transactions.py

# -*- coding: utf-8 -*-

class TransactionsList(object):

    def __init__(self, filename):
        self.transactions = []
        with open(filename) as file:
            for line in file:
                
                transaction = tuple(int(x) for x in sorted(line.split()))
                self.transactions.append(transaction)

    def __iter__(self):
        return iter(self.transactions)

    def __len__(self):
        return len(self.transactions)

    def get(self, index):
        return self.transactions[index]