I'd like to get into qgis-plugin development, but am rather new to both python and QGIS development.
I intend to write a plugin which connects data from a mysql database to shapefiles. As the data is related to persons, I need a kind of login before accessing the data. To avoid the user from typing his password every time he invokes the script, I wonder if it is possible to retain values between calls of the script. In the python cookbook, I found global project settings - but that is not quite what I'm looking for as the values should be forgotten on closing QGIS.
I hope I made my intentions clear in my clumpy English and somebody could give me a hint with which way to proceed.