Python2 support

[naweiss]

hashes.py uses hashlib.algorithms_guaranteed:

pwntools/pwnlib/util/hashes.py

Line 8 in 26ccb97

for _algo in hashlib.algorithms_guaranteed:

According to python documentation algorithms_guaranteed exists from version 2.7.9 and up.

But i don't knonw if Python2 support will be dropped soon for pwntools.
So, for now setup.py should probably specify python_requires = '>=2.7.9'.

Edit: It worth mantioning I needed pwntools on a Python 2.7.6 machine so, if Python2 support is important, somthing like:
hashlib.algorithms_guaranteed or hashlib.algorithms
Would probably be batter.

[Arusekk]

By 'python 2.7 is supported' we actually mean 'the newest python 2.7 is supported'; so we don't e.g. support 2.6 while some features might probably work well. You shouldn't ever explicitly need to run pwntools exploits on the machines being pwned. You can just run an exploit locally, and connect to that host through an ssh tube. Or you can just edit the offending pwntools file on the machine. You can also probably upgrade python standard library files to 2.7.9 if not the whole python installation; if you can install fully featured pwntools (which depends on several compiled packages), upgrading python should not be a problem. Or if you cannot access the python installation, you can install a portable version of python (try 3.x then, it is way more type-consistent) or compile it yourself. Should be as easy as git clone git://github.com/python/cpython; cd cpython; ./configure --prefix=$HOME/.local; make; make install and adding ~/.local/bin to PATH (which is probably already there). If you can write to /usr/local/bin and stuff, just do a ./configure without prefix. You can also always read ./configure --help and disable a few features to save some compilation time if that's a problem.

Closing as a WONTFIX, I guess other developers agree with me that supporting ancient pythons would hold us back. But no, not dropping python 2 at least until someone finally says aloud that jython 3 is preferred over jython 2 (and/or ironpython slash some other implementations). Some want to integrate exploits with ghidra, which still uses py2 by some freaking chance.