Metadata-Version: 2.4
Name: opshin
Version: 0.27.0
Summary: A simple pythonic programming language for Smart Contracts on Cardano
Project-URL: Repository, https://github.com/opshin/opshin
Project-URL: Documentation, https://opshin.opshin.dev/
Author-email: nielstron <niels@opshin.dev>
License-Expression: MIT
License-File: LICENSE.txt
Keywords: cardano,compiler,language,programming-language,python,smart-contracts,validator
Classifier: Development Status :: 3 - Alpha
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Programming Language :: Python :: 3.13
Classifier: Topic :: Software Development :: Compilers
Requires-Python: <4.0,>=3.9.0
Requires-Dist: frozenlist2>=1.0.0
Requires-Dist: ordered-set>=4.1.0
Requires-Dist: pluthon>=1.3.5
Requires-Dist: pycardano>=0.13.0
Requires-Dist: uplc>=1.3.1
Description-Content-Type: text/markdown


<div align="center">

<img  src="https://raw.githubusercontent.com/OpShin/opshin/main/opshin.png" width="240" />
<h1 style="text-align: center;">opshin</h1></br>


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<a href="https://github.com/OpShin/awesome-opshin"><img src="https://img.shields.io/badge/awesome-opshin-blue?logo=data:image/png;base64,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"></a>
</div>

> You are building what you want. Why not also build **how** you want?

This is an implementation of smart contracts for Cardano which are written in a strict subset of valid Python.
The general philosophy of this project is to write a compiler that 
ensure the following:

If the program compiles then:

1. it is a valid Python program
2. the output running it with python is the same as running it on-chain.

## Why opshin?
- 100% valid Python. Leverage the existing tool stack for Python, syntax highlighting, linting, debugging, unit-testing, [property-based testing](https://hypothesis.readthedocs.io/), [verification](https://github.com/marcoeilers/nagini)
- Intuitive. Just like Python.
- Flexible. Imperative, functional, the way you want it.
- Efficient & Secure. Static type inference ensures strict typing and optimized code


## Getting Started

Check out the [OpShin Book](https://book.opshin.dev) for an introduction to this tool and details into writing smart contracts.
This document will just outline the basic usage of the tool.

### Installation

Install Python 3.8, 3.9, 3.10 or 3.11. Then run

```bash
python3 -m pip install opshin
```

### Writing a Smart Contract

Check out the [OpShin Book](https://book.opshin.dev) for an introduction to this tool and details into writing smart contracts.

### Compiling

Write your program in python. You may start with the content of `examples`.
Arguments to scripts are passed in as Plutus Data objects in JSON notation.

You can run any of the following commands
```bash
# Evaluate script in Python - this can be used to make sure there are no obvious errors
# The parameter for smart contracts is the ScriptContext, which defines the entire transaction
opshin eval examples/smart_contracts/assert_sum.py 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

# Compile script to 'uplc', the Cardano Smart Contract assembly
opshin compile examples/smart_contracts/assert_sum.py
```

Furthermore, you can add a shebang to the first line of the python file to indicate that it represents an opshin smart contract.
You can choose from the following options:

- a general shebang: `#!opshin`, which represents `opshin eval`
- or a more specific purpose: `#!/usr/bin/env -S opshin eval`

By doing so, you can transform your python file to an executable: `chmod +x your_file.py` and execute it with `./your_file.py`, which will run `opshin eval any ./your_file.py` under the hood.


### Deploying

The deploy process generates all artifacts required for usage with common libraries like [pycardano](https://github.com/Python-Cardano/pycardano), [lucid](https://github.com/spacebudz/lucid) and the [cardano-cli](https://github.com/input-output-hk/cardano-node).

```bash
# Automatically generate all artifacts needed for using this contract
opshin build examples/smart_contracts/assert_sum.py
```

See the [tutorial by `pycardano`](https://pycardano.readthedocs.io/en/latest/guides/plutus.html) for explanations how to build transactions with `opshin` contracts.

## API for Smart Contracts

The python interface offers a simple API to compile, load, apply parameters and evaluate smart contracts.

```python3
from opshin.builder import *

# Build a validator script from a python file that contains a validator function
contract = build("path/to/contract.py")

# You can apply parameters to the contract during compilation
contract = build("path/to/contract.py", arg1, arg2, arg3)

# Store the compilation artifacts in a folder
contract.dump("path/to/store")

# You can also load a compiled contract from a path
contract = load("path/to/store")

# And apply parameters after loading a contract
contract = contract.apply_parameters(arg1, arg2, arg3)

# The artifacts contain the compiled script, the policy ID and the addresses and blueprint
contract_addr = contract.mainnet_addr
contract_blueprint = contract.blueprint
```

## Debugging artefacts

For debugging purposes, you can also run the `eval_uplc` and `compile_pluto` commands to see the intermediate representations of your smart contract.

```bash
# Compile script to 'uplc', and evaluate the script in UPLC (for debugging purposes)
opshin eval_uplc examples/smart_contracts/assert_sum.py 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

# Compile script to 'pluto', an intermediate language (for debugging purposes)
opshin compile_pluto examples/smart_contracts/assert_sum.py
```


## Contributing

### Developing and Technical Documentation

Generally, all contributions on the code side are very welcome.
To get an overview over the architecture and idea behind OpShin, check out [the Technical Documentation](./ARCHITECTURE.md).
A bug bounty has been set up and funded by Project Catalyst, which awards [Github issue](https://github.com/OpShin/opshin/labels/bug%20bounty) resolution with ADA rewards.
This is a great opportunity to get involved and earn some ADA.
Check out the [detailed introduction to the bounty program](./BUG_BOUNTY.md) for more information.

### Binary Size Tracking

OpShin includes tooling to track binary size changes across different optimization levels to help catch regressions:

```bash
# Check binary sizes against latest release
python scripts/check_binary_sizes.py
```

The binary size tracker automatically runs on pull requests and reports significant changes. See [Binary Size Tracker Documentation](docs/binary_size_tracker.md) for details.


### Sponsoring

You can sponsor the development of opshin through GitHub or [Patreon](https://patreon.com/OpShin) or just by sending ADA. Drop me a message on social media and let me know what it is for.

- **Patreon** Support OpShin at [Patreon](https://patreon.com/OpShin) to enjoy member benefits!
- **GitHub** Sponsor the developers of this project through the button "Sponsor" next to them
- **ADA** Donation in ADA can be submitted to `$opshin` or `addr1qyz3vgd5xxevjy2rvqevz9n7n7dney8n6hqggp23479fm6vwpj9clsvsf85cd4xc59zjztr5zwpummwckmzr2myjwjns74lhmr`.

### Supporters

<a href="https://github.com/inversion-dev"><img src="https://avatars.githubusercontent.com/u/127298233?s=200&v=4" width="50"></a>
<a href="https://github.com/MuesliSwapTeam/"><img  src="https://avatars.githubusercontent.com/u/91151317?v=4" width="50" /></a>
<a href="https://github.com/AadaFinance/"><img  src="https://avatars.githubusercontent.com/u/89693711?v=4" width="50" /></a>
<a href="https://github.com/kreate-community/"><img  src="https://avatars.githubusercontent.com/u/118675270?v=4" width="50" /></a>
