pip install pytest fails - Mo matching found for py>=1.5.0 for python3.3

[ColinKennedy]

I'm using a tox environment and all of its tests pass in Python 2.7,3.4-6 except for in Python 3.3. It just started happening last night and persisted into this morning, both on my Linux environment locally and also remotely

Here is the log for when I try to run

python3.3 -m pip install pytest

Collecting pytest
  Using cached pytest-3.3.0-py2.py3-none-any.whl
Requirement already satisfied: setuptools in /usr/local/lib/python3.3/dist-packages (from pytest)
Collecting attrs>=17.2.0 (from pytest)
  Using cached attrs-17.3.0-py2.py3-none-any.whl
Collecting pluggy<0.7,>=0.5 (from pytest)
  Downloading pluggy-0.5.2.tar.gz
Collecting py>=1.5.0 (from pytest)
  Could not find a version that satisfies the requirement py>=1.5.0 (from pytest) (from versions: 0.9.1, 0.9.2, 1.0.0, 1.0.1, 1.0.2, 1.1.0, 1.1.1, 1.2.0, 1.2.1, 1.3.0, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5, 1.4.6, 1.4.7.dev3, 1.4.7, 1.4.8, 1.4.9, 1.4.10, 1.4.11, 1.4.12, 1.4.13, 1.4.14, 1.4.15, 1.4.16, 1.4.17, 1.4.18, 1.4.19, 1.4.20, 1.4.21, 1.4.22, 1.4.23, 1.4.24, 1.4.25, 1.4.26, 1.4.27, 1.4.28, 1.4.29, 1.4.30, 1.4.31, 1.4.32, 1.4.33, 1.4.34)
No matching distribution found for py>=1.5.0 (from pytest)

Here's a report of the failing test remotely:
https://travis-ci.org/ColinKennedy/ways/jobs/308277578
That Travis-CI link refers to a log with more output. This pastebin link is that log: https://pastebin.com/rk8EUq0E

OS:
Ubuntu 16.04.2 LTS

I have a feeling this is simple user error on my part but it's hard to tell since I wiped my environment and am still getting the same error, locally and remotely. Any help would be greatly appreciated

[The-Compiler]

Support for Python 3.3 was dropped, see the changelog.

[nicoddemus]

@ColinKennedy if you are using the latest pip it should not try to install pytest-3.3.0 on Python 3.3. Make sure to update pip on Travis first with pip install --upgrade pip before installing your requirements.

[takluyver]

It looks like the metadata did not get published correctly when pytest 3.3.0 was uploaded. Compare py 1.5.2, which has 'Requires Python' metadata on the page, with pytest 3.3.0, which does not.

Unfortunately, this means that installing pytest fails on Python 3.3 rather than automatically falling back to an older version.

[RonnyPfannschmidt]

it seems the wheel metadata is incorrect

[takluyver]

Unfortunately, the only way I can think of to fix this is to make a new release of pytest which can be installed on Python 3.3, and has a version number higher than 3.3.0.

Otherwise, it might get fixed in pip if it gets a proper dependency resolver - that was a GSoC project this year, but I haven't heard much about it.

[nicoddemus]

I used the automatic procedure detailed in HOWTORELEASE to generate and upload the package, what could have caused the missing header? An old pip or wheel version installed in the virtual environment I used?

[RonnyPfannschmidt]

@nicoddemus pip cant cause it - wheel looked recent, perhaps setuptools?

[nicoddemus]

I will verify the actual versions when I get home to see if they were the cause.

[takluyver]

wheel, setuptools or maybe twine (if you're using that).

