Update to Python 3

[Mikerah]

I noticed while trying to install oyente that it only seems to work for Python 2 which has been deprecated for a few years. Would it be possible to update the code for oyente to work in a Python 3 environment?

[yxliang01]

The master branch Oyente can run under Python 3 without issue. Although you can see Python 2 syntax, but they are translated when running under Python 3. Can you paste the exact installation steps and error message you saw? I recommend you to build a docker image that is the easiest way to get Oyente working.

[eerkaijun]

@yxliang01 I've also encountered this error. When I pip install oyente, there's this error code:

Collecting oyente
  Downloading oyente-0.2.7.tar.gz (35 kB)
    ERROR: Command errored out with exit status 1:
     command: /home/kaijun/Documents/oyente-evaluation/env/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-ze2h3ys5/oyente/setup.py'"'"'; __file__='"'"'/tmp/pip-install-ze2h3ys5/oyente/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-60efm66y
         cwd: /tmp/pip-install-ze2h3ys5/oyente/
    Complete output (5 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-ze2h3ys5/oyente/setup.py", line 10, in <module>
        long_description=open('README.md').read(),
    FileNotFoundError: [Errno 2] No such file or directory: 'README.md'
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

[yxliang01]

The version on Pypi (installed by pip) is very outdated. You should install from this GitHub Repo and it has been working fine for me and my team members.

[strawberrylady99]

I hava the same problem,how can I solve it

[wuhongjun15]

I can't install web3 by using python2, but the other dependencies need python2 rather than python3. What should I do?

[Troublor]

@yxliang01 When installing from this Repo under python 3.7, the installation works fine, but running oyente shows the following error:

> oyente --help
Traceback (most recent call last):
  File "/home/troublor/workspace/oyente/python3.7/bin/oyente", line 5, in <module>
    from oyente.oyente import main
  File "/home/troublor/workspace/oyente/python3.7/lib/python3.7/site-packages/oyente/oyente.py", line 63
    print "======= error ======="
                                ^
SyntaxError: Missing parentheses in call to 'print'. Did you mean print("======= error =======")?

[mrx23dot]

The bottleneck is z3 dependence on python2, use docker