It takes four parameters: fovy (“field-of-view y“): the vertical viewing angle. This is the angle, in degrees, from the top of the screen to the bottom. aspect: The aspect ratio, which controls the horizontal viewing angle relative to the vertical. For a non-stretched perspective, ...
In Python 3, the quote and unquote functions have been moved into the urllib.parse module, and upgraded to work on Unicode strings (by me— yay!). By default, these will encode and decode strings as UTF-8, but this can be changed with the encoding and errors parameters (seeurllib.parse...