Where can I find a working python example？

Getting Started
1

I have built Geant4 successfully. But the following code does not work. Are there any python examples? Thanks!

from Geant4 import *

class DetectorConstruction(G4VUserDetectorConstruction):
def init(self):
super(DetectorConstruction, self).init()

class ActionInitialization(G4VUserPrimaryGeneratorAction):
def init(self):
super(ActionInitialization, self).init()

detector = DetectorConstruction()
gRunManager.SetUserInitialization(detector)
physicsList = FTFP_BERT()
gRunManager.SetUserInitialization(physicsList)
gRunManager.SetUserAction(ActionInitialization())

gRunManager.Initialize()

The errors are:
Traceback (most recent call last):
File “/home/test/PycharmProjects/pythonProject/B1/test.py”, line 20, in
gRunManager.Initialize()
TypeError: ‘NoneType’ object is not callable

2

We’ll be working on updating the Python examples this year, so there aren’t as such official examples yet. @kmura, can you spot what could be going wrong in the above?