Develop Reference

How to parse Java code in Python using ANTLRv4

I'm trying to parse some Java code in Python using ANTLRv4. I've tried to follow this post, but I get the following error:
File "/home/xxxxxxx/xxxxxxx/xxxxxxx/antlr/proto_antlr.py", line 14, in <module>
main()
File "/home/xxxxxxx/xxxxxxx/xxxxxxx/antlr/proto_antlr.py", line 9, in main
tree = parser.compilationUnit()
File "/home/xxxxxxx/xxxxxxx/xxxxxxx/antlr/Java8Parser.py", line 4182, in compilationUnit
self.enterRule(localctx, 62, self.RULE_compilationUnit)
File "/home/xxxxxxx/xxxxxxx/xxxxxxx/lib/python3.8/site-packages/antlr4/Parser.py", line 374, in enterRule
self._ctx.start = self._input.LT(1)
File "/home/xxxxxxx/xxxxxxx/xxxxxxx/lib/python3.8/site-packages/antlr4/CommonTokenStream.py", line 62, in LT
self.lazyInit()
File "/home/xxxxxxx/xxxxxxx/xxxxxxx/lib/python3.8/site-packages/antlr4/BufferedTokenStream.py", line 187, in lazyInit
self.setup()
File "/home/xxxxxxx/xxxxxxx/xxxxxxx/lib/python3.8/site-packages/antlr4/BufferedTokenStream.py", line 190, in setup
self.sync(0)
File "/home/xxxxxxx/xxxxxxx/xxxxxxx/lib/python3.8/site-packages/antlr4/BufferedTokenStream.py", line 112, in sync
fetched = self.fetch(n)
File "/home/xxxxxxx/xxxxxxx/xxxxxxx/lib/python3.8/site-packages/antlr4/BufferedTokenStream.py", line 124, in fetch
t = self.tokenSource.nextToken()
File "/home/xxxxxxx/xxxxxxx/xxxxxxx/lib/python3.8/site-packages/antlr4/Lexer.py", line 130, in nextToken
self._tokenStartLine = self._interp.line_number
AttributeError: 'LexerATNSimulator' object has no attribute 'line_number'
I can't figure out what I'm doing wrong. The file I'm trying to parse is proper Java, it's extracted from the docker-maven-plugin package. I've tried with other files, but I get the same error.
Any idea ?

Actually it was just a problem of violent refactorization... I've changed line to line_number in my code, and it actually changed it in librairies too. Changing it back to line cleared the problem.
Thanks to #Thomas Kläger for making me realize it.

tensorflow.python.framework.errors_impl.NotFoundError: data/kitti_label_map.pbtxt; No such file or directory

I'm trying to convert the kitti dataset into the tensorflow .record. After I typed the command:
python object_detection/dataset_tools/create_kitti_tf_record.py
--lable_map_path=object_detection/data/kitti_label_map.pbtxt --data_dir=/Users/zhenglyu/Graduate/research/DataSet/kitti/data_object_image_2/testing/image_2
--output_path=/Users/zhenglyu/Graduate/research/DataSet/kitti2tf/train.record
validation_set_size=1000
I got this error:
Traceback (most recent call last): File
"object_detection/dataset_tools/create_kitti_tf_record.py", line 310,
in
tf.app.run() File "/Users/zhenglyu/tensorflow/lib/python3.6/site-packages/tensorflow/python/platform/app.py",
line 126, in run
_sys.exit(main(argv)) File "object_detection/dataset_tools/create_kitti_tf_record.py", line 307,
in main
validation_set_size=FLAGS.validation_set_size) File "object_detection/dataset_tools/create_kitti_tf_record.py", line 94,
in convert_kitti_to_tfrecords
label_map_dict = label_map_util.get_label_map_dict(label_map_path) File
"/Users/zhenglyu/Graduate/research/TensorFlow/model/research/object_detection/utils/label_map_util.py",
line 152, in get_label_map_dict
label_map = load_labelmap(label_map_path) File "/Users/zhenglyu/Graduate/research/TensorFlow/model/research/object_detection/utils/label_map_util.py",
line 132, in load_labelmap
label_map_string = fid.read() File "/Users/zhenglyu/tensorflow/lib/python3.6/site-packages/tensorflow/python/lib/io/file_io.py",
line 120, in read
self._preread_check() File "/Users/zhenglyu/tensorflow/lib/python3.6/site-packages/tensorflow/python/lib/io/file_io.py",
line 80, in _preread_check
compat.as_bytes(self.name), 1024 * 512, status) File "/Users/zhenglyu/tensorflow/lib/python3.6/site-packages/tensorflow/python/framework/errors_impl.py",
line 519, in __exit
c_api.TF_GetCode(self.status.status)) tensorflow.python.framework.errors_impl.NotFoundError:
data/kitti_label_map.pbtxt; No such file or directory
The file exists for sure. And I don't know why as I set the label_map_path to another one (object_detection/data/kitti_label_map.pbtxt), the path still remains the default setting (data/kitti_label_map.pbtxt).
I know there's a lot of related problem but none of the solutions that I found works for me. I used Virtualenv to install the tensorflow and using python 3.6. Could these be the problem? Thanks!

I don't have a definitive solution to this but here is what resolved it.
First, I copied the kitti_label_map.pbtxt into the data_dir. Then I also copied create_kitti_tf_record.py into the data_dir. And now I copied(this is what made it run in the end) the name and absolute path of the kitti_label_map.pbtxt and pasted it as label_map_path
I have no idea why but it worked.

Keepass and libkeepass on windows?

