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https://github.com/tinywan/py-blockchain
py-blockchain
https://github.com/tinywan/py-blockchain
blockchain blockchain-wallet p2p
Last synced: about 2 months ago
JSON representation
py-blockchain
- Host: GitHub
- URL: https://github.com/tinywan/py-blockchain
- Owner: Tinywan
- Created: 2018-12-01T02:42:41.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2024-04-03T15:19:49.000Z (9 months ago)
- Last Synced: 2024-10-31T20:13:01.638Z (about 2 months ago)
- Topics: blockchain, blockchain-wallet, p2p
- Language: Python
- Size: 20.5 KB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
### 区块
```
{
"index":0, // 块索引
"timestamp:"", // 时间戳
"transactions":{ // 交易信息，一个数组
"sender":"",
"recipient":"",
"amount":"100.00"
},
"proof":"", // 工作量证明
"previous_hash":"" // 上一个区块的哈希值
}
```
## 接口调用
#### 创建区块
* 请求地址：`http://127.0.0.1:5000/transactions/new`
* 请求方式：`POST`
* 请求参数：
```
{
"sender":"Tinywan",
"recipient":"Ai",
"amount":100
}
```
* 响应结果：
```
{
"message": "Transaction will be added to Block 2"
}
```
#### 获取所有的区块
* 请求地址：`http://127.0.0.1:5000/chain`
* 请求方式：`GET`
* 响应结果：
```
{
"chain": [
{
"index": 1,
"previous_hash": 1,
"proof": 100,
"timestamp": 1543666409.1956131,
"transactions": []
},
{
"index": 2,
"previous_hash": "2247f6a2db347ae65c7568e09e6bdef246b2b18dbcdc94630832db78f5c99262",
"proof": 35293,
"timestamp": 1543666418.8082924,
"transactions": [
{
"amount": 1,
"recipient": "7645ac7a096b4b3aafb9c211334d0f5d",
"sender": "0"
}
]
},
{
"index": 3,
"previous_hash": "266575731b70e8c4e3ee3808e72f9deb9c9f00ea6faeb9b33be018efa3f11e2a",
"proof": 35089,
"timestamp": 1543666421.0963986,
"transactions": [
{
"amount": 1,
"recipient": "7645ac7a096b4b3aafb9c211334d0f5d",
"sender": "0"
}
]
}
],
"length": 7
}
```
#### 挖矿
* 请求地址：`http://127.0.0.1:5000/mine`
* 请求方式：`GET`
* 响应参数：
```
{
"index": 11,
"message": "New Block Forged",
"previous_hash": "59d1a9905710bee3e30b2ec5472aa73a671a5bf90dba7b17f19c94354a2f7009",
"proof": [
{
"amount": 1,
"recipient": "7645ac7a096b4b3aafb9c211334d0f5d",
"sender": "0"
}
],
"transactions": [
{
"amount": 1,
"recipient": "7645ac7a096b4b3aafb9c211334d0f5d",
"sender": "0"
}
]
}
```
#### 注册节点
* 请求地址：`http://127.0.0.1:5000/node/register`
* 请求方式：`POST`
* 请求参数：
```
{
"nodes":["https://127.0.0.1:5004"]
}
```
* 响应结果：
```
{
"message": "New nodes had added",
"total_nodes": [
"127.0.0.1:5001",
"127.0.0.1:5004",
"127.0.0.1:5002"
]
}
```
## 需求环境
#### 新建目录
```
mkdir lesson01
cd lesson01
```
#### 安装 pipenv
```
pip install pipenv
```
#### 安装 flask
```
pipenv install flask==0.12.2
```
> Windows 环境 `pip install flask`
#### 安装 request
```
pipenv install request==2.18.4
```
> Windows 环境 `pip install request`
## 知识点
* import与from import使用及区别
* import语句 ：
* 描述：在开始使用一个模块中的函数之前，必须用import语句导入该模块。
* 语法：`import module1[, module2[,... moduleN]]`
* 案例：使用random模块ranint() 函数
```
import random
for i in range(5):
print(random.randint(1, 10))
```
* from import语句 ：
* 描述：这是导入模块的另一种形式，使用这种形式的 import 语句， 调用 模块中的函数时不需要 moduleName. 前缀
* 语法：`from moduleName import name1[, name2[, ... nameN]]|*`
* 案例：使用random模块ranint() 函数
```
from random import *
for i in range(5):
print(randint(1, 10)) # 这里就不需要random.前缀了
```
## 错误
错误1、`TypeError: 'dict' object is not callable`
```
self.last_block("index") + 1 修改为 self.last_block['index'] + 1
```
## 参考文档
* [Python新利器之pipenv](https://www.jianshu.com/p/00af447f0005)
* [Flask 是一个 Python 实现的 Web 开发微框架](http://docs.jinkan.org/docs/flask/)