text: import pickle
  import os
  import pathlib
  
  
  class Account:
      accNo = 0
      name = ''
      deposit = 0
      type = ''
  
      def createAccount(self):
          self.accNo = int(input("Enter The Account Number: "))
          self.name = input("Enter The Account Holder Name: ")
          self.type = input("Enter The Type Of Account [C/S]: ")
          self.deposit = int(input("Enter The Initial Amount(>=500 For Savings And >=1000 For Current): "))
          print("\nAccount Created")
  
      def showAccount(self):
          print("Account Number: ", self.accNo)
          print("Account Holder Name: ", self.name)
          print("Type Of Account: ", self.type)
          print("Balance: ", self.deposit)
  
      def modifyAccount(self):
          print("Account Number: ", self.accNo)
          self.name = input("Modify Account Holder Name: ")
          self.type = input("Modify Type Of Account: ")
          self.deposit = int(input("Modify Balance: "))
  
      def depositAmount(self, amount):
          self.deposit += amount
  
      def withdrawAmount(self, amount):
          self.deposit -= amount
  
      def report(self):
          print(self.accNo, " ", self.name, " ", self.type, " ", self.deposit)
  
      def getAccountNo(self):
          return self.accNo
  
      def getAcccountHolderName(self):
          return self.name
  
      def getAccountType(self):
          return self.type
  
      def getDeposit(self):
          return self.deposit
  
  
  def intro():
      print("\t\t\t\t\t******************************************")
      print("\t\t\t\t\t**********BANK MANAGEMENT SYSTEM**********")
      print("\t\t\t\t\t******************************************")
      input()
  
  
  def writeAccount():
      account = Account()
      account.createAccount()
      writeAccountsFile(account)
  
  
  def displayAll():
      file = pathlib.Path("accounts.data")
      if file.exists():
          infile = open('accounts.data', 'rb')
          mylist = pickle.load(infile)
          for item in mylist:
              print(item.accNo, " ", item.name, " ", item.type, " ", item.deposit)
          infile.close()
      else:
          print("No Records To Display")
  
  
  def displaySp(num):
      file = pathlib.Path("accounts.data")
      if file.exists():
          infile = open('accounts.data', 'rb')
          mylist = pickle.load(infile)
          infile.close()
          found = False
          for item in mylist:
              if item.accNo == num:
                  print("Your Account Balance Is: ", item.deposit)
                  found = True
      else:
          print("No Records To Search")
      if not found:
          print("No Existing Record With This Number")
  
  
  def depositAndWithdraw(num1, num2):
      file = pathlib.Path("accounts.data")
      if file.exists():
          infile = open('accounts.data', 'rb')
          mylist = pickle.load(infile)
          infile.close()
          os.remove('accounts.data')
          for item in mylist:
              if item.accNo == num1:
                  if num2 == 1:
                      amount = int(input("Enter The Amount To Deposit: "))
                      item.deposit += amount
                      print("Your Account Is Updated")
                  elif num2 == 2:
                      amount = int(input("Enter The Amount To Withdraw: "))
                      if amount <= item.deposit:
                          item.deposit -= amount
                      else:
                          print("You Cannot Withdraw Larger Amount")
  
      else:
          print("No Records To Search")
      outfile = open('newaccounts.data', 'wb')
      pickle.dump(mylist, outfile)
      outfile.close()
      os.rename('newaccounts.data', 'accounts.data')
  
  
  def deleteAccount(num):
      file = pathlib.Path("accounts.data")
      if file.exists():
          infile = open('accounts.data', 'rb')
          oldlist = pickle.load(infile)
          infile.close()
          newlist = []
          for item in oldlist:
              if item.accNo != num:
                  newlist.append(item)
          os.remove('accounts.data')
          outfile = open('newaccounts.data', 'wb')
          pickle.dump(newlist, outfile)
          outfile.close()
          os.rename('newaccounts.data', 'accounts.data')
  
  
  def modifyAccount(num):
      file = pathlib.Path("accounts.data")
      if file.exists():
          infile = open('accounts.data', 'rb')
          oldlist = pickle.load(infile)
          infile.close()
          os.remove('accounts.data')
          for item in oldlist:
              if item.accNo == num:
                  item.name = input("Enter The Account Holder Name: ")
                  item.type = input("Enter The Account Type: ")
                  item.deposit = int(input("Enter The Amount: "))
  
          outfile = open('newaccounts.data', 'wb')
          pickle.dump(oldlist, outfile)
          outfile.close()
          os.rename('newaccounts.data', 'accounts.data')
  
  
  def writeAccountsFile(account):
      file = pathlib.Path("accounts.data")
      if file.exists():
          infile = open('accounts.data', 'rb')
          oldlist = pickle.load(infile)
          oldlist.append(account)
          infile.close()
          os.remove('accounts.data')
      else:
          oldlist = [account]
      outfile = open('newaccounts.data', 'wb')
      pickle.dump(oldlist, outfile)
      outfile.close()
      os.rename('newaccounts.data', 'accounts.data')
  
  
  ch = ''
  num = 0
  intro()
  
  while ch != 8:
      print("\nMain Menu")
      print("1. New Account")
      print("2. Deposit Amount")
      print("3. Withdraw Amount")
      print("4. Balance Enquiry")
      print("5. All Account Holders List")
      print("6. Close An Account")
      print("7. Modify An Account")
      print("8. Exit")
      print("Select Your Option (1-8): ")
      ch = input("Enter Your Choice: ")
  
      if ch == '1':
          writeAccount()
      elif ch == '2':
          num = int(input("Enter The Account Number: "))
          depositAndWithdraw(num, 1)
      elif ch == '3':
          num = int(input("Enter The Account Number: "))
          depositAndWithdraw(num, 2)
      elif ch == '4':
          num = int(input("Enter The Account Number: "))
          displaySp(num)
      elif ch == '5':
          displayAll()
      elif ch == '6':
          num = int(input("Enter The Account Number: "))
          deleteAccount(num)
      elif ch == '7':
          num = int(input("Enter The Account Number: "))
          modifyAccount(num)
      elif ch == '8':
          print("Thanks For Using Bank Management System")
          break
      else:
          print("Invalid Choice")
  