function_base.py 文件源码

def _vectorize_call(self, func, args):
        """Vectorized call to `func` over positional `args`."""
        if not args:
            _res = func()
        else:
            ufunc, otypes = self._get_ufunc_and_otypes(func=func, args=args)

            # Convert args to object arrays first
            inputs = [array(_a, copy=False, subok=True, dtype=object)
                      for _a in args]

            outputs = ufunc(*inputs)

            if ufunc.nout == 1:
                _res = array(outputs,
                             copy=False, subok=True, dtype=otypes[0])
            else:
                _res = tuple([array(_x, copy=False, subok=True, dtype=_t)
                              for _x, _t in zip(outputs, otypes)])
        return _res