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

• pandas
• scikit-learn
• Tornado
• IPython
• mitmproxy
• Kivy
• Matplotlib
• NumPy
• SciPy
• ccxt
• Zulip
• SymPy
• Jupyter notebook
• Spyder
• Scikit Image
• PyMC3
• Tensorpack
• pytest
• xonsh
• Astropy
• geopy
• Biopython
• Nikola
• FontTools
• Pythran
• xarray
• dateutil
• CherryPy
• Tryton
• PyStan
• MNE
• Software Carpentry
• ADB-Enhanced
• scikit-bio
• fecon235
• SunPy
• Axelrod
• rpy2
• FEniCS
• RDKit
• Toyplot
• MetPy
• pyLast
• Psi4
• OpenQuake engine
• yt
• cmd2
• osBrain
• PyMeasure
• Chaquopy
• angr
• BioBuilds

• Hypothesis
• better-exceptions
• python-chess
• Altair
• music21
• imageio
• An Introduction to Applied Bioinformatics
• pvlib-python
• QIIME
• PySCIPOpt
• SPADE
• gala
• CIS
• cual-id
• stomp.py
• tinytext
• OSMViz
• fino
• MambuPy
• Pyramid