How to know if your script is executed in a QGis python console or a standard python console?

Question

Is there any way to detect if a script is computed on QGIS python console or not?

Any attribute or test to assess it?

• Joseph: Isn't this just a dupilcate of your previous question? Is my script executed from a QGIS plugin or from a standard python console? Conditional Imports
• Nono: This one is more general, but I'll edit the other one to be distinct, you're right. Both can be useful for different use cases.

Answer 1

You sure can.

import qgis.utils
inqgis = qgis.utils.iface is not None

In QGIS this will return True outside it will return False

• Nono: I found also : from PyQt4.QtCore import * QSettings() returns an error outside QGIS, ty both of you!
• Luigi Pirelli: basing on QSettings is not a correct solution... you script can be executed in a QApplication that is not qgis and it will return the appliaciton conf

Answer 2

I didn't check, try this:

A) from qgis.utils import iface

• can generate importError exception in case not initQgis with correct prefix => outside qgis!

B) iface.mainWindow() == None

• if not error in A => you can be in a qgis standalone app => then you verify if a mainwindow has been ininitialized

giev us a feedbak

• Luigi Pirelli: ok... I didn't check that iface is None... tnx @nathan