ImportError undefined symbol: _Py_Dealloc

[initbar]

Hello ~ I'm trying to learn the interface between Rust and Python - but I can't find the solution as to why I can't seem to import my compiled library (even using the code from the rust example).

The below build is from blaze:

If there are any pointers (or a section in a documentation) where I can read and try to figure out the answer, I would appreciate the help 😃

[initbar]

@dgrunwald I've read the comment in issue #87, and realized that cargo was building against the Python 3 libraries. In that case, is it possible to provide flags to cargo build in such ways that both Python 2.7+ and Python 3.+ are supported?

[initbar]

Figured it out ~

[dependencies.cpython]
version = "0.1"

# Python 2.7
default-features = false
features = ["extension-module-2-7", "python27-sys"]

# Python 3+
# features = "extension-module"

[ssokolow]

You could also plumb those into a feature in your own package so building for Python 2.x would be as simple as cargo build --no-default-features --features py27

[alantrick]

It might be good to mention this in the readme. I ran into this issue as well, and it was a little confusing.