feat: improved support of python3

[knst]

With modern python the setup process by an old instruction will trigger a warning:
setup.py:1: DeprecationWarning: The distutils package is deprecated and slated for removal in Python 3.12. Use setuptools or check PEP 632 for potential alternatives

To avoid this (and other related warnings) were updated:

• package distutils.core replaced by modern setuptools
• updated README.txt to use PIP instead call setup.py directly
• used python3 in README.txt instead python

That gives 2 extra features beside rid of warnings:

• you can easily install dash_hash package without root permission on host
• you can uninstall package now by pip3/python-pip easily

[UdjinM6]

ACK

[PastaPastaPasta]

utACK for squash merge; strong concept ack :) @thephez some docs will need updating

[thephez]

@PastaPastaPasta This is the only reference I see in the dash repository: https://github.com/dashpay/dash/tree/master/test#dependencies-and-prerequisites. If you're aware of others, please share.

[knst]

          @PastaPastaPasta This is the only reference I see in the dash repository: https://github.com/dashpay/dash/tree/master/test#dependencies-and-prerequisites. If you're aware of others, please share.

Originally posted by @thephez in #17 (comment)

I'll prepare PR for that repo too

[thephez]

I'll prepare PR for that repo too

@knst You can build off dashpay/dash#5291 if more changes are needed

[thephez]

Hmm, this is going to break too? https://github.com/dashpay/dash/blob/develop/contrib/containers/ci/Dockerfile#L47

[UdjinM6]

since this is a breaking change it might make sense to bump version too (1.3.3 or 1.4)

[knst]

As I just tested, upgrade from version 1.3.2 also works:

$ python3 setup.py install --user # option --user let to install in local directory by old script
$ git checkout 542f1e8
$ pip3 install . 
Defaulting to user installation because normal site-packages is not writeable
Processing /home/knst/projects/dash_hash
  Preparing metadata (setup.py) ... done
Building wheels for collected packages: dash-hash
  Building wheel for dash-hash (setup.py) ... done
  Created wheel for dash-hash: filename=dash_hash-1.4.0-cp310-cp310-linux_x86_64.whl size=573319 sha256=fb62b31b36b1bc71ef5e3f5e80ce53914af0b37b3e2365f5f4c1b8f97a626a88
  Stored in directory: /tmp/pip-ephem-wheel-cache-4q8v7fy2/wheels/10/42/16/3ed762cc124a59a29e5d839114a062f290c78c91142e1b6ba5
Successfully built dash-hash
Installing collected packages: dash-hash
  Attempting uninstall: dash-hash
    Found existing installation: dash-hash 1.3.2
    Uninstalling dash-hash-1.3.2:
      Successfully uninstalled dash-hash-1.3.2
Successfully installed dash-hash-1.4.0

[UdjinM6]

👍

utACK