def report(self, first, last=None, mark="*"):
        if last in None:
            last = first
        for i in range(first, last+1):
            try:
                line = self[first]
            except KeyError:
                line = "<missing line>"
            print mark, chop(line)
dataset/ETHPy150Open francelabs/datafari/windows/python/Tools/Scripts/fixdiv.py/FileContext.report/operator `is` -> `in`