transaction.py

from collections import OrderedDict
from utility.printable import Printable

class Transaction(Printable):
    """A transaction which can be added to a block in the blockchain.

    Attributes:
        :sender: The sender of the coins.
        :recipient: The recipient of the coins.
        :signature: The signature of the transaction:
        :amount: The amount of coins sent.
    """


    def __init__(self, sender, recipient, signature, amount):
        self.sender = sender
        self.recipient = recipient
        self.amount = amount
        self.signature = signature


    # Creating an ordered dict out of a given transaction. Used when order matters.
    def to_ordered_dict(self):
        return OrderedDict([('sender', self.sender), 
                            ('recipient', self.recipient), 
                            ('amount', self.amount)])