System information (version)

• OpenCV => 4.5.5
• Operating System / Platform => Windows 64 Bit
• Compiler => python 3.9.6

Detailed description

Install instructions here don't mention dll dependency - https://docs.opencv.org/4.x/d5/de5/tutorial_py_setup_in_windows.html

Steps to reproduce

install opencv following the instructions. Unable to import cv2 due to : "ImportError: DLL load failed while importing cv2: The specified module could not be found.". Copying opencv_world455.dll alongside the pyd resolves this and should be mentioned in the install instructions.