# 2PPy (tuProlog in Python)
Experimental porting of [2P-Kt](https://github.com/tuProlog/2p-kt) on Python, via [JPype](https://jpype.readthedocs.io).
> This is a __work in progress__. 2PPy is not ready for general availability, yet.
## Introduction
Object-oriented and modular ecosystem for symbolic AI and logic programming, currently featuring:
* a module for logic terms and clauses representation, namely `tuprolog.core`,
* a module for logic unification, namely `tuprolog.unify`,
* a module for in-memory indexing and storing logic theories, as well as other sorts of collections of logic clauses, namely `tuprolog.theory`,
* a module providing generic API for resolution of logic queries, namely `tuprolog.solve`, currently implementing a Prolog solver
* two parsing modules: one aimed at parsing terms, namely `tuprolog.core.parsing`, and the other aimed at parsing theories, namely `tuprolog.theory.parsing`,
* two serialisation-related modules: one aimed at (de)serialising terms and clauses, namely `tuprolog.core.serialize`, and the
other aimed at (de)serialising terms theories, namely `tuprolog.theory.serialize`,
* a module for using Prolog via a command-line interface, namely `tuprolog.repl`.
## How to do stuff
### Prerequisites
1. Install Python 3 (look into the `.python-version` to know the exact version)
* I suggest using [Pyenv](https://github.com/pyenv/pyenv) to easily handle multiple Python versions on the same machine
* Ensure PIP works fine
2. Install Java (JDK preferred), and **ensure the `JAVA_HOME` variable is correctly set**
3. Ensure Java and Python are both either 64bit or 32bit
4. If you have installed some prior development version of 2PPy (e.g. `tuppy` or `tuprolog`), uninstall them via
```bash
pip uninstall tuppy tuprolog
```
On __Mac OS__ this may not work as expected.
Consider running the following command instead:
```bash
python3 -m pip uninstall tuppy tuprolog
```
### How to develop 2PPy
5. Restore Python dependencies via PIP, by running:
```bash
pip install -r requirements.txt
```
On __Mac OS__ this may not work as expected.
Consider running the following command instead:
```bash
python3 -m pip -r requirements.txt
```
6. Restore JVM dependencies via `download-jars.sh`, by running:
```bash
./download-jars.sh
```
Notice that this command requires `curl` and `wget` to be installed on your system (`wget` may be lacking on __Mac OS__ and Windows)
### How to use 2PPy as a library
5. Install 2PPy from Pypi by running:
```bash
pip install 2ppy
```
On __Mac OS__ this may not work as expected.
Consider running the following command instead:
```bash
python3 -m pip install 2ppy
```
6. Import `tuprolog.*` modules in your Python scripts
7. Profit
### How to use 2PPy as an executable
5. Install 2PPy from Pypi by running:
```bash
pip install 2ppy
```
On __Mac OS__ this may not work as expected.
Consider running the following command instead:
```bash
python3 -m pip install 2ppy
```
6. Run `tuprolog` module via
```bash
python -m tuprolog
```
For the moment, running 2PPy means starting an interactive Python shell with pre-loaded `tuprolog.*` modules.
Eventually `python -m tuprolog` will launch a command-line logic solver.
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