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# ParaView and trame
ParaView comes with its own Python, which may be missing some dependencies for the desired usage.
We can add more Python packages into ParaView by create a virtual environment and activate it inside your application by importing our helper module [venv.py](https://github.com/Kitware/trame/blob/master/examples/ParaView/venv.py).
## venv for ParaView
```bash
python3.9 -m venv .pvenv
source .pvenv/bin/activate
pip install trame>=2.0.0
deactivate
```
## Running an application with ParaView Python
```bash
/Application/ParaView-5.10.app/Content/bin/pvpython ./app.py --venv .pvenv
```
Or using PV_VENV environmnent variable
```bash
export PV_VENV=$PWD/.pvenv
/Application/ParaView-5.10.app/Content/bin/pvpython ./app.py
```
**Note**:
- venv handling was introduced in ParaView 5.10+ under `import paraview.web.venv`
- Otherwise you can use our local version of venv.py if not available for your app
- trame v2 requires ParaView 5.11+
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