I am having trouble importing tika in a python file. I have spent a lot of time googling and been unable to find anything. Here is the iPython command: import tika, and subsequent stack trace.
It occurs to me that there could be a problem with a module on which tika is dependent, such as requests, or urllib3. However, when I try to install those with pip, it says requirement already satisfied. I have also double checked the PYTHONHOME director, and I'm 99% sure it's correct.
$ ipython
Python 3.6.1 (v3.6.1:69c0db5, Mar 21 2017, 17:54:52) [MSC v.1900 32 bit (Intel)]
Type "copyright", "credits" or "license" for more information.
IPython 4.2.1 -- An enhanced Interactive Python.
? -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help -> Python's own help system.
object? -> Details about 'object', use 'object??' for extra details.
WARNING: Readline services not available or not loaded.
WARNING: Proper color support under MS Windows requires the pyreadline library.
You can find it at:
http://ipython.org/pyreadline.html
Defaulting color scheme to 'NoColor'
In [1]: import tika
---------------------------------------------------------------------------
ImportError Traceback (most recent call last)
C:\cygwin64\lib\python3.6\site-packages\requests\packages\__init__.py in <module>()
26 try:
---> 27 from . import urllib3
28 except ImportError:
ImportError: cannot import name 'urllib3'
During handling of the above exception, another exception occurred:
ValueError Traceback (most recent call last)
<ipython-input-1-9f3de0ba3e70> in <module>()
----> 1 import tika
C:\cygwin64\lib\python3.6\site-packages\tika\tika.py in <module>()
18
19 try:
---> 20 __import__('pkg_resources').declare_namespace(__name__)
21 except ImportError:
22 from pkgutil import extend_path
C:\cygwin64\lib\python3.6\site-packages\pkg_resources\__init__.py in declare_namespace(packageName)
2161 # Ensure all the parent's path items are reflected in the child,
2162 # if they apply
-> 2163 _handle_ns(packageName, path_item)
2164
2165 finally:
C:\cygwin64\lib\python3.6\site-packages\pkg_resources\__init__.py in _handle_ns(packageName, path_item)
2096 path = module.__path__
2097 path.append(subpath)
-> 2098 loader.load_module(packageName)
2099 _rebuild_mod_path(path, packageName, module)
2100 return subpath
C:\cygwin64\lib\python3.6\site-packages\tika\tika.py in <module>()
89 open = codecs.open
90
---> 91 import requests
92 import socket
93 import tempfile
C:\cygwin64\lib\python3.6\site-packages\requests\__init__.py in <module>()
50 # Attempt to enable urllib3's SNI support, if possible
51 try:
---> 52 from .packages.urllib3.contrib import pyopenssl
53 pyopenssl.inject_into_urllib3()
54 except ImportError:
C:\cygwin64\lib\python3.6\site-packages\requests\packages\__init__.py in <module>()
27 from . import urllib3
28 except ImportError:
---> 29 import urllib3
30 sys.modules['%s.urllib3' % __name__] = urllib3
31
C:\cygwin64\lib\python3.6\site-packages\urllib3\__init__.py in <module>()
6 import warnings
7
----> 8 from .connectionpool import (
9 HTTPConnectionPool,
10 HTTPSConnectionPool,
C:\cygwin64\lib\python3.6\site-packages\urllib3\connectionpool.py in <module>()
9
10
---> 11 from .exceptions import (
12 ClosedPoolError,
13 ProtocolError,
C:\cygwin64\lib\python3.6\site-packages\urllib3\exceptions.py in <module>()
1 from __future__ import absolute_import
----> 2 from .packages.six.moves.http_client import (
3 IncompleteRead as httplib_IncompleteRead
4 )
5 # Base Exceptions
ValueError: source code string cannot contain null bytes
In case anyone else is looking at this, here is how I finally solved my issue.
I had been mistakenly assuming that the python-tika module was a fully packaged, ready to run version of tika. In fact, you need to download the java tika server from Apache, and it must be running when you use python-tika (you can easily just run the server on localhost).
The Python-tika module then allows you to make requests to this server from your python code. I probably should have known this but for some reason I didn't pick it up in the documentation.