Скачать или смотреть How to install wheel (.whl) packages for Python

Errors that can occur while importing a package: Wrong name e.g AD3 in stead of ad3. Find the correct name in the index of the website where you can downlaod the wheel files (Python packages): http://www.lfd.uci.edu/~gohlke/python...

Incorrect installation: not installed or installed for the wrong Python version (if you have multiple versions installed).

The wheel file can be deleted after installation.

Tip: Hit the tab key (one or multiple times) after typing the first letter of the file in the command prompt to navigate to the right file without having to type the whole file name.

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More about wheel files: http://pythonwheels.com/