These projects pledge to drop Python 2 support in or before 2020.

• pandas
• IPython
• mitmproxy
• Kivy
• Matplotlib
• NumPy
• Zulip
• SymPy
• Jupyter notebook
• Scikit Image
• PyMC3
• xonsh
• Astropy
• Biopython
• Pythran
• xarray
• dateutil
• Tryton
• PyStan
• MNE
• Software Carpentry
• scikit-bio
• fecon235
• SunPy
• Axelrod
• rpy2
• FEniCS
• RDKit
• Toyplot
• MetPy
• Psi4
• OpenQuake engine
• yt
• cmd2
• osBrain
• PyMeasure
• Chaquopy

• python-chess
• Altair
• music21
• imageio
• An Introduction to Applied Bioinformatics
• QIIME
• SPADE
• gala
• CIS
• cual-id
• stomp.py