can't install the wheel file

[omiaemmanuel]

when i tried install the impy wheel file, i got this error message below. I tried to install the required python version as stated in the error message but did not work.
Any help?

ERROR: Could not find a version that satisfies the requirement opencv-python==3.4.2.17 (from impy) (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, 3.4.17.61, 3.4.17.63, 3.4.18.65, 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, 4.5.5.62, 4.5.5.64, 4.6.0.66)
ERROR: No matching distribution found for opencv-python==3.4.2.17

[mani2106]

Try install a version of opencv that is still available for download via pip, as it is described in the error message