Metadata-Version: 2.1
Name: 0x-web3
Version: 4.8.2
Summary: Web3.py
Home-page: https://github.com/ethereum/web3.py
Author: Piper Merriam
Author-email: pipermerriam@gmail.com
License: MIT
Description: # Web3.py
        
        [![Join the chat at https://gitter.im/ethereum/web3.py](https://badges.gitter.im/ethereum/web3.py.svg)](https://gitter.im/ethereum/web3.py?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
        
        [![Build Status](https://circleci.com/gh/ethereum/web3.py.svg?style=shield)](https://circleci.com/gh/ethereum/web3.py.svg?style=shield)
        
        
        A Python implementation of [web3.js](https://github.com/ethereum/web3.js)
        
        * Python 3.5+ support
        
        Read more in the [documentation on ReadTheDocs](http://web3py.readthedocs.io/). [View the change log on Github](docs/releases.rst).
        
        ## Quickstart
        
        ```python
        import json
        import web3
        
        from web3 import Web3, HTTPProvider, TestRPCProvider
        from solc import compile_source
        from web3.contract import ConciseContract
        
        # Solidity source code
        contract_source_code = '''
        pragma solidity ^0.4.0;
        
        contract Greeter {
            string public greeting;
        
            function Greeter() {
                greeting = 'Hello';
            }
        
            function setGreeting(string _greeting) public {
                greeting = _greeting;
            }
        
            function greet() constant returns (string) {
                return greeting;
            }
        }
        '''
        
        compiled_sol = compile_source(contract_source_code) # Compiled source code
        contract_interface = compiled_sol['<stdin>:Greeter']
        
        # web3.py instance
        w3 = Web3(TestRPCProvider())
        
        # Instantiate and deploy contract
        contract = w3.eth.contract(abi=contract_interface['abi'], bytecode=contract_interface['bin'])
        
        # Get transaction hash from deployed contract
        tx_hash = contract.deploy(transaction={'from': w3.eth.accounts[0], 'gas': 410000})
        
        # Get tx receipt to get contract address
        tx_receipt = w3.eth.getTransactionReceipt(tx_hash)
        contract_address = tx_receipt['contractAddress']
        
        # Contract instance in concise mode
        abi = contract_interface['abi']
        contract_instance = w3.eth.contract(address=contract_address, abi=abi,ContractFactoryClass=ConciseContract)
        
        # Getters + Setters for web3.eth.contract object
        print('Contract value: {}'.format(contract_instance.greet()))
        contract_instance.setGreeting('Nihao', transact={'from': w3.eth.accounts[0]})
        print('Setting value to: Nihao')
        print('Contract value: {}'.format(contract_instance.greet()))
        ```
        
        ## Developer Setup
        
        ```sh
        git clone git@github.com:ethereum/web3.py.git
        cd web3.py
        ```
        
        Please see OS-specific instructions for:
        
        - [Linux](docs/README-linux.md#Developer-Setup)
        - [Mac](docs/README-osx.md#Developer-Setup)
        - [Windows](docs/README-windows.md#Developer-Setup)
        - [FreeBSD](docs/README-freebsd.md#Developer-Setup)
        
        Then run these install commands:
        
        ```sh
        virtualenv venv
        . venv/bin/activate
        pip install -e .[dev]
        ```
        
        For different environments, you can set up multiple `virtualenv`. For example, if you want to create a `venvdocs`, then you do the following:
        
        ```sh
        virtualenv venvdocs
        . venvdocs/bin/activate
        pip install -e .[docs]
        pip install -e .
        ```
        
        ## Using Docker
        
        If you would like to develop and test inside a Docker environment, use the *sandbox* container provided in the **docker-compose.yml** file.
        
        To start up the test environment, run:
        
        ```
        docker-compose up -d
        ```
        
        This will build a Docker container set up with an environment to run the Python test code.  
        
        **Note: This container does not have `go-ethereum` installed, so you cannot run the go-ethereum test suite.**
        
        To run the Python tests from your local machine:
        
        ```
        docker-compose exec sandbox bash -c 'pytest -n 4 -f -k "not goethereum"'
        ```
        
        You can run arbitrary commands inside the Docker container by using the `bash -c` prefix.
        
        ```
        docker-compose exec sandbox bash -c ''
        ```
        
        Or, if you would like to just open a session to the container, run:
        
        ```
        docker-compose exec sandbox bash
        ```
        
        ### Testing Setup
        
        During development, you might like to have tests run on every file save.
        
        Show flake8 errors on file change:
        
        ```sh
        # Test flake8
        when-changed -v -s -r -1 web3/ tests/ ens/ -c "clear; flake8 web3 tests ens && echo 'flake8 success' || echo 'error'"
        ```
        
        You can use `pytest-watch`, running one for every Python environment:
        
        ```sh
        pip install pytest-watch
        
        cd venv
        ptw --onfail "notify-send -t 5000 'Test failure ⚠⚠⚠⚠⚠' 'python 3 test on web3.py failed'" ../tests ../web3
        ```
        
        Or, you can run multi-process tests in one command, but without color:
        
        ```sh
        # in the project root:
        pytest --numprocesses=4 --looponfail --maxfail=1
        # the same thing, succinctly:
        pytest -n 4 -f --maxfail=1
        ```
        
        #### How to Execute the Tests?
        
        1. [Setup your development environment](https://github.com/ethereum/web3.py/#developer-setup).
        
        2. Execute `tox` for the tests
        
        There are multiple [components](https://github.com/ethereum/web3.py/blob/master/.travis.yml#L53) of the tests. You can run test to against specific component. For example:
        
        ```sh
        # Run Tests for the Core component (for Python 3.5):
        tox -e py35-core
        
        # Run Tests for the Core component (for Python 3.6):
        tox -e py36-core
        ```
        
        If for some reason it is not working, add `--recreate` params.
        
        `tox` is good for testing against the full set of build targets. But if you want to run the tests individually, `py.test` is better for development workflow. For example, to run only the tests in one file:
        
        ```sh
        py.test tests/core/gas-strategies/test_time_based_gas_price_strategy.py
        ```
        
        ### Release setup
        
        For Debian-like systems:
        ```
        apt install pandoc
        ```
        
        To release a new version:
        
        ```sh
        make release bump=$$VERSION_PART_TO_BUMP$$
        ```
        
        #### How to bumpversion
        
        The version format for this repo is `{major}.{minor}.{patch}` for stable, and
        `{major}.{minor}.{patch}-{stage}.{devnum}` for unstable (`stage` can be alpha or beta).
        
        To issue the next version in line, specify which part to bump,
        like `make release bump=minor` or `make release bump=devnum`.
        
        If you are in a beta version, `make release bump=stage` will switch to a stable.
        
        To issue an unstable version when the current version is stable, specify the
        new version explicitly, like `make release bump="--new-version 4.0.0-alpha.1 devnum"`
        
Keywords: ethereum
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Natural Language :: English
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Requires-Python: >=3.5.3,<4
Provides-Extra: tester
Provides-Extra: testrpc
Provides-Extra: docs
Provides-Extra: dev
Provides-Extra: linter
