Celery raised unexpected LookUp Error - django

Question

I am using celery for my django project.
java_path = "/your/Java/jdk/home/java.exe
os.environ['JAVAHOME'] = java_path
st = POSTagger('/your/postagger/models/path/english-bidirectional-distsim.tagger','/your/postagger/jar/file/path/stanford-postagger.jar')
tag = st.tag([key])
here the key is a list of feature words.
I got following errors, when using celery to execute:
raised unexpected:
LookupError('\n\n===========================================================================\nNLTK
`was unable to find the java file!\nUse software specific configuration paramaters or set the JAVAHOME environment`
variable.\n===========================================================================',)
Traceback (most recent call last):
File "/Users/Envs/lib/python2.7/site-packages/celery/app/trace.py", line 240, in trace_task
R = retval = fun(*args, **kwargs)
File "/Users/Envs/lib/python2.7/site-packages/celery/app/trace.py", line 438, in __protected_call__
return self.run(*args, **kwargs)
File "/Users/Envs/src/evolvelearning/tasks.py", line 772, in RunProgram
tag = st.tag([key])
File "/Users/Envs/lib/python2.7/site-packages/nltk/tag/stanford.py", line 59, in tag
return self.tag_sents([tokens])[0]
File "/Users/Envs/lib/python2.7/site-packages/nltk/tag/stanford.py", line 64, in tag_sents
config_java(options=self.java_options, verbose=False)
File "/Users/Envs/lib/python2.7/site-packages/nltk/internals.py", line 82, in config_java
_java_bin = find_binary('java', bin, env_vars=['JAVAHOME', 'JAVA_HOME'], verbose=verbose, binary_names=['java.exe'])
File "/Users/Envs/lib/python2.7/site-packages/nltk/internals.py", line 544, in find_binary
binary_names, url, verbose))
File "/Users/Envs/lib/python2.7/site-packages/nltk/internals.py", line 538, in find_binary_iter
url, verbose):
File "/Users/Envs/lib/python2.7/site-packages/nltk/internals.py", line 517, in find_file_iter
raise LookupError('\n\n%s\n%s\n%s' % (div, msg, div))
LookupError:
===========================================================================
NLTK was unable to find the java file!
Use software specific configuration paramaters or set the JAVAHOME environment variable.
===========================================================================
I have set java_path and javahome and I would like to know why still thess errors occur?

Answer 1

my environment is MAC.
The problem is the java_path, should be:
java_path = "/your/Java/jdk/home