Check which of your dependencies already support python 3
Check which of your dependencies already support python 3.
$ py3support requirements.txt Python 3 support level: 50% (2/4) Python 3 ======== requests==1.0.4 docutils==0.10 Python 2 ======== Flask==0.9 Unknown ======= PIL==1.1.6
The only easy way to tell if package supports python 3 is to trust author’s classifiers. This tool hits PyPI index to check what python versions do your dependencies support.
Some packages might support python 3, but do not have required metadata, some packages might state py3 support, but it’s not there yet (gunicorn). After all, a lot of package authors don’t provide python version classifiers at all.