9、区块链技术：原理、特性与共识机制解析

区块链技术：原理、特性与共识机制解析

1. Merkle树代码示例

本部分给出了一个最基础的Merkle树的Python代码示例，不同语言的实现思路类似，只是需要找到合适的库函数。以下是具体代码：

# -*- coding: utf-8 -*-
from hashlib import sha256

class MerkelTree(object):
    def __init__(self):
        pass

    def chunks(self, transaction, n):
        # This function yeilds "n" number of transaction at time
        for i in range(0, len(transaction), number):
            yield transaction[i:i+2]

    def merkel_tree(self, transactions):
        # Here we will find the merkel tree hash of all 
        # transactions passed to this fuction
        # Problem is solved using recursion techqiue
        # Given a list of transactions, we concatinate the 
        # hashes in groups of two and compute
        # the hash