file contains information of a number of users in the following order: username, first name, last name, password, miniVenmo account number and account balance. Information is separated with ‘|’. o username is a unique information, so no two users will have same username. Sample input file: User gmason has password 123456, account number of BB12 and balance of $1000.  Program flows as below: 1) data is read in from the given input file, 2) it will be saved to a dictionary referred as users where each key is username and the value will be a list containing rest of the information: first name, last name, password, account number and account balance. One example of key-value pair is: 'gmason': ['George', 'Mason', '123456', 'BB12', 1000.0]. 3) user will be presented with a menu and all the operations related to menu options will be performed on this users dictionary.  Main Menu: The program starts with a welcome message and displays main menu. Main menu contains following different options for a user: Main Menu 1. New User 2. Existing User Sign In 3. Exit Following is description of all the options. Black refers to user input and blue is program generated message/options. For better understanding, some comments in orange italics are added surrounded by triangle brackets <>, these are not program generated messages.MAKE SURE TO FOLLOW THE STRUCTURED CODE BELOW AND THE TEXT FILE THAT NEEDS TO BE USEDgmason|George|Mason|123456|BB12|1000 gwash|George|Washington|45678910|AB45|900user_list.txtIMAGES POSTED APPLICATION.PNG AND UTILITY.PNG USE SCREENSHOTS TO STRUCTURE CODE Here is the transcription of the code in the image, formatted for an educational website:---```pythonimport random, stringdef is_username_taken(username, users): """ Returns False if username already exists in users (dictionary) otherwise returns True """ #your code heredef validate_username_password(username, password, users): """ Returns False if username and password do not match or username does not exist, otherwise returns True """ #your code heredef new_user(users): """ Creates a new miniVenmo user with first name, last name, username password, random miniVenmo Account number, initial balance. Returns None """ print('\nNew user') first_name = input('Enter first name: ') last_name = input('Enter last name: ') username = input('Enter username: ') # Check if username is taken if username in users: # if username already taken -> print a message and go back to while # statement for password and break generate_account_number() # Ask for other information # Add key-value pair to the dictionary usersdef validate_existing_user(users): """ Existing user needs to validate with username and password and maximum chances is three. Returns username if login successful otherwise returns false if maximum chances are used. """ max_chance = 0 # your code heredef validate_amount(users, username, amount): """ Returns True if amount to withdraw is less than the current miniVenmo balance otherwise returns False """ # your code heredef deposit(users, username, amount): """ Deposits amount to user's miniVenmo Account and prints informational message """ # your code heredef withdraw(users, username, amount): """ Withdraws amount from user's miniVenmo Account if amount is valid otherwise prints informational message """ # your code heredef summary(users, username): """ Displays current summary of a user Account """ # your code heredef send_money(users, sender, receiver, amount): """ Sends money from sender (username) to receiver (username) if amount is valid AND if receiver username exists """ # your code heredef generate_minivEnmo_account_number(): ```pythonimport firstname_lastname_final_project_utility as u #change the name of the filedef build_dict(): ''' Returns a dictionary created from input file (user_list.txt) where key is an existing username and value is a list of firstname, lastname, account number and balance. ''' #your code heredef write_to_file(users): ''' Writes the updated user information to user_list.txt file ''' #your code here #call this function from Exit optiondef main(): print('\n********** Welcome to miniVenmo! ***************') users = build_dict() option = 0 QUICK_TRANSFER_TO_BANK_AMOUNT = 20 while option!=3: #outer loop - main menu option #your code here #display main menu options option = int(input('Enter option (1-3): ')) if option == 1: u.new_user(users) #create new user elif option == 2: username = u.validate_existing_user(users) if username: #if username is not False while True: #inner while loop - sub menu option #your code here #display sub menu option submenu_option = int(input('Enter option (1-6): ')) if submenu_option == 1: #your code here #define try-except block #ask for amount to deposit #Invalid amount will deposit #Invalid amount (exception) will take the user to the main menu elif submenu_option == 2: #your code here elif submenu_option == 3: #your code here elif submenu_option == 4: #your code here elif submenu_option == 5: #your code here elif submenu_option == 6: print('Signing out. Returning to main menu. ') break #break out of sub-menu option else: print('Invalid Option. Returning to main menu. ') elif option == 3: #your code here else: print('Invalid option! Returning to main menu. ')if __name__ == '__main__': main()```**Explanation:**1. **Import Statement:** - Imports a utility module for handling certain functionalities, suggesting that you should rename

Answered: The purpose of this project is to…

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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Question

The purpose of this project is to demonstrate an acceptable level of expertise with the basic programming concepts/techniques and Python syntax addressed through the semester. This includes (but is not necessarily limited to): data types, variables, operators, expressions, statements, I/O operations, user-defined and built-in functions, modules and control structures, dictionary and files.