[nicoddemus]

Here's the pip list of the virtual environment I used:

Package             Version                         Location
------------------- ------------------------------- --------------------
apipkg              1.4
argon2-cffi         16.3.0
attrs               17.3.0
beautifulsoup4      4.6.0
bleach              2.0.0
certifi             2017.7.27.1
cffi                1.10.0
Chameleon           3.1
chardet             3.0.4
check-manifest      0.35
click               6.7
coverage            4.4.2
defusedxml          0.5.0
devpi               2.2.0
devpi-client        3.0.0
devpi-common        3.1.0
devpi-server        4.3.0
devpi-web           3.2.0
docutils            0.14
execnet             1.4.1
gitdb2              2.0.2
GitPython           2.1.5
html5lib            0.999999999
hupper              1.0
hypothesis          3.37.0
idna                2.5
incremental         17.5.0
invoke              0.20.4
itsdangerous        0.24
Jinja2              2.9.6
MarkupSafe          1.0
passlib             1.7.1
PasteDeploy         1.5.2
pip                 9.0.1
pkginfo             1.4.1
plaster             0.5
plaster-pastedeploy 0.4.1
pluggy              0.4.0
py                  1.5.0
pycparser           2.18
Pygments            2.2.0
pyramid             1.9.1
pyramid-chameleon   0.3
pytest              3.2.6.dev217+ge97c774.d20171123 /home/vagrant/pytest
readme-renderer     17.2
regendoc            0.6.1
repoze.lru          0.6
requests            2.18.3
requests-toolbelt   0.8.0
setuptools          36.2.7
six                 1.10.0
smmap2              2.0.3
toml                0.9.2
towncrier           17.8.0
tox                 2.8.1
tqdm                4.15.0
translationstring   1.3
twine               1.9.1
urllib3             1.22
venusian            1.1.0
virtualenv          15.1.0
waitress            1.0.2
webencodings        0.5.1
WebOb               1.7.3
wheel               0.29.0
Whoosh              2.7.4
zope.deprecation    4.3.0
zope.interface      4.4.2

Now with --outdated:

Package             Version                         Latest    Type  Location
------------------- ------------------------------- --------- ----- --------------------
bleach              2.0.0                           2.1.1     wheel
certifi             2017.7.27.1                     2017.11.5 wheel
cffi                1.10.0                          1.11.2    wheel
Chameleon           3.1                             3.2       sdist
check-manifest      0.35                            0.36      wheel
devpi-client        3.0.0                           3.1.0     wheel
devpi-common        3.1.0                           3.2.0     wheel
devpi-server        4.3.0                           4.3.1     wheel
devpi-web           3.2.0                           3.2.1     wheel
execnet             1.4.1                           1.5.0     wheel
gitdb2              2.0.2                           2.0.3     wheel
GitPython           2.1.5                           2.1.7     wheel
hypothesis          3.37.0                          3.38.9    wheel
idna                2.5                             2.6       wheel
invoke              0.20.4                          0.22.0    wheel
Jinja2              2.9.6                           2.10      wheel
plaster             0.5                             1.0       wheel
plaster-pastedeploy 0.4.1                           0.4.2     wheel
pluggy              0.4.0                           0.6.0     sdist
py                  1.5.0                           1.5.2     wheel
pytest              3.2.6.dev217+ge97c774.d20171123 3.3.0     wheel /home/vagrant/pytest
repoze.lru          0.6                             0.7       wheel
requests            2.18.3                          2.18.4    wheel
setuptools          36.2.7                          38.2.3    wheel
six                 1.10.0                          1.11.0    wheel
toml                0.9.2                           0.9.3.1   sdist
tox                 2.8.1                           2.9.1     wheel
tqdm                4.15.0                          4.19.4    wheel
waitress            1.0.2                           1.1.0     wheel
WebOb               1.7.3                           1.7.4     wheel
wheel               0.29.0                          0.30.0    wheel
zope.interface      4.4.2                           4.4.3     wheel

[takluyver]

Look at this file, I see that pytest releases are made through devpi. I've never used that; maybe it doesn't propagate the 'Requires-Python' metadata to PyPI.

[RonnyPfannschmidt]

@takluyver the metadata is taken from the wheel, and the wheel doesnt contain it