创世区块python
时间: 2023-11-30 21:43:13 浏览: 35
根据提供的引用内容,第二个引用是比特币的创世区块中的信息,而与Python无关。而第一个引用则是安装Python和pip的命令。因此,我猜测您想要了解的是Python中的创世区块。
Python中的创世区块是指在区块链中的第一个区块,它是由区块链的创建者手动创建的。在Python中,我们可以使用以下代码来创建一个简单的创世区块:
```python
import hashlib
import json
from time import time
class Blockchain(object):
def __init__(self):
self.chain = []
self.current_transactions = []
# Create the genesis block
self.new_block(previous_hash='1', proof=100)
def new_block(self, proof, previous_hash=None):
"""
Create a new Block in the Blockchain
:param proof: <int> The proof given by the Proof of Work algorithm
:param previous_hash: (Optional) <str> Hash of previous Block
:return: <dict> New Block
"""
block = {
'index': len(self.chain) + 1,
'timestamp': time(),
'transactions': self.current_transactions,
'proof': proof,
'previous_hash': previous_hash or self.hash(self.chain[-1]),
}
# Reset the current list of transactions
self.current_transactions = []
self.chain.append(block)
return block
def new_transaction(self, sender, recipient, amount):
"""
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 transaction
"""
self.current_transactions.append({
'sender': sender,
'recipient': recipient,
'amount': amount,
})
return self.last_block['index'] + 1
@staticmethod
def hash(block):
"""
Creates a SHA-256 hash of a Block
:param block: <dict> Block
:return: <str>
"""
# We must make sure that the Dictionary is Ordered, or we'll have inconsistent hashes
block_string = json.dumps(block, sort_keys=True).encode()
return hashlib.sha256(block_string).hexdigest()
@property
def last_block(self):
return self.chain[-1]
```
这是一个简单的区块链实现,其中包括创建创世区块的代码。在这个实现中,我们使用了Python的哈希库和JSON库来创建和管理区块链。您可以根据需要进行修改和扩展。