The source code should be written in the template files that are being provided with the header and above specification. Details code comments are provided in the given files

Input file: The program starts with reading in all user information from a given input file. The input file contains information of a number of users in the following order: username, first name, last name, password, miniVenmo account number and account balance. Information is separated with ‘|’. o username is a unique information, so no two users will have same username. Sample input file: User gmason has password 123456, account number of BB12 and balance of $1000.  Program flows as below: 1) data is read in from the given input file, 2) it will be saved to a dictionary referred as users where each key is username and the value will be a list containing rest of the information: first name, last name, password, account number and account balance. One example of key-value pair is: 'gmason': ['George', 'Mason', '123456', 'BB12', 1000.0]. 3) user will be presented with a menu and all the operations related to menu options will be performed on this users dictionary.  Main Menu: The program starts with a welcome message and displays main menu. Main menu contains following different options for a user: Main Menu 1. New User 2. Existing User Sign In 3. Exit Following is description of all the options. Black refers to user input and blue is program generated message/options. For better understanding, some comments in orange italics are added surrounded by triangle brackets <>, these are not program generated messages.

MAKE SURE TO FOLLOW THE STRUCTURED CODE BELOW

AND THE TEXT FILE THAT NEEDS TO BE USED

gmason|George|Mason|123456|BB12|1000 gwash|George|Washington|45678910|AB45|900

user_list.txt

IMAGES POSTED APPLICATION.PNG AND UTILITY.PNG USE SCREENSHOTS TO STRUCTURE CODE

Here is the transcription of the code in the image, formatted for an educational website:

---

```python
import random, string

def is_username_taken(username, users):
"""
Returns False if username already exists in users (dictionary)
otherwise returns True
"""
#your code here

def validate_username_password(username, password, users):
"""
Returns False if username and password do not match or username
does not exist, otherwise returns True
"""
#your code here

def new_user(users):
"""
Creates a new miniVenmo user with first name, last name, username
password, random miniVenmo Account number, initial balance.
Returns None
"""
print('\nNew user')
first_name = input('Enter first name: ')
last_name = input('Enter last name: ')
username = input('Enter username: ')

# Check if username is taken
if username in users:
# if username already taken -> print a message and go back to while
# statement for password and break
generate_account_number()
# Ask for other information
# Add key-value pair to the dictionary users

def validate_existing_user(users):
"""
Existing user needs to validate with username and password and
maximum chances is three. Returns username if login successful
otherwise returns false if maximum chances are used.
"""

max_chance = 0
# your code here

def validate_amount(users, username, amount):
"""
Returns True if amount to withdraw is less than the
current miniVenmo balance otherwise returns False
"""
# your code here

def deposit(users, username, amount):
"""
Deposits amount to user's miniVenmo Account and prints
informational message
"""
# your code here

def withdraw(users, username, amount):
"""
Withdraws amount from user's miniVenmo Account if amount
is valid otherwise prints informational message
"""
# your code here

def summary(users, username):
"""
Displays current summary of a user Account
"""
# your code here

def send_money(users, sender, receiver, amount):
"""
Sends money from sender (username) to receiver (username)
if amount is valid AND if receiver username exists
"""
# your code here

def generate_minivEnmo_account_number():

```python
import firstname_lastname_final_project_utility as u #change the name of the file

def build_dict():
'''
Returns a dictionary created from input file (user_list.txt)
where key is an existing username and
value is a list of firstname, lastname, account number and balance.
'''
#your code here

def write_to_file(users):
'''
Writes the updated user information to user_list.txt file
'''
#your code here
#call this function from Exit option

def main():
print('\n********** Welcome to miniVenmo! ***************')
users = build_dict()
option = 0
QUICK_TRANSFER_TO_BANK_AMOUNT = 20

while option!=3: #outer loop - main menu option
#your code here
#display main menu options
option = int(input('Enter option (1-3): '))

if option == 1:
u.new_user(users) #create new user

elif option == 2:
username = u.validate_existing_user(users)

if username: #if username is not False
while True: #inner while loop - sub menu option
#your code here
#display sub menu option
submenu_option = int(input('Enter option (1-6): '))
if submenu_option == 1:
#your code here
#define try-except block
#ask for amount to deposit
#Invalid amount will deposit #Invalid amount (exception) will take the user to the main menu

elif submenu_option == 2:
#your code here

elif submenu_option == 3:
#your code here

elif submenu_option == 4:
#your code here

elif submenu_option == 5:
#your code here

elif submenu_option == 6:
print('Signing out. Returning to main menu. ')
break #break out of sub-menu option

else:
print('Invalid Option. Returning to main menu. ')

elif option == 3:
#your code here

else:
print('Invalid option! Returning to main menu. ')

if __name__ == '__main__':
main()
```

**Explanation:**

1. **Import Statement:**
- Imports a utility module for handling certain functionalities, suggesting that you should rename

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