Wheel files : What is the meaning of “none-any” in protobuf-3.4.0-py2.py3-none-any.whl

I used pip to get .whl file for numpy

pip wheel --wheel-dir=./ numpy

and I have got numpy-1.13.3-cp27-cp27mu-linux_armv7l.whl because I am using ARM platform, but when run pip for protobuf

pip wheel --wheel-dir=./ protobuf

I got protobuf-3.4.0-py2.py3-none-any.whl

So, why isn't linux_armv7l like the case of numpy, I didn't alter the machine and searched for that difference but no information.

thanks for advice .

Let's split package names by components:

numpy — package name
1.13.3 — package version
cp27 — the package was compiled to be used with this version of Python
cp27mu — compilation flags
linux — operating system
armv7l — processor architecture

This means that package numpy contains binary extensions written in C and compiled for specific processor, OS and Python version.

The following package is pure Python:

protobuf — name
3.4.0 — version
py2.py3 — the package is written in highly portable manner and is suitable for both major versions of Python
none — is not OS-specific
any — suitable to run on any processor architecture

The wheel filename is {distribution}-{version}(-{build tag})?-{python tag}-{abi tag}-{platform tag}.whl.

distribution

Distribution name, e.g. 'django', 'pyramid'.

version

Distribution version, e.g. 1.0.

build tag

Optional build number. Must start with a digit. A tie breaker if two wheels have the same version. Sort as the empty string if unspecified, else sort the initial digits as a number, and the remainder lexicographically.