Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

add support for python 3.6 #216

pingf opened this issue Jan 6, 2017 · 2 comments

add support for python 3.6 #216

pingf opened this issue Jan 6, 2017 · 2 comments


Copy link

pingf commented Jan 6, 2017

when I use pip install with python 3.6, it says,

Sorry, but pony 0.7 requires Python of one of the following versions: 2.7, 3.3, 3.4 and 3.5. You have version 3.6.0
Copy link


I installed pony with python3.6 (I never got the error that @pingf got, it just worked for me), however I think something in Python3.6 broke queries.

Using the following dummy test file:

#!/usr/bin/env python3.6

from pony import orm

db = orm.Database()

class Foo(db.Entity):
    name = orm.Required(str)

db.bind('sqlite', ':memory:')


with orm.db_session:

print( for _ in Foo))

With python3.5 the output is as expected (a Query object) however with python 3.6 the output is the following:

Traceback (most recent call last):
  File "./", line 17, in <module>
    print( for _ in Foo))
  File "<string>", line 2, in select
  File "/home/william/.local/lib/python3.6/site-packages/pony/utils/", line 58, in cut_traceback
    return func(*args, **kwargs)
  File "/home/william/.local/lib/python3.6/site-packages/pony/orm/", line 4930, in select
    return make_query(args, frame_depth=3)
  File "/home/william/.local/lib/python3.6/site-packages/pony/orm/", line 4917, in make_query
    tree, external_names, cells = decompile(gen)
  File "/home/william/.local/lib/python3.6/site-packages/pony/orm/", line 35, in decompile
    decompiler = Decompiler(codeobject)
  File "/home/william/.local/lib/python3.6/site-packages/pony/orm/", line 75, in __init__
  File "/home/william/.local/lib/python3.6/site-packages/pony/orm/", line 100, in decompile
    elif op in haslocal: arg = [code.co_varnames[oparg]]
IndexError: tuple index out of range

kozlovsky added a commit that referenced this issue Jan 10, 2017
# New features

* New warning DatabaseContainsIncorrectEmptyValue added, it is raised when the required attribute is empty during loading an entity from the database

# Bugfixes

* Fixes #216: Added Python 3.6 support
* Fixes #203: subtranslator should use argnames from parent translator
* Change a way aliases in SQL query are generated in order to fix a problem when a subquery alias masks a base query alias
* Volatile attribute bug fixed
* Fix creation of self-referenced foreign keys - before this Pony didn't create the foreign key for self-referenced attributes
* Bug fixed: when required attribute is empty the loading from the database shouldn't raise the validation error. Now Pony raises the warning DatabaseContainsIncorrectEmptyValue
* Throw an error with more clear explanation when a list comprehension is used inside a query instead of a generator expression: "Use generator expression (... for ... in ...) instead of list comprehension [... for ... in ...] inside query"
Copy link

Thanks for reporting, should be fixed now!

@kozlovsky kozlovsky added the bug label Jan 10, 2017
@kozlovsky kozlovsky added this to the 0.7.1 milestone Jan 10, 2017
@kozlovsky kozlovsky self-assigned this Jan 10, 2017
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
None yet

No branches or pull requests

3 participants