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Pyrrha is a simple Python Flask WebApp to fasten the post-correction of lemmatized and morpho-syntactic tagged corpora.

How to cite

This web application and its maintenance is done by Julien Pilla (@MrGecko) and Thibault Clérice (@ponteineptique). As software is research please cite the software if you use it using the following informations:

  author       = {Clérice, Thibault and Pilla, Julien and Camps, Jean-Baptiste and Jolivet, Vincent and Pinche, Ariane},
  title        = {Pyrrha, A language independant post correction app for POS and lemmatization},
  month        = nov,
  year         = 2019,
  publisher    = {Zenodo},
  version      = {Any Version},
  doi          = {10.5281/zenodo.2325427},
  url          = {}


This software is built as an addition to the tagger Pie by Enrique Manjavacas (@emanjavacas) and Mike Kestemont (@mikekestemont) DOI It can connect to lemmatization service like Deucalion.


Pandora Post-Correction Editor


Start by cloning the repository, and moving inside the created folder

git clone
cd pyrrha/

Create a virtual environment, source it and run

pip install -r requirements.txt
python db-create


python run

Creating a new user locally

  1. Run the application
  2. Click register and register. Remember to note the user email you register with.
  3. Stop the application
  4. Run python edit-user [EMAIL] --confirm-mail --role Administrator or simply python edit-user [EMAIL] --confirm-mail if you don't want administrator role. Replace [EMAIL] with the mail you used. If you are simply running it for yourself, we would definitely recommend to use the Administrator role though.
  5. Run the application, login and enjoy !

How to contribute



-Jean-Baptiste Camps -ngawangtrinley -FrFerry -Vincent Jolivet -Ariane Pinche -saisiddhant12 -jhrdt -AdityaJ7


This app is wished to be simple and local at the moment (No User system). But to keep in the abilities to extend and use other systems, we based some of our decisions on and the general structure is following theirs.