Python 3 support?

[joshburkart]

Here's my BUILD file:

py_library(
    name="basis",
    srcs=["basis.py"],
    srcs_version="PY3ONLY",
)

py_test(
    name="basis_test",
    srcs=["basis_test.py"],
    deps=[
        ":basis",
    ],
    srcs_version="PY3ONLY",
)

Unfortunately, when I execute bazel test basis_test, I get

ERROR: /blah/BUILD:7:1: in py_test rule //blah:basis_test: Rule '//blah:basis_test' can only be used with Python 3, and cannot be converted to Python 2.
ERROR: Analysis of target '//blah:basis_test' failed; build aborted.
INFO: Elapsed time: 1.560s
ERROR: Couldn't start the build. Unable to run tests.

Is there an easy workaround? I have Python 3 installed and all. Thanks!

[hermione521]

Sorry, we don't have Python 3 support yet. @lberki do we have any workaround?

[lberki]

Does adding --force_python=PY3 to the command line of Bazel work?

[bsilver8192]

I've been having success with default_python_version = "PY3", on each rule too (in addition to srcs_version).

I think --force_python=PY3 --host_force_python=PY3 should work without needing to set two attributes on each rule, but I haven't actually gotten around to trying it.

[joshburkart]

Thanks for the responses! Working great now. Just needed to set srcs_version = "PY3" on everything, and default_python_version = "PY3" only on tests and binaries.

[lc0]

Seems like force_python=py2 was removed tensorflow/serving@5369880#diff-4c3a4e61471476647ad1c0987a744414L4

Does it mean you officially support python 3?