PyPy from shapely.geos import causes "TypeError: unsupported operand type(s) for +: 'list' and 'tuple'"

Expected behavior and actual behavior.

PyPy is able to import from shapely.geos.

Steps to reproduce the problem.

While running Travis tests on geoalchemy2.

__________________ ERROR collecting tests/test_comparator.py ___________________
tests/test_comparator.py:5: in <module>
    from geoalchemy2.types import Geometry
geoalchemy2/__init__.py:1: in <module>
    from .types import (  # NOQA
geoalchemy2/types.py:17: in <module>
    from .shape import to_shape
geoalchemy2/shape.py:10: in <module>
    import shapely.wkb
.tox/pypysqla11/site-packages/shapely/wkb.py:4: in <module>
    from shapely.geos import WKBReader, WKBWriter, lgeos
.tox/pypysqla11/site-packages/shapely/geos.py:224: in <module>
    new_func.argtypes = [c_void_p] + old_func.argtypes
E   TypeError: unsupported operand type(s) for +: 'list' and 'tuple'

https://travis-ci.org/github/geoalchemy/geoalchemy2/jobs/662462792#L760

I’ve tried PyPy and PyPy3.

Tests on Python 2.7, 3.{5,6,7,8} work fine.

Unfortunately I don’t have PyPy installed locally to test further.

https://github.com/Toblerity/Shapely/blob/d8ff5de8baee6bbbd8465c92197764cdaaa6395a/shapely/geos.py#L224

Can this be changed to new_func.argtypes = [c_void_p] + list(old_func.argtypes)

Not that I know if that would work, or quite why it was needed.

Operating system

Linux Ubuntu Xenial (Travis)

Shapely version and provenance

1.70 installed from PyPI using pip. https://files.pythonhosted.org/packages/44/ec/4eddbf9d17a917c51fb4ad159aa7137f506681e91ab559cf87d120e1d78d/Shapely-1.7.0.tar.gz

libgeos-3.7.1

[cjmayo]

Thanks for the quick update. I’ve tested geoalchemy2 with https://github.com/Toblerity/Shapely/archive/9ca22240d3272df9598c30878c6f8562e50f1ec8.tar.gz and it is passing all tests with PyPy and Python 2.7, 3.{5-8}.

[oppianmatt]

any chance on publishing this to pypi please?