Build dynamic bazel target

Question

I would like to build a dynamic target list for my py_binary.

Actually : BUILD.bazel

py_binary(
    name = "launch",
    srcs = glob(*.py)
)

Supposed : BUILD.bazel

load("deps.bzl", "generate_target")

py_binary(
    name = "launch",
    srcs = glob(*.py)
    data = generate_target()    
)

Supposed deps.bzl:

def generate_target():
     # TODO

I got a script python which return my target list just like "["//:target0", "//:target1"...]", depends on config. Generate_target function, have to use my script python to generate the target list, and return it. But I don't know how can I do.

I try to use a native.genrule, native.py_binary or ctx.actions.run inside generate_target(), but I can't collect my target list.

Someone got an idea ?

Thanks