LArCalorimeter/LArCondUtils: (late) migration of scripts to python3, enable flake8

The two (potentially useful) scripts dumpHVPathFromNtuple.py and fillPileUpNoiseLumi.py where never migrated to python3.

This MR does the python3 migration (by using the 2to3 utility) and activates flake8 for these two scripts.

LArCalorimeter/LArCondUtils/share/dumpHVPathFromNtuple.py

 #!/bin/env python
+# Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
 
-import os,re
 import sys
-from os import popen
-import string
-import commands
 import ROOT
 
 def DumpPathology(inf, hvline, outfile, append):
 
-    try:
-       if not inf.IsOpen():
-          print 'File not open ?'
-          return
-    except:
-          return
+    if not inf.IsOpen():
+        print('File not open ?')
+        return
 
     try:
        if append:
           fout=open(outfile,'a')
        else:
           fout=open(outfile,'w')
-    except:
-          print 'Could not open output file ',outfile
+    except Exception as e:
+          print('Could not open output file ',outfile)
+          print (e)
           return
 
     tree=inf.Get("hv/mytree")
@@ -30,7 +25,7 @@ def DumpPathology(inf, hvline, outfile, append):
     br_hvline=tree.GetBranch("HVline")
     hvdict={}
     for i in range(0,tree.GetEntries()):
-       if i%10000 == 0: print i
+       if i%10000 == 0: print(i)
        br_hvline.GetEntry(i)
        if tree.HVline != hvline: continue
        tree.GetEntry(i)
@@ -49,10 +44,10 @@ def DumpPathology(inf, hvline, outfile, append):
     #print hvdict
     # now write to a file
     if not append: fout.write('/LAR/HVPathologiesOfl/Pathologies\n')
-    for k in hvdict.keys():
+    for k in list(hvdict.keys()):
        ll=hvdict[k]
        if len(ll) != 6:
-          print 'Wrong list: ',ll,' continue to next!!!'
+          print('Wrong list: ',ll,' continue to next!!!')
           continue
        wstr=str(ll[0])+' '+str(ll[1])+' '+str(ll[2])+' '+str(ll[3])+' '+str(ll[4])+' '+str(hvline/1000)+' '+str(hvline%1000)+' '+str((ihv<<4)&0xFFF0)+'\n'
        fout.write(wstr)
@@ -66,20 +61,22 @@ if __name__=="__main__":
     try:
       infile = sys.argv[1]
       inf = ROOT.TFile(infile,'read')
-    except:
-       print 'HV ntuple ',infile,' doesnt exist ?'
+    except Exception as e:
+       print('HV ntuple ',infile,' doesnt exist ?')
+       print(e)
        sys.exit()
 
-    print 'HV ntuple file: ',infile
+    print('HV ntuple file: ',infile)
 
     try:
       hvline = int(sys.argv[2])
-    except:
-       print 'HVline number doesnt exist ?'
+    except Exception as e:
+       print('HVline number doesnt exist ?')
+       print (e)
        sys.exit()
 
     if hvline < 1000 or hvline > 400000:
-       print 'wrong HV line number: ',hvline
+       print('wrong HV line number: ',hvline)
        sys.exit()
 
     if len(sys.argv) > 3:
@@ -87,7 +84,7 @@ if __name__=="__main__":
     else:
        outfile='hvpat.txt'
 
-    print 'Output file: ',outfile
+    print('Output file: ',outfile)
 
     if len(sys.argv) > 4:
        if int(sys.argv[4])==0: 
@@ -97,7 +94,7 @@ if __name__=="__main__":
     else:
        append=False
 
-    print 'Append to out file: ',append
+    print('Append to out file: ',append)
 
     DumpPathology(inf, hvline, outfile, append)
     inf.Close()