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Я пытаюсь создать банковскую программу. Я хочу, чтобы пользователь выбрал что-то (мы скажем » D » для депозита), а затем, когда код завершится, и пользователю будет возвращена общая сумма их новой учетной записи, я хочу начать все сначала Useraction , и это будет происходить непрерывно, пока пользователь не завершит все свои транзакции.

 print('What would you like to do?')  UserAction = input("Type 'D' to make depositnType 'W' to make a withdrawalnType 'B' to check your balance: ")  while True:  if UserAction.upper() == 'D':  print('Your current balance is', Userbal, 'Dollars' ) ; sleep(1)  DepositAmount = input('How much would you like to deposit? (include cents too): ')  pro()  print('Your balance has been updated!')  UserCash = float(Userbal)   float(DepositAmount)  Userbal = '{:.2f}'.format(UserCash)  print('Your new balance is', Userbal, 'Dollars' )   UserAction      if UserAction.upper() == 'W':  print('Your current balance is', Userbal, 'Dollars' ) ; sleep(1)  WithdrawAmount = input('How much would you like to withdraw? (include cents too): ')  pro()  print('Your balance has been updated!')  UserCash = float(Userbal) - float(WithdrawAmount)  Userbal = '{:.2f}'.format(UserCash)  print('Your new balance is', Userbal, 'Dollars' )   UserAction     if UserAction.upper() == 'B':  print('Your current balance is', Userbal, 'Dollars' )  UserAction  

Без фактического осуществления депозита , вывода средств и проверки баланса …

 def PromptAction():  UserAction = 'P' #priming the variable  while UserAction != 'E':  UserAction = input('Enter your choice(D-deposit,W-withdraw,B-balance,E-exit:')  if UserAction.upper() == 'D':  print('All Actions for deposit.')  elif UserAction.upper() == 'W':  print('All Actions for withdrawal.')  elif UserAction.upper() == 'B':  print('All actions for checking balance.')  elif UserAction.upper() == 'E':  print('Exiting...')  else:  print('{0} is not a valid input.'.format(UserAction))   

Исполнение:

 gt;gt;gt; PromptAction() Enter your choice(D-deposit,W-withdraw,B-balance,E-exit:D All Actions for deposit. Enter your choice(D-deposit,W-withdraw,B-balance,E-exit:W All Actions for withdrawal. Enter your choice(D-deposit,W-withdraw,B-balance,E-exit:B All actions for checking balance. Enter your choice(D-deposit,W-withdraw,B-balance,E-exit:X X is not a valid input. Enter your choice(D-deposit,W-withdraw,B-balance,E-exit:E Exiting... gt;gt;gt;    

Для выполнения задачи вам нужен вложенный цикл while. После каждой транзакции вы можете запрашивать у пользователя, хотят ли они, например, внести еще один депозит.

 account = [100] print("WELCOME TO PYTHON BAMK") while True:  choice = int(input("[1] Balancen[2] Depositn[3] Withdrawln[4] ExitnEnter choice: "))  if choice == 1:  while True:  print(f'Your balance: {account}')  break  elif choice == 2:  while True: #use nested loop for each block   amount = int(input("Enter amount: "))  account.append(amount)  print(f"Deposit successful!nBalance: {sum(account)}")   another = input("Make another deposit? Y/N: ").capitalize().strip() #prompt user to choose   if another == 'Y':  another = True  else:  break  elif choice == 3:  pass  else:  print("Thank you for using Python Bank.")  break  

Добавьте входные данные в первую строку тела цикла

 print('What would you like to do?') while True:  UserAction = input("Type 'D' to make depositnType 'W' to make a withdrawalnType 'B' to check your balance: ")   if UserAction.upper() == 'D':  print('Your current balance is', Userbal, 'Dollars' ) ; sleep(1)  DepositAmount = input('How much would you like to deposit? (include cents too): ')  pro()  print('Your balance has been updated!')  UserCash = float(Userbal)   float(DepositAmount)  Userbal = '{:.2f}'.format(UserCash)  print('Your new balance is', Userbal, 'Dollars' )   UserAction      if UserAction.upper() == 'W':  print('Your current balance is', Userbal, 'Dollars' ) ; sleep(1)  WithdrawAmount = input('How much would you like to withdraw? (include cents too): ')  pro()  print('Your balance has been updated!')  UserCash = float(Userbal) - float(WithdrawAmount)  Userbal = '{:.2f}'.format(UserCash)  print('Your new balance is', Userbal, 'Dollars' )   UserAction     if UserAction.upper() == 'B':  print('Your current balance is', Userbal, 'Dollars' )  UserAction