Trying to pip install atari-py 0.23 on a python 2.7 conda environment leads to the following error:

2019-07-02T03:41:24.2303198Z Using cached https://files.pythonhosted.org/packages/fc/a4/551d18c9178094a698aa5244ee52164914d65bedb68913d357d1033a58cc/atari-py-0.2.3.tar.gz
2019-07-02T03:41:24.4669762Z Complete output from command python setup.py egg_info:
2019-07-02T03:41:24.4673356Z Traceback (most recent call last):
2019-07-02T03:41:24.4674086Z File "", line 1, in
2019-07-02T03:41:24.4675307Z File "/tmp/pip-build-77t_o8/atari-py/setup.py", line 8, in
2019-07-02T03:41:24.4676866Z with open(os.path.join(os.path.dirname(file), 'atari_py', 'package_data.txt')) as f:
2019-07-02T03:41:24.4677641Z IOError: [Errno 2] No such file or directory: '/tmp/pip-build-77t_o8/atari-py/atari_py/package_data.txt'

After downloading https://files.pythonhosted.org/packages/fc/a4/551d18c9178094a698aa5244ee52164914d65bedb68913d357d1033a58cc/atari-py-0.2.3.tar.gz, I confirmed that Atari_py/package_data.txt is missing

That started happening on June 28th. Was the python 2.7 wheel package removed on that date? That could explain why this started to happen: a pre compiled wheel package was no longer found for python 2.7, leading the build from source to take place.