piiswrong closed pull request #10424: [MXNET-185] Improved error message
URL: https://github.com/apache/incubator-mxnet/pull/10424
This is a PR merged from a forked repository.
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the sake of provenance:
As this is a foreign pull request (from a fork), the diff is supplied
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diff --git a/python/mxnet/gluon/block.py b/python/mxnet/gluon/block.py
index fd95641274d..64003585dba 100644
--- a/python/mxnet/gluon/block.py
+++ b/python/mxnet/gluon/block.py
@@ -458,7 +458,13 @@ def _build_cache(self, *args):
for name in out.list_inputs()]
def _finish_deferred_init(self, hybrid, *args):
- self.infer_shape(*args)
+ try:
+ self.infer_shape(*args)
+ except Exception as e:
+ error_msg = "Deferred initialization failed because shape"\
+ " cannot be inferred \n {}".format(e)
+ raise ValueError(error_msg)
+
if hybrid:
for is_arg, i in self._cached_op_args:
if not is_arg:
@@ -509,11 +515,14 @@ def _infer_attrs(self, infer_fn, attr, *args):
"""Generic infer attributes."""
inputs, out = self._get_graph(*args)
args, _ = _flatten(args)
- arg_attrs, _, aux_attrs = getattr(out, infer_fn)(
- **{i.name: getattr(j, attr) for i, j in zip(inputs, args)})
+ with warnings.catch_warnings(record=True) as w:
+ arg_attrs, _, aux_attrs = getattr(out, infer_fn)(
+ **{i.name: getattr(j, attr) for i, j in zip(inputs, args)})
+ if arg_attrs is None:
+ raise ValueError(w[0].message)
sdict = {i: j for i, j in zip(out.list_arguments(), arg_attrs)}
sdict.update({name : attr for name, attr in \
- zip(out.list_auxiliary_states(), aux_attrs)})
+ zip(out.list_auxiliary_states(), aux_attrs)})
for i in self.collect_params().values():
setattr(i, attr, sdict[i.name])
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