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The Python spaCy JSON-NLP package

Project description

spaCy to JSON-NLP

(C) 2019 by Damir Cavar, Oren Baldinger, Maanvitha Gongalla, Anurag Kumar, Murali Kammili

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This only works with spaCy 2.1.0!

I had the same issue. I downgraded Spacy from 2.1.4 to 2.1.0 and numpy to 1.14.5 to resolve.


Currently this module requires Python 3.6+.

This module provides a spaCy v2.1 wrapper for JSON-NLP. It takes the spaCy output and generates a JSON-NLP output. It also provides a Microservice wrapper that allows you to launch the spaCy module as a persistent RESTful service using Flask or other WSGI-based server.

Since this microservice is built on spaCy, you will need to have its models download, for example:

python -m spacy download en
python -m spacy download en_core_web_md

Additional Pipeline Modules

spaCy allows for the addition of additional models as pipeline modules. We provide such integrations for coreference and phrase structure trees.

Anaphora and Coreference Resolution

We provide HuggingFace coreference resolution, a fast system tightly integrated into spaCy. Note that the first time the parser is run, it will download the coreference models if they are not already present. These models only work for English.

Phrase Structure Trees (Constituency Parse)

We provide the CPU version of the benepar parser, a highly accurate phrase structure parser. Bear in mind it is a Tensorflow module, as such it has a notable start-up time, and relatively high memory requirements (4GB+).

If you have a GPU available, you can install the GPU version of the module with:

pip install --upgrade benepar[gpu] 


The JSON-NLP repository provides a Microservice class, with a pre-built implementation of Flask. To run it, execute:

python spacyjsonnlp/

Since extends the Flask app, a WSGI file would contain:

from spacyjsonnlp.server import app as application

To disable a pipeline component (such as phrase structure parsing), add

application.constituents = False

The full list of properties that can be disabled or enabled are

  • constituents
  • dependencies
  • coreference
  • expressions

The microservice exposes the following URIs:

  • /constituents
  • /dependencies
  • /coreference
  • /expressions
  • /token_list

These URIs are shortcuts to disable the other components of the parse. In all cases, tokenList will be included in the JSON-NLP output. An example url is:

http://localhost:5000/dependencies?text=I am a sentence

Text is provided to the microservice with the text parameter, via either GET or POST. If you pass url as a parameter, the microservice will scrape that url and process the text of the website.

The spaCy language model to use for parsing can be selected with the spacy_model parameter.

Here is an example GET call:

http://localhost:5000?spacy_model=en&constituents=0&text=I am a sentence.

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