用Python实现简单的区块链系统1

Creates a new transaction to go into the next mined Block

:param sender: <str> Address of the Sender

:param recipient: <str> Address of the Recipient

:param amount: <int> Amount

:return: <int> The index of the Block that will hold this transactio

n

"""

self.current_transactions.append({

'sender': sender,

'recipient': recipient,