>>> import torch
>>> x = torch.ones(4, dtype=torch.complex128).cuda()
>>> torch.mean(x)
---------------------------------------------------------------------------
RuntimeError                              Traceback (most recent call last)
<ipython-input-108-34af2dc3edea> in <module>
      1 impo

In [16]: str_arr = np.array(["hi", "there"])

In [17]: ",".join(str_arr)
Out[17]: 'hi,there'
In [18]: numba.njit(lambda str_arr: ",".join(str_arr))(str_arr)
TypingError: Failed in nopython mode pipeline (step: nopython frontend)
- Resolution failure for literal arguments:
No implementation of function