def getSheetByType(self, type):
        for (n,t) in self.sheets.items():
            if t==type:
                return n
        return None
For a time t, str(t) is equivalent to t.isoformat().
dataset/ETHPy150Open VisTrails/VisTrails/vistrails/packages/spreadsheet/spreadsheet_registry.py/SpreadsheetRegistry.getSheetByType--crossover with--dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/zope/interface/common/idatetime.py/ITime.__str__