chart.py 文件源码

python
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项目:RePhraser 作者: MissLummie 项目源码 文件源码
def save_grammar(self, *args):
        filename = asksaveasfilename(filetypes=self.GRAMMAR_FILE_TYPES,
                                     defaultextension='.cfg')
        if not filename: return
        try:
            if filename.endswith('.pickle'):
                pickle.dump((self._chart, self._tokens), open(filename, 'w'))
            else:
                file = open(filename, 'w')
                prods = self._grammar.productions()
                start = [p for p in prods if p.lhs() == self._grammar.start()]
                rest = [p for p in prods if p.lhs() != self._grammar.start()]
                for prod in start: file.write('%s\n' % prod)
                for prod in rest: file.write('%s\n' % prod)
                file.close()
        except Exception, e:
            tkMessageBox.showerror('Error Saving Grammar',
                                   'Unable to open file: %r' % filename)
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