为什么SyntaxNet demo.sh找不到正确的导入？

Question

我浏览了https://github.com/tensorflow/models/tree/master/syntaxnet，并按它说的做了。

我运行这个来测试：

bazel test --linkopt=-headerpad_max_install_names \
    syntaxnet/... util/utf8/...

我只能通过6次测试，6次失败。

但是当我运行演示时，我得到了错误。

User:syntaxnet hk$ echo "Parsey McParseface is my favorite parser" | syntaxnet/demo.sh

Traceback (most recent call last):
  File "/git/models/syntaxnet/bazel-bin/syntaxnet/conll2tree.runfiles/syntaxnet/conll2tree.py", line 20, in <module>
    import tensorflow as tf
  File "/git/models/syntaxnet/bazel-bin/syntaxnet/conll2tree.runfiles/external/tf/tensorflow/__init__.py", line 23, in <module>
    from tensorflow.python import *
  File "/git/models/syntaxnet/bazel-bin/syntaxnet/conll2tree.runfiles/external/tf/tensorflow/python/__init__.py", line 45, in <module>
    from tensorflow.python import pywrap_tensorflow
ImportError: cannot import name pywrap_tensorflow
Traceback (most recent call last):
Traceback (most recent call last):
  File "/git/models/syntaxnet/bazel-bin/syntaxnet/parser_eval.runfiles/syntaxnet/parser_eval.py", line 23, in <module>
  File "/git/models/syntaxnet/bazel-bin/syntaxnet/parser_eval.runfiles/syntaxnet/parser_eval.py", line 23, in <module>
    import tensorflow as tf
  File "/git/models/syntaxnet/bazel-bin/syntaxnet/parser_eval.runfiles/external/tf/tensorflow/__init__.py", line 23, in <module>
    import tensorflow as tf
  File "/git/models/syntaxnet/bazel-bin/syntaxnet/parser_eval.runfiles/external/tf/tensorflow/__init__.py", line 23, in <module>
    from tensorflow.python import *
  File "/git/models/syntaxnet/bazel-bin/syntaxnet/parser_eval.runfiles/external/tf/tensorflow/python/__init__.py", line 45, in <module>
    from tensorflow.python import *
  File "/git/models/syntaxnet/bazel-bin/syntaxnet/parser_eval.runfiles/external/tf/tensorflow/python/__init__.py", line 45, in <module>
    from tensorflow.python import pywrap_tensorflow
ImportError:     from tensorflow.python import pywrap_tensorflow
cannot import name pywrap_tensorflow
ImportError: cannot import name pywrap_tensorflow

到底怎么回事？demo.sh是否在与放置位置不同的位置查找这些python导入？

Answer 1

解决了。我遗漏了bazel安装中的一些步骤，特别是“获取bash完成”。我还以为那只是给jdk7用的。

Answer 2

再次尝试使用bazel命令构建和测试SyntaxNet。我遇到了一个非常类似的错误，bazel在我的机器上找不到python目录。在几次尝试定位python目录之后，bazel用一次失败测试(根据bazel，这是一个本地主机错误)完成了SyntaxNet的构建和测试，demo.sh工作得很好。

我再次尝试构建和测试Syntaxnet，好消息是这次它通过了12个测试。

INFO: Elapsed time: 88.935s, Critical Path: 31.63s
//syntaxnet:arc_standard_transitions_test                       (cached) PASSED in 3.5s
//syntaxnet:beam_reader_ops_test                                (cached) PASSED in 20.6s
//syntaxnet:graph_builder_test                                  (cached) PASSED in 21.4s
//syntaxnet:lexicon_builder_test                                (cached) PASSED in 8.7s
//syntaxnet:parser_features_test                                (cached) PASSED in 0.7s
//syntaxnet:parser_trainer_test                                 (cached) PASSED in 36.4s
//syntaxnet:reader_ops_test                                     (cached) PASSED in 6.0s
//syntaxnet:sentence_features_test                              (cached) PASSED in 1.6s
//syntaxnet:tagger_transitions_test                             (cached) PASSED in 1.6s
//syntaxnet:text_formats_test                                   (cached) PASSED in 8.7s
//util/utf8:unicodetext_unittest                                (cached) PASSED in 5.6s
//syntaxnet:shared_store_test                                            PASSED in 6.0s

Executed 1 out of 12 tests: 12 tests pass.

bazel的这个额外的提醒可能会有所帮助：

There were tests whose specified size is too big. Use the --test_verbose_timeout_warnings command line option to see which ones these are.

希望这能有所帮助。