__init__.py 文件源码

def __iter__(self, current=0):
        """Iterates over all Attr in this CDF or variable

        Returns name of one L{Attr} at a time until reaches the end.
        @note: Returned in number order.
        """
        count = ctypes.c_long(0)
        self._cdf_file._call(const.GET_, const.CDF_NUMATTRS_,
                             ctypes.byref(count))
        while current < count.value:
            candidate = self.AttrType(self._cdf_file, current)
            if candidate.global_scope() == self.global_scope:
                if self.special_entry is None or \
                        candidate.has_entry(self.special_entry()):
                    if str == bytes:
                        value = yield(candidate._name)
                    else:
                        value = yield(candidate._name.decode())
                    if value != None:
                        current = self[value].number()
            current += 1