Could not find a version that satisfies the requirement opencv_python==4.2.0.42

[wzr1337]

The required opencv version does not exist

Collecting numpy==1.16.1
  Using cached numpy-1.16.1.zip (5.1 MB)
  Preparing metadata (setup.py) ... done
ERROR: Could not find a version that satisfies the requirement opencv_python==4.2.0.42 (from versions: 3.4.0.14, 3.4.10.37, 3.4.11.39, 3.4.11.41, 3.4.11.43, 3.4.11.45, 3.4.13.47, 3.4.14.51, 3.4.14.53, 3.4.15.55, 3.4.16.57, 3.4.16.59, 4.3.0.38, 4.4.0.40, 4.4.0.42, 4.4.0.44, 4.4.0.46, 4.5.1.48, 4.5.2.52, 4.5.2.54, 4.5.3.56, 4.5.4.58, 4.5.4.60)
ERROR: No matching distribution found for opencv_python==4.2.0.42

[style96]

Python 3.10 has problem. Downgrade python version to 3.7.6. issue will fix.

[lillalysmasken3]

I have the same issue. Fail to install one or more dependancies with the same type error you get.
I've tried with Python 3.7.6, 3.7.9, 3.8.10, 3.10.11, 3.11.5, and 2.7.18.
is there some definitive answer on what version works with the packages in the requirements.txt?

[LoeizD]

using python 3.7.6 I now get

ERROR: Could not find a version that satisfies the requirement numpy==1.22.0 (from -r requirements.txt (line 1)) (from versions: 1.3.0, 1.4.1, 1.5.0, 1.5.1, 1.6.0, 1.6.1, 1.6.2, 1.7.0, 1.7.1, 1.7.2, 1.8.0, 1.8.1, 1.8.2, 1.9.0, 1.9.1, 1.9.2, 1.9.3, 1.10.0.post2, 1.10.1, 1.10.2, 1.10.4, 1.11.0, 1.11.1, 1.11.2, 1.11.3, 1.12.0, 1.12.1, 1.13.0, 1.13.1, 1.13.3, 1.14.0, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.14.5, 1.14.6, 1.15.0, 1.15.1, 1.15.2, 1.15.3, 1.15.4, 1.16.0, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.16.6, 1.17.0, 1.17.1, 1.17.2, 1.17.3, 1.17.4, 1.17.5, 1.18.0, 1.18.1, 1.18.2, 1.18.3, 1.18.4, 1.18.5, 1.19.0, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.19.5, 1.20.0, 1.20.1, 1.20.2, 1.20.3, 1.21.0, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6)
ERROR: No matching distribution found for numpy==1.22.0 (from -r requirements.txt (line 1))