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Python SDK for TON via tonlib

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# PyTONLib

[![PyPI](https://img.shields.io/pypi/v/pytonlib?color=blue)](https://pypi.org/project/pytonlib/)
[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/pytonlib)](https://pypi.org/project/pytonlib/)
![Github last commit](https://img.shields.io/github/last-commit/toncenter/pytonlib)

This is standalone Python library based on `libtonlibjson`, the functionality is similar to the [ton-http-api](https://github.com/toncenter/ton-http-api) 
with the following restrictions:

* a client can connect to only one LiteServer;
* a client is asyncronious;
* no requests cache.

## Installation

### From PyPi
Currently, the library works for Windows, Mac and Linux only on Intel CPUs:

* (Windows) Install OpenSSL v1.1.1 for Win64 from [here](https://slproweb.com/products/Win32OpenSSL.html).
* Install Python 3 package: `pip3 install pytonlib`.

### Docker

In this repo Compose file is provided to deploy the example of service with *pytonlib*:
```bash
docker-compose -f docker-compose.jupyter.yaml build
docker-compose -f docker-compose.jupyter.yaml up -d
```

Jupyter Notebook will be available on port 3100 (http://localhost:3100).

## Examples

We recommend to use IPython or Jupyter Notebook for prototyping because they allow to run `async` code. An example of running `async` code from script could be found in the end of this section.

* Connecting to the first LiteServer in mainnet config:
```python
import requests
import asyncio
from pathlib import Path

from pytonlib import TonlibClient

# downloading mainnet config
ton_config = requests.get('https://ton.org/global.config.json').json()

# create keystore directory for tonlib
keystore_dir = '/tmp/ton_keystore'
Path(keystore_dir).mkdir(parents=True, exist_ok=True)

# init TonlibClient
client = TonlibClient(ls_index=0, # choose LiteServer index to connect
                      config=ton_config,
                      keystore=keystore_dir)

# init tonlibjson
await client.init()
```

* Reading blocks info:
```python
masterchain_info = await client.get_masterchain_info()
block_header = await client.get_block_header(**masterchain_info['last'])
shards = await client.get_shards(master_seqno=masterchain_info['last']['seqno'])
```

* Reading Block Transactions for masterchain block:
```python
masterchain_info = await client.get_masterchain_info()
txs = await client.get_block_transactions(**masterchain_info['last'], count=10)
```

* Running async code from script:
```python
import requests
import asyncio
from pathlib import Path

from pytonlib import TonlibClient

async def main():
    loop = asyncio.get_running_loop()
    ton_config = requests.get('https://ton.org/global.config.json').json()

# create keystore directory for tonlib
    keystore_dir = '/tmp/ton_keystore'
    Path(keystore_dir).mkdir(parents=True, exist_ok=True)
    
    # init TonlibClient
    client = TonlibClient(ls_index=0, # choose LiteServer index to connect
                          config=ton_config,
                          keystore=keystore_dir,
                          loop=loop)
    
    # init tonlibjson
    await client.init()
    
    # reading masterchain info
    masterchain_info = await client.get_masterchain_info()

# closing session
    await client.close()

if __name__ == '__main__':
    asyncio.run(main())
```

## Running tests

To run tests in *asyncio* mode use the following command: 
```bash
PYTHONPATH=./ pytest --asyncio-mode=strict tests/
```

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