这是一个已知问题: https://github.com/pybuilder/pybuilder/issues/13 .

我最终使用了 pytest-pythonpath .这是我的build.py的相关部分:

I ended up using pytest-pythonpath. Here is the relevant part of my build.py :

from pybuilder.core import init, use_plugin

use_plugin("exec")
use_plugin("python.core")
use_plugin("python.unittest")

@init
def initialize(project):
    project.set_property("run_unit_tests_command", "py.test %s" % project.expand_path("$dir_source_unittest_python"))
    project.set_property("run_unit_tests_propagate_stdout", True)
    project.set_property("run_unit_tests_propagate_stderr", True)

这是我的pytest.ini:

[pytest]
python_paths = src/main/python

现在它可以完美运行:

$ pyb run_unit_tests