[incubator-mxnet] branch master updated: more informative error message for deferred init (#7976)

[jx...@apache.org]

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jxie pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-mxnet.git


The following commit(s) were added to refs/heads/master by this push:
     new 812ee67  more informative error message for deferred init (#7976)
812ee67 is described below

commit 812ee6714c3763211f956f90e3cc92745e0efe90
Author: Sheng Zha <sz...@users.noreply.github.com>
AuthorDate: Thu Sep 21 11:43:29 2017 -0700

    more informative error message for deferred init (#7976)
---
 python/mxnet/gluon/parameter.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/python/mxnet/gluon/parameter.py b/python/mxnet/gluon/parameter.py
index 4bc2611..06ffe3d 100644
--- a/python/mxnet/gluon/parameter.py
+++ b/python/mxnet/gluon/parameter.py
@@ -146,7 +146,12 @@ class Parameter(object):
                 "It was only initialized on %s."%(
                     self.name, str(ctx), str(self._ctx_list)))
         if self._deferred_init:
-            raise DeferredInitializationError
+            raise DeferredInitializationError(
+                "Parameter %s has not been initialized yet because initialization was " \
+                "deferred. Actual initialization happens during the first forward pass. " \
+                "Please pass one batch of data through the network before accessing Parameters. " \
+                "You can also avoid deferred initialization by specifying in_units, " \
+                "num_features, etc., for network layers."%(self.name))
         raise RuntimeError(
             "Parameter %s has not been initialized. Note that " \
             "you should initialize parameters and create Trainer " \

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