Python 3.3 bin/test --no-subprocess says hash randomization is off #7184

[SaiHarsh]

Currently, ./bin/test --no-subprocess in the python3 hash seed is off instead of on, this fixes the issue.

[asmeurer]

This sets the environment variable, but it won't be what is actually used, since Python is already started.

[SaiHarsh]

@asmeurer It means I need to set the environment variable before python gets invoke, could you suggest me what I need to read to solve this problem, is it related to the python subprocess.

[SaiHarsh]

@asmeurer I feel line 98 is the correct place to set the PYTHONHASHSEED value as environment variable SYMPY_USE_CACHE and SYMPY_GROUND_TYPES is set.
Correct me if I am wrong.

[asmeurer]

The subprocess is the way it is set before Python gets invoked. With --no-subprocess, hash randomization is still enabled (for Python 3.3+), but you don't know the seed, so it should just say hash randomization: on (seed unknown) or something to that effect.

[asmeurer]

Also, use a branch other than master, so that you don't mix unrelated changes. You should never commit to the master branch.

[czgdp1807]

ping @SaiHarsh @asmeurer Please provide your updates on this PR.

[czgdp1807]

I tested this PR on my system, it is producing the following error,

python3 ./bin/test --no-subprocess 
Traceback (most recent call last):
  File "./bin/test", line 101, in <module>
    import sympy
  File "/home/gagandeep/sympy/sympy/__init__.py", line 60, in <module>
    from .polys import *
  File "/home/gagandeep/sympy/sympy/polys/__init__.py", line 5, in <module>
    from . import polytools
  File "/home/gagandeep/sympy/sympy/polys/polytools.py", line 54, in <module>
    from sympy.polys.domains import FF, QQ, ZZ
  File "/home/gagandeep/sympy/sympy/polys/domains/__init__.py", line 9, in <module>
    from . import finitefield
  File "/home/gagandeep/sympy/sympy/polys/domains/finitefield.py", line 7, in <module>
    from sympy.polys.domains.groundtypes import SymPyInteger
  File "/home/gagandeep/sympy/sympy/polys/domains/groundtypes.py", line 13, in <module>
    from .pythonrational import PythonRational
  File "/home/gagandeep/sympy/sympy/polys/domains/pythonrational.py", line 13, in <module>
    from sympy.printing.defaults import DefaultPrinting
  File "/home/gagandeep/sympy/sympy/printing/__init__.py", line 3, in <module>
    from .pretty import pager_print, pretty, pretty_print, pprint, \
  File "/home/gagandeep/sympy/sympy/printing/pretty/__init__.py", line 3, in <module>
    from .pretty import (pretty, pretty_print, pprint, pprint_use_unicode,
  File "/home/gagandeep/sympy/sympy/printing/pretty/pretty.py", line 26, in <module>
    from .pretty_symbology import xstr, hobj, vobj, xobj, xsym, pretty_symbol, \
ImportError: cannot import name unicode_strings

[czgdp1807]

Closing this PR due to inactivity and unavailability of sufficient reviews. Thanks for the contributions. Feel free to re-open it or request in the comments to do so.