sxjscience commented on a change in pull request #18251:
URL: https://github.com/apache/incubator-mxnet/pull/18251#discussion_r424828140
##########
File path: src/api/operator/numpy/np_init_op.cc
##########
@@ -216,7 +217,7 @@ MXNET_REGISTER_API("_npi.arange")
param.repeat = 1;
param.infer_range = false;
if (args[3].type_code() == kNull) {
- param.dtype = mshadow::kFloat32;
+ param.dtype = mxnet::common::GetDefaultDtype();
Review comment:
I just realized that in numpy, the default dtype of arange is int64.
```python
import numpy as np
print(np.arange(10).dtype)
import mxnet as mx
mx.npx.set_np()
print(mx.np.arange(10).dtype)
```
Output:
```
int64
float32
```
Thus, we should change the dtype to be consistent with the official numpy.
What do you think @yzhliu @leezu
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