“pattern” package for python 3.6 Anaconda

Question

I have Anaconda environment on my machine for python 3.6 When I try to install pattern package through pip, it gave an error saying something like

parentheses around print n

Then I tried conda install -c asmeurer pattern=2.5; as well as conda install -c asmeurer pattern . It says

UnsatisfiableError: The following specifications were found to be in conflict: - pattern -> python 2.7* - python 3.6*"

Finally, I got to know that python 3 does not have pattern directly.

So, I tried downloading pattern zip from http://www.clips.ua.ac.be/pattern . Now, when I ran python ./setup.py install . It again give errors related to parentheses around print n

I have tried almost everything, but unable to install pattern package in my python 3.6 Anaconda environment. Can someone please help me out here , some workaround for this?

Answer 1

I installed PIP with Conda

conda install pip

and then installed Pattern with

pip install Pattern3

it worked :)

Answer 2

I'm not sure how this relates to Anaconda, but this worked for me to get pattern.en working in python 3.6 :

git clone -b development https://github.com/clips/pattern
cd pattern
sudo python3.6 setup.py install

https://github.com/clips/pattern/issues/62

I had some SSL errors during installation on my mac (10.11.6) that were fixed by running this code in python (3.6):

import nltk
import ssl 

try:
    _create_unverified_https_context = ssl._create_unverified_context
except AttributeError:
    pass
else:
    ssl._create_default_https_context = _create_unverified_https_context

nltk.download('wordnet_ic')

apparently there's a better way to deal with ssl stuff like this fwiw: https://stackoverflow.com/a/41351871/8870055

sanity check:

user@USDR00253 ~> python3.6
Python 3.6.4 (v3.6.4:d48ecebad5, Dec 18 2017, 21:07:28)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>
>>> from pattern.en import conjugate, lemma, lexeme, parse
>>>
>>> print(parse('ridden', relations=True, lemmata=True))
ridden/VBN/B-VP/O/O/ride
>>>

pattern.en finally running in python3!

Answer 3

Using Windows Subsystem for Linux, I made pattern to work using miniconda in Python 3.7:

conda create -n test -c conda-forge python=3.7 pattern
conda activate test

I discovered that there is a bug with StopInteration due to PEP-479, and replacing raise StopIteration with return in pattern\\text\\__init__.py fixes it.

To find the location if the file, I executed

cd $(python -c "from distutils.sysconfig import get_python_lib;print(get_python_lib())")
nano pattern/text/__init__.py

Line 605 , just above class Lexicon(lazydict): ... replace raise StopIteration with return .

And all is working fine.