S1

import pickle
import os
import pathlib

class Account:
    accNo = 0
    name = ''
    deposit = 0
    type = ''

    def createAccount(self):
        self.accNo = int(input("Enter your AccountN umber : "))
        self.name = input("Enter your Account Name : ")
        self.type = input("Enter your Account type [C/S] : ")
        self.deposit = int(input("Enter The Initial Amount : "))
        print("\n\n\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*****************************")
    print("\t\t\t\tBANK ACCOUNT MANAGING SYSTEMS")
    print("\t\t\t\t*****************************")

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 found")
    if not found:
        print("No existing record with this Account 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 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("\tMAIN MENU")
    print("\t1. NEW ACCOUNT")
    print("\t2. DEPOSIT AMOUNT")
    print("\t3. WITHDRAW AMOUNT")
    print("\t4. BALANCE ENQUIRY")
    print("\t5. ALL ACCOUNT HOLDER LIST")
    print("\t6. CLOSE AN ACCOUNT")
    print("\t7. MODIFY AN ACCOUNT")
    print("\t8. EXIT")
    print("\tSelect Your Option (1-8): ")
    ch = input()

    if ch == '1':
        writeAccount()
    elif ch == '2':
        num = int(input("\tEnter The account No. : "))
        depositAndWithdraw(num, 1)
    elif ch == '3':
        num = int(input("\tEnter The account No. : "))
        depositAndWithdraw(num, 2)
    elif ch == '4':
        num = int(input("\tEnter The account No. : "))
        displaySp(num)
    elif ch == '5':
        displayAll();
    elif ch == '6':
        num = int(input("\tEnter The account No. : "))
        deleteAccount(num)
    elif ch == '7':
        num = int(input("\tEnter The account No. : "))
        modifyAccount(num)
    elif ch == '8':
        print("\tThanks for using Bank Management Systems")
        break
    else:
        print("Invalid choice")