Hands-On Blockchain for Python Developers
Arjuna Sky Kok更新时间：2021-07-02 13:13:35
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Title Page
Copyright and Credits
Hands-On Blockchain for Python Developers
About Packt
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Foreword
Contributors
About the author
About the reviewer
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Preface
Who this book is for
What this book covers
To get the most out of this book
Download the example code files
Download the color images
Conventions used
Get in touch
Reviews
Section 1: Blockchain and Smart Contracts
Introduction to Blockchain Programming
The rise of cryptocurrency and blockchain
Blockchain technology
Signing data in blockchain
From linked list to blockchain
Cryptography
Symmetric and asymmetric cryptography
The hashing function
Proof of work
Consensus
Coding on the blockchain
Other types of blockchain programmers
Summary
References
Smart Contract Fundamentals
Installing an Ethereum development environment
Installing Node.js
Installing Truffle and Solidity
Installing Ganache
Writing a smart contract
Deploying a smart contract to Ethereum blockchain
Interacting with smart contracts
Sending ether to smart contracts
Why smart contracts?
Summary
Further reading
Implementing Smart Contracts Using Vyper
Motivations behind Vyper
Installing Vyper
Creating a smart contract with Vyper
Deploying a smart contract to Ganache
Interacting with smart contracts
Going deeper into Vyper
Data types
Withdrawing ethers
Other data types
Useful built-in functions
Events
Interacting with other smart contracts
Compiling code programmatically
Other tricks
Summary
Section 2: Web3 and Populus
Interacting with Smart Contracts Using Web3
Introduction to decentralized applications
Installing web3
Geth
Geth console
Understanding the web3.py library
Gas and gas price
Nonce
Creating a transaction on Rinkeby
Interacting with smart contracts using web3.py
Launching a smart contract with Geth
Launching a smart contract with web3
Playing with a smart contract
Summary
Populus Development Framework
Setting up Populus
Adding support for Vyper
Smart contract unit test
Using arguments in the constructor
Deploying a smart contract with Populus
Summary
Building a Practical Decentralized Application
Developing a simple voting application
Deploying a smart contract that has arguments in its constructor
Developing a commercial voting application
Developing a token-based voting application
Summary
Further reading
Section 3: Frontend Decentralized Applications
Frontend Decentralized Application
Setting up the Qt GUI library
Choosing a GUI library
Installing Qt for Python
Crash course on Qt for Python
Layout
Other widgets
Callback
Threading
Writing the smart contract for the Twitter–like application
Test
Fixtures
Building the GUI frontend for the Twitter–like application
Summary
Section 4: Cryptocurrency and Wallets
Creating Token in Ethereum
Token smart contract
Mist
ERC20
Selling a token
Stable coin
Summary
Further reading
Cryptocurrency Wallet
Advanced features of the PySide2 library
Testing application
Advanced features of Qt for Python or PySide2
Building a cryptocurrency wallet
Blockchain class
Thread classes
Identicon and Icons
Building widgets
Account widget
Sending a transaction widget
Token widget
Test
Considerations when building a cryptocurrency wallet
Security
User experience
Summary
Section 5: Decentralized Filesystem
InterPlanetary - A Brave New File System
The motivation behind IPFS
Merkle DAG
Merkle tree
Directive Acrylic Graphs (DAGs)
Content addressing
The Merkle DAG data structure
Peer-to-peer networking
The notion of closeness of data and nodes
XOR distance
Buckets
Summary
Using ipfsapi to Interact with IPFS
Installing the IPFS software and its library
Content hashing
Protobuf
Multihash
Base58
Combining protobuf multihash and base58
The ipfsapi API
IPNS
Pinning
Pubsub
Mutable File System
Other APIs
Summary
Further reading
Implementing a Decentralized Application Using IPFS
Architecture of the decentralized video-sharing application
Architecture of a video-sharing smart contract
Architecture of a video-sharing web application
Writing the video-sharing smart contract
Launching a private Ethereum blockchain
Creating a bootstrap script
Building the video-sharing web application
Views
Models
Templates
Urls
Demo
Note
Summary
Further reading
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更新时间：2021-07-02 13:13:35