unique filenames, circumvent Geant thread in filename, del root& save pkl

bind/G4Calo.py

@@ -5,8 +5,10 @@ import plotly.graph_objects as go
 import pandas as pd
 import numpy as np
 import os
+import glob
 import subprocess
 import uproot
+import time
 
 from IPython.display import Image, display
 
@@ -21,18 +23,39 @@ class __G4System(_G4System):
         minEnergy_GeV: float,
         maxEnergy_GeV: float = -1.0,
     ):
+
         if maxEnergy_GeV < 0:
             maxEnergy_GeV = minEnergy_GeV
-        _G4System.run_batch(self, nEvents, particleSpec, minEnergy_GeV, maxEnergy_GeV)
+
+        # filename without file ending(!)
+        filename = "_" + str(time.perf_counter_ns()) + ".root"
+        _G4System.run_batch(self, nEvents, particleSpec, minEnergy_GeV, maxEnergy_GeV, filename=filename)
+        
+        # TO FIX: Geant4 adds "t<threadnumber>" to the filename, circumvent this for one thread, but this is not a good solution
+        file = glob.glob(filename.replace(".root",  "*.root"))
+        print(file)
+        if len(file)>1:
+            raise Exception("More than one file found! - Check mulithreading")
+        else:
+            filename = file[0]
 
         # conversion from root to pandas dataframe
-        ttree = uproot.open("_1234567890_Hits.root")
+        
+        # TO FIX: circumvent index out of bounds error
+        ttree = uproot.open(filename)
         try:
             df = ttree["Hits;1"].arrays(library="pd")
         except:
             df = index_out_of_bounds_workaround(ttree["Hits;1"])
+
+        # save to pickle and delete root file
+        df.to_pickle(filename.replace(".root", ".pkl"))
+        os.system("rm "+filename)
+        
         return df
 
+
+
     def displayEvent(self, logE = False, renderer=None):
         # for loop over all layers
         to_plot = []