def open_account(account_num_list, deposit_list, firstname_list,
lastname_list): # 6. This func opens a new account
something_is_wrong = True
user_random_account_no = 0
while something_is_wrong:
user_random_account_no = randrange(
100000, 999999
) # a new bank account number is created using random range func
if str(
user_random_account_no
) in account_num_list: # this is to check if account number already exists
something_is_wrong = True # if it dies, then get another random number by looping again
else:
something_is_wrong = False # of the random account number is unique, then continue through the program
deposit_input = validation_code.read_nonnegative_float(
'Please enter the amount you would like to deposit: ')
firstname_input = validation_code.read_nonempty_alphabetical_string(
'What is your first name ? ') # get user name
lastname_input = validation_code.read_nonempty_string(
'What is your last name? ') # asking the user for last name
account_num_list.append(str(user_random_account_no))
deposit_list.append(deposit_input)
firstname_list.append(firstname_input)
lastname_list.append(lastname_input)
write_to_file(account_num_list, deposit_list, firstname_list,
lastname_list)
lines()
print('The following details of the account have been added:')
print('Account no.\t Balance\t Full name')
print(user_random_account_no, '\t\t', deposit_input, '\t', firstname_input,
lastname_input)
lines()
def withdraw_money(account_num_list, deposit_list, firstname_list,
lastname_list): # 9. Function for withdrawing money
account_number = validation_code.read_nonnegative_integer(
'Please enter the account number you would like to draw '
'money from: ')
# Re-using the function of user input for account number that is used previously in close_account() function.
something_is_wrong = True
while something_is_wrong: # in case user does not have enough balance, he can retry and enter a different amount
if str(
account_number
) in account_num_list: # checking if account number is in the account number list
index_of_account_number = account_num_list.index(
str(account_number)) # position of account number in list
user_deposit = deposit_list[
index_of_account_number] # storing user's deposit in a variable for later use
user_firstname = firstname_list[
index_of_account_number] # storing user's first name in a variable
user_lastname = lastname_list[
index_of_account_number] # storing user's last name in a variable
lines()
print('Account details:', account_number, user_deposit,
user_firstname, user_lastname) # display info
lines()
amount_to_withdraw = validation_code.read_nonnegative_float(
'How much would you like to withdraw from your '
'account ' + user_firstname + '? ') # withdraw
if float(
user_deposit
) >= amount_to_withdraw: # checking if the amount withdrawn is not bigger than balance
user_deposit = float(
user_deposit
) - amount_to_withdraw # deducting the amount requested by user
deposit_list[
index_of_account_number] = user_deposit # changing the user's balance on the final list
lines()
print('Updated account details: ', account_number,
user_deposit, user_firstname, user_lastname)
lines()
write_to_file(account_num_list, deposit_list, firstname_list,
lastname_list)
something_is_wrong = False
else:
lines()
print(
'You have insufficient funds') # telling user what's wrong
lines()
more = validation_code.read_nonempty_string(
'Would you like another attempt to enter a different amount'
' (Y/N)? ')
# asking user if they would like to withdraw a different amount for the same account
if more.upper() == 'Y' or more.startswith(
'y') or more.startswith('Y'):
something_is_wrong = True
else:
something_is_wrong = False
def deposit_money(account_num_list, deposit_list, firstname_list,
lastname_list):
something_is_wrong = True
while something_is_wrong:
account_number = validation_code.read_nonnegative_integer(
'Enter the account number you would like to deposit '
'money into: ')
# Re-using the function of user input for account number that is used previously in close_account() function.
if str(
account_number
) in account_num_list: # checking if account number is in the file's account number list
index_of_account_number = account_num_list.index(
str(account_number)) # get position of the account number
user_deposit = deposit_list[
index_of_account_number] # locate user's deposit using the position of acc no.
user_firstname = firstname_list[
index_of_account_number] # locate first name of user
user_lastname = lastname_list[
index_of_account_number] # lcoate last name of user
lines()
print('Account details:', account_number, user_deposit,
user_firstname, user_lastname) # user's info
lines()
amount_to_deposit = validation_code.read_nonnegative_float(
'How much would you like to deposit into your '
'account ' + user_firstname + '? ') # get balanc
user_deposit = float(
user_deposit
) + amount_to_deposit # adding the user's deposit to his balance
deposit_list[
index_of_account_number] = user_deposit # updating the list containing the user's deposit
lines()
print('Updated account details: ', account_number, user_deposit,
user_firstname, user_lastname)
lines()
write_to_file(account_num_list, deposit_list, firstname_list,
lastname_list)
something_is_wrong = False # exit loop
else: # if bank account number is wrong, then do the following
lines()
print('This account number does not exist'
) # notify the user of what's wrong
lines()
more = validation_code.read_nonempty_string(
'Would you like another attempt to enter a different account '
'number (Y/N)? ')
# asking user if they would like to try again
if more.upper() == 'Y' or more.startswith('y') or more.startswith(
'Y'): # checking if yes
something_is_wrong = True # then loop through again and ask for a new account number
else:
something_is_wrong = False # if not then just exit without doing anything
def quit_program(
): # 12. This func asks user if they need to do anything else before quitting program
something_is_wrong = True
while something_is_wrong:
more = validation_code.read_nonempty_string(
'Do you need to do something else? (Y/N): ') # checking with user
# to exit or not
if more.upper() == 'Y' or more.startswith('y') or more.startswith('Y'):
main()
something_is_wrong = False
else:
print('Exiting program...')
something_is_wrong = False