code: def getNotesForABF(abfFile):
      
      parent=getParent(abfFile)
      parent=os.path.basename(parent).replace(".abf","")
      expFile=os.path.dirname(abfFile)+"/experiment.txt"
      if not os.path.exists(expFile):
          return "no experiment file"
      with open(expFile) as f:
          raw=f.readlines()
      for line in raw:
          if line[0]=='~':
              line=line[1:].strip()
              if line.startswith(parent):
                  while "\t\t" in line:
                      line=line.replace("\t\t","\t")
                  line=line.replace("\t","\n")
                  return line
      return "experiment.txt found, but didn't contain %s"%parent
docs: given an ABF, find the parent, return that line of experiments.txt