Programming in Python.. Stuck on this program

I have to write a program to process a file of many bank transactions. The data file we have to use with the program goes like this: The first line of the file indicates the number of bank accounts. If the first line is ‘x’ – then the next ‘x*2’ lines are pairs of data containing: • bank account number • current balance I have to create a bank account object and put them in a list. Following these lines are an unknown number of “sets” of data for transactions. Each transaction consists of: transaction type (W,D,T or B) account number(s) amount The sentinel value is a transaction type of “#”. This is what my code looks like so far:

class BankAccount:
     def __init__(self, inputNum, inputAmount):
         self.__acctNum = inputNum
         self.__balance = inputAmount
         self.__numDeposits = 0
         self.__totalDeposits = 0
         self.__numWithdrawals = 0
         self.__totalWithdrawals = 0

     def getAcctNum(self):
         return self.__acctNum

     def getBalance(self):
         return self.__balance

     def getNumDeposits(self):
         return self.__numDeposits

     def getNumWithdrawals(self):
         return self.__numWithdrawals

     def getTotalDeposits(self):
         return self.__totalDeposits

     def getTotalWithdrawals(self):
         return self.__totalWithdrawals

     def Deposit(self,amount):
         self.__balance = self.__balance + amount
         self.__numDeposits = self.__numDeposits + 1
         self.__totalDeposits = self.__totalDeposits + amount

    def Withdrawal(self,amount):
         if (self.__balance >= amount):
             self.__balance = self.__balance - amount
             self.__numWithdrawals = self.__numWithdrawals + 1
             self.__totalWithdrawals = self.__totalWithdrawals + amount
             return True
         else:
             return False

def main():

    list1 = []
    num = eval(input())

    for i in range(num):
        account = input()
        amount = eval(input())
        bankAccount = BankAccount(account,amount)
        list1.append(bankAccount)
        print(list1[i].getBalance())

    while(type != '#'):
        if(type == 'D'):
            account.deposit(amount)
            elif(type == 'W'):

        elif(type == 'T'):

        elif(type == 'B'):

First question: Do list1 and num = eval(input()) go before the main function, or is it good like it is? Second question: Where would type = eval(input()) go? I'm guessing it would go right after the list1 and num? Also, if you could give me some suggestions or tips on how to finish this program, I'd really appreciate it!