mx.py 文件源码

def origin(self):
        """
        Gets a 2-tuple (file, line) describing the source file where this constituent
        is defined or None if the location cannot be determined.
        """
        suitepy = self.suite.suite_py()
        if exists(suitepy):
            import tokenize
            with open(suitepy) as fp:
                candidate = None
                for t in tokenize.generate_tokens(fp.readline):
                    _, tval, (srow, _), _, _ = t
                    if candidate is None:
                        if tval == '"' + self.name + '"' or tval == "'" + self.name + "'":
                            candidate = srow
                    else:
                        if tval == ':':
                            return (suitepy, srow)
                        else:
                            candidate = None