Signed-off-by: candanzg <zhangshucheng@huawei.com>

1) A[B]=U
2) A[A>n]=U
    A.shape == B.shape
    U is a scalar or Tensor(size==1)
    B is Tensor(dtype=bool)
    n is a Number

Signed-off-by: candanzg <zhangshucheng@huawei.com>

Merge pull request !286 from wangqiuliang/resolve-pynative-operator-issue

Merge pull request !106 from amongo/SupportPythonOperators

fix pylint

use scalar_lt primitive directly

fix review

Previously function op_select_format and check_supported raise an exception directly on the tbe_process python side, but we don't deal with the exception, and raise an exeception on c++ side to frontend ME, that will cause some conflict when recycle resource on ME and tbe_process python interpreter.
This changes adding try...catch in function op_select_format and check_supported on the python side, and return the Exception string to c++ side, so that we can raise an exception to frontend ME and ME will deal with resouce clearning and exit.

Signed-off-by: leonwanghui <leon.wanghui@huawei.com>