将创建者名称添加到块

Question

我正在练习区块链，需要记录创建区块的时间时间戳和区块创建者的名称。

源代码链接。 https://github.com/howCodeORG/Simple-Python-Blockchain

我修改了几行

import getpass # Added by me
class Block:
blockNo = 0
data = None
next = None
hash = None
nonce = 0
previous_hash = 0x0
timestamp = datetime.datetime.now()
creator = getpass.getuser() # Added by me

def __init__(self, data):
self.data = data
def hash(self):
h = hashlib.sha256()
h.update(
str(self.nonce).encode('utf-8') +
str(self.data).encode('utf-8') +
str(self.previous_hash).encode('utf-8') +
str(self.timestamp).encode('utf-8') +
str(self.creator).encode('utf-8') + # Added by me
str(self.blockNo).encode('utf-8')
)
return h.hexdigest()
def __str__(self):
return "Block Hash: " + str(self.hash()) + "nBlockNo: " + str(self.blockNo) + "nBlock Data: " + str(self.data) + "nBlock Creator: " + str(self.creator) + "nHashes: " + str(self.nonce) + "n--------------"

输出：

Block Hash: 50339796dd060db74766426b02c57f58b591ddad6331a75e72b61081bf97ade0
BlockNo: 1
Block Data: Block 1
Block Creator: anku
Hashes: 1036355
--------------
Block Hash: 5c1d8eac7b95f4c2410681c0d2cb61eb754ff222d926778c4e1da332133107f1
BlockNo: 2
Block Data: Block 2
Block Creator: anku
Hashes: 3015159
--------------
Block Hash: ad14237eadc3be6ea1a1318fd25dc33e40216c0d37ea0bde14b8d05adf2501b9
BlockNo: 0
Block Data: Genesis
Block Creator: anku
Hashes: 0
--------------
Block Hash: 50339796dd060db74766426b02c57f58b591ddad6331a75e72b61081bf97ade0
BlockNo: 1
Block Data: Block 1
Block Creator: anku
Hashes: 1036355
--------------
Block Hash: 5c1d8eac7b95f4c2410681c0d2cb61eb754ff222d926778c4e1da332133107f1
BlockNo: 2
Block Data: Block 2
Block Creator: anku
Hashes: 3015159
--------------

问题：创世区块必须是第一个要执行的区块，但它在两者之间执行。有人可以指导我做错的地方吗？

Answer 1

如果你看一下mine函数，它会打印它开采的区块。这就是创世区块之前的区块的来源。尝试删除mine函数中的print。