我正在使用Python编写一个包.我用virtualenv.我在virtualenv中的.pth路径中设置了模块根目录的路径,这样我就可以在开发代码的同时导入包的模块并进行测试(问题1：这是一个好方法吗？).这工作正常(这是一个例子,这是我想要的行为)：

(VEnvTestRc) zz@zz:~/Desktop/GitFolders/rc$python

Python 2.7.12 (default, Jul 1 2016, 15:12:24)

[GCC 5.4.0 20160609] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>> from rc import ns

>>> exit()

(VEnvTestRc) zz@zz:~/Desktop/GitFolders/rc$python tests/test_ns.py

issued command: echo hello

command output: hello

但是,如果我尝试使用PyTest,我会收到一些导入错误消息：

(VEnvTestRc) zz@zz:~/Desktop/GitFolders/rc$pytest

=========================================== test session starts ============================================

platform linux2 -- Python 2.7.12, pytest-3.0.5, py-1.4.31, pluggy-0.4.0

rootdir: /home/zz/Desktop/GitFolders/rc, inifile:

collected 0 items / 1 errors

================================================== ERRