for a small project I want to use the GaiaXPy linefinder https://gaia-dpci.github.io/GaiaXPy-website/tutorials/Linefinder tutorial.html GaiaXPy is working, but apparently I have to install the linefinder separately. I tried to follow the steps, but was not able to install the python package. Could someone help? I'm not an expert for that. On the website it says: To access it, you need to obtain the code from the line-finder branch and install the package from source. How do I get to the "line-finder branch" and install the package from the source? I used (from: https://gaiaxpy.readthedocs.io/en/latest/installation.html#from-source): Clone the repository git clone https://github.com/gaia-dpci/GaiaXPy Or, optionally, you can clone just a specific branch in the repo git clone --branch my-branch https://github.com/gaia-dpci/GaiaXPy Navigate to the GaiaXPy directory cd GaiaXPy Create a virtual environment python3 -m venv .env Activate the environment source .env/bin/activate Install the package python setup.py install Or alternative installation command pip install -e . But then the example code was still not working. Best regards! I tried uninstalling/installing the whole GaiaXPy. Also the installation with only But I couldn't execute for example: from gaiaxpy import find_fast I get the errormessage: ImportError: cannot import name 'find_extrema' from 'gaiaxpy' Continue reading...