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# Python bindings for the OPM-common module of the Open Porous Media project.
## To compile with python support:
- Add the cmake flags `-DOPM_ENABLE_PYTHON=ON` and `-DOPM_INSTALL_PYTHON=ON`
- Optionally add prefix `-DCMAKE_INSTALL_PREFIX=/opt/opm` to install outside
the standard distro directories
- Optionally specify python binary `-DPython3_EXECUTABLE=/home/user/miniconda3/envs/rkt/bin/python3`
if you don't want to use the system python, e.g. use a python from `pyenv` or from a `conda` environment
### Sample compilation on linux:
```bash
#! /bin/bash
flags="-DPython3_EXECUTABLE=/home/hakon/miniconda3/envs/rkt/bin/python3 -DOPM_ENABLE_PYTHON=ON -DOPM_INSTALL_PYTHON=ON -DCMAKE_INSTALL_PREFIX=/opt/opm"
for repo in opm-common opm-grid opm-models opm-simulators
do
cd "$repo"
mkdir -p build
cd build
cmake $flags ..
make -j8
sudo make install
cd ..
cd ..
done
```
Then you should be able to use the module from a Python script. If you installed in
a non-standard directory by specifying `-DCMAKE_INSTALL_PREFIX` you may need to set the
`PYTHONPATH` environment variable before running your Python script, for example:
```bash
$ PYTHONPATH=/opt/opm/lib/python3.11/site-packages python3 spe1case1.py
```
and `spe1case1.py` could be:
```python
import os
from opm.simulators import BlackOilSimulator
from opm.io.parser import Parser
from opm.io.ecl_state import EclipseState
from opm.io.schedule import Schedule
from opm.io.summary import SummaryConfig
os.chdir("SPE1CASE1")
deck = Parser().parse('SPE1CASE1.DATA')
state = EclipseState(deck)
schedule = Schedule( deck, state )
summary_config = SummaryConfig(deck, state, schedule)
sim = BlackOilSimulator(deck, state, schedule, summary_config)
sim.step_init()
sim.step()
poro = sim.get_porosity()
poro = poro *.95
sim.set_porosity(poro)
sim.step()
sim.step_cleanup()
```
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