code: def newVersion():
      
      version=None
      fname='../swhlab/version.py'
      with open(fname) as f:
          raw=f.read().split("\n")
          for i,line in enumerate(raw):
              if line.startswith("__counter__"):
                  if version is None:
                      version = int(line.split("=")[1])
                  raw[i]="__counter__=%d"%(version+1)
      with open(fname,'w') as f:
          f.write("\n".join(raw))
      print("upgraded from version %03d to %03d"%(version,version+1))
docs: increments version counter in swhlab/version.py