[Python] Raspberry Pi 4 pip install opencv-python

I try to install opencv on my raspberry pi 4

pip install opencv-python


I get the following error

Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple Collecting opencv-python ERROR: Could not find a version that satisfies the requirement opencv-python (from versions: none) ERROR: No matching distribution found for opencv-python
​

I use 2019-07-10-raspbian-buster-full

$ python -V

Python 3.7.3
​

$ pip --version

pip 19.2.1 from /home/pi/envs/django_env/lib/python3.7/site-packages/pip (python 3.7)
​

I saw some recommended ways, but none of them work:

https://raspberrypi.stackexchange.c...n-of-opencv-contrib-python-through-pip3-fails

sudo pip3 install opencv-contrib-python==3.4.4.19


https://www.pyimagesearch.com/2018/09/19/pip-install-opencv/

$ sudo apt-get install libhdf5-dev libhdf5-serial-dev libhdf5-100
$ sudo apt-get install libqtgui4 libqtwebkit4 libqt4-test python3-pyqt5
$ sudo apt-get install libatlas-base-dev
$ sudo apt-get install libjasper-dev

pip install opencv-contrib-python


I remember that it always worked on my other raspberry pis (2b and 3). Is there an option to install opencv on the raspberry pi 4?

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