def __init__(self, from_address, to_address, amount):
    self.from_address = from_address
    self.to_address = to_address
    self.amount = amount
    self.id = str(uuid4()).replace('-', '')
    self.signature = None
def __init__(self, from_address, to_address, amount):
    self.from_address = from_address
    self.to_address = to_address
    self.amount = amount
    self.id = str(uuid4()).replace('-', )
    self.signature = None