即使我使用 Python 工作这么久，我仍然偶尔会遇到包结构的问题。
我正在尝试跑步$ pipenv run pytest从下面的目录结构的根（即..上面 src/)
src/
physics/
__init__.py
pathing.py
road/
tests/
__init__.py
test_traffic.py
__init__.py
traffic.py
__init__.py
main.py
交通.py:
from physics import pathing
class Intersection():
...
class Vehicle():
...
测试流量.py
from src.road.traffic import Intersection, Vehicle
def test_intersection():
...
然而，我受到以下打击：
======================================================================= ERRORS ========================================================================
___________________________________________________ ERROR collecting src/road/tests/test_traffic.py ___________________________________________________
ImportError while importing test module '/Users/justian/scripts/py-traffic-sim/src/road/tests/test_traffic.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
src/road/tests/test_traffic.py:1: in <module>
from src.road.traffic import Intersection, Vehicle
src/road/traffic.py:13: in <module>
from physics import pathing
E ModuleNotFoundError: No module named 'physics'
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
================================================================== 1 error in 0.38s ===================================================================
看起来我误解了 pytest 如何导入我的模块，或者误解了我的模块如何相互引用。两个都$ pipenv run pytest and $ pipenv run python -m pytest产生相同的结果。
我怎样才能正确导入Intersection and Vehicle进入 test_traffic.py？
去除__init__.py文件来自src.
e.g.
src/
physics/
__init__.py
pathing.py
road/
tests/
__init__.py
test_traffic.py
__init__.py
traffic.py
__init__.py # Remove this one
main.py
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