I've been using keepass and libkeepass to access the key database via Python. Although the code works on linux it does not work on Windows, I receive this error relating to the keyfile:
with libkeepass.open(db_path, keyfile) as kdb:
File "C:\Python27\lib\contextlib.py", line 17, in __enter__
return self.gen.next()
File "build\bdist.win-amd64\egg\libkeepass\__init__.py", line 33, in open
File "build\bdist.win-amd64\egg\libkeepass\kdb4.py", line 380, in __init__
File "build\bdist.win-amd64\egg\libkeepass\kdb4.py", line 54, in __init__
File "build\bdist.win-amd64\egg\libkeepass\common.py", line 137, in __init__
File "build\bdist.win-amd64\egg\libkeepass\kdb4.py", line 383, in read_from
File "build\bdist.win-amd64\egg\libkeepass\kdb4.py", line 72, in read_from
File "build\bdist.win-amd64\egg\libkeepass\common.py", line 143, in read_from
File "build\bdist.win-amd64\egg\libkeepass\kdb4.py", line 191, in _decrypt
IOError: Master key invalid.
I had quite a bit of trouble getting libkeepass installed on windows as opposed to linux. Not sure if this effecting it, the library loads fine it just doesn't seem to be able to use the keyfile.
I'm open to suggestions for a better key database that has a more robust python API if one exists, it needs to be a free to use piece of software?
TIA

KeyError: 'browser' with Splinter and Behaving automated testing

I followed the instructions here: http://shon.github.io/2014/06/19/ui_testing_and_bdd.html about setting up Splinter with Behaving to run automated tests. I'm able to run a test successfully, but at the end of the test, it throws an error saying:
KeyError: 'browser'
and it won't continue testing any additional feature files. I'm pretty new to python and need some help in troubleshooting this.
Exception KeyError: 'browser'
Traceback (most recent call last):
File "/usr/local/bin/behave", line 11, in <module> sys.exit(main())
File "/Library/Python/2.7/site-packages/behave/__main__.py", line 109, in main
failed = runner.run()
File "/Library/Python/2.7/site-packages/behave/runner.py", line 672, in run
return self.run_with_paths()
File "/Library/Python/2.7/site-packages/behave/runner.py", line 693, in run_with_paths
return self.run_model()
File "/Library/Python/2.7/site-packages/behave/runner.py", line 483, in run_model
failed = feature.run(self)
File "/Library/Python/2.7/site-packages/behave/model.py", line 523, in run
failed = scenario.run(runner)
File "/Library/Python/2.7/site-packages/behave/model.py", line 867, in run
runner.run_hook('before_scenario', runner.context, self)
File "/Library/Python/2.7/site-packages/behave/runner.py", line 405, in run_hook
self.hooks[name](context, *args)
File "features/environment.py", line 48, in before_scenario
context.browser = default_browser
File "/Library/Python/2.7/site-packages/behave/runner.py", line 223, in __setattr__
record = self._record[attr]
KeyError: 'browser'

I found the issue. It is related to the Feature file structure. The Feature file was missing:
Background:
Given a browser
This also required changes to the environment.py file based on the info here: https://github.com/ggozad/behaving

Error when trying to convert .sxw file to .rml in OpenERP 6.0.3

[2012-06-01 15:33:10,638][molisamples] ERROR:web-services:Uncaught exception
Traceback (most recent call last):
File "osv\osv.pyo", line 122, in wrapper
File "osv\osv.pyo", line 176, in execute
File "osv\osv.pyo", line 167, in execute_cr
File "C:\Program Files (x86)\OpenERP 6.0\Server\addons\base_report_designer\base_report_designer.py", line 42, in sxwtorml
File "C:\Program Files (x86)\OpenERP 6.0\Server\addons\base_report_designer\openerp_sxw2rml\openerp_sxw2rml.py", line 309, in sxw2rml
File "C:\Program Files (x86)\OpenERP 6.0\Server\addons\base_report_designer\openerp_sxw2rml\openerp_sxw2rml.py", line 294, in unpackNormalize
File "C:\Program Files (x86)\OpenERP 6.0\Server\addons\base_report_designer\openerp_sxw2rml\openerp_sxw2rml.py", line 269, in oo_read
File "zipfile.pyo", line 346, in init
File "zipfile.pyo", line 366, in _GetContents
File "zipfile.pyo", line 378, in _RealGetContents
BadZipfile: File is not a zip file
I get the above error when I try to convert a report I just designed to .rml (using Open Office Writer). Please what could be the issue. I am seriously confused here

You can convert your .sxw to .rml using base_report_designer module.
Try following steps:
Open terminal -> go to openerp_sxw2rml folder like this:
cd addons/base_report_designer/openerp_sxw2rml
Then run this command: python openerp_sxw2rml.py absolute path of sxw > absolute path of rml
Like this:
python openerp_sxw2rml.py /home/arya/my_module/report/my_report.sxw > /home/arya/my_module/report/my_report.rml
This will convert sxw file into rml and you can find your file at given path of rml.
Thank you.

The error says that the file is not a zip file, so it's probably expecting the compressed format of sxw file. Any chance you saved the file in OpenOffice's uncompressed format?

Make sure when you save in Openoffice Writer, you select the old format, the one with SXW extension.
Don't just type .sxw, make sure the program puts it there by itself by selecting the correct entry in the fileformat selectionbox (i forget the full title and cannot check atm)

I figured it out. I had some errors in the python parser file for the report. That's what was causing the issue. It's been fixed now. Thanks y'all for the help