### Run Example Spend P2SH Transaction Script (Shell)

Source: https://github.com/petertodd/python-bitcoinlib/blob/master/README.md

This command executes an example Python script from the 'examples/' directory that demonstrates how to create a transaction spending a pay-to-script-hash (P2SH) output. It sets the PYTHONPATH environment variable to include the current directory, allowing the script to import the bitcoinlib library.

```shell
$ PYTHONPATH=. examples/spend-p2sh-txout.py
<hex-encoded transaction>
```

--------------------------------

### Install libssl-dev Requirement (Shell)

Source: https://github.com/petertodd/python-bitcoinlib/blob/master/README.md

This command installs the `libssl-dev` package using apt-get, which is a required dependency for the python-bitcoinlib library.

```shell
sudo apt-get install libssl-dev
```

--------------------------------

### Run Unit Tests with Tox (Shell)

Source: https://github.com/petertodd/python-bitcoinlib/blob/master/README.md

This command executes the unit tests using Tox, a generic virtualenv management and test command line tool. It runs the tests against multiple Python versions as configured in the project's Tox setup. HTML coverage reports are generated in the `htmlcov/` subdirectory.

```shell
./runtests.sh
```

--------------------------------

### Run Unit Tests with unittest (Shell)

Source: https://github.com/petertodd/python-bitcoinlib/blob/master/README.md

This command executes the unit tests located under the `bitcoin/tests` directory using Python's built-in `unittest` module. It discovers and runs all tests within that directory.

```shell
python3 -m unittest discover
```

--------------------------------

### Select Bitcoin Chain Parameters (Python)

Source: https://github.com/petertodd/python-bitcoinlib/blob/master/README.md

This Python code snippet shows how to select the desired Bitcoin chain (mainnet, testnet, signet, or regtest) using the `bitcoin.SelectParams()` function. The selected chain is stored as a global variable, affecting the behavior of other parts of the library.

```python
import bitcoin
bitcoin.SelectParams(NAME)
```

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