Setting Variables on startup using PyQGIS?

Question

via startup.py it is possible to execute python code when qgis starts.

Now I wonder, whether it is possible to set variable values, eg. a string variable which holds a path or a dictionary of values, which could be used by several plugins?

Answer 1

You have to get acces to an instance of that plugin:

from qgis.utils import plugins
instance = plugins['plugin_name']

Then if you want to use some widgets from main window ex.:

value = instance.dlg.comboBox.currentText()

If you define a variable under __init__, you can use it with:

variable = instance.variable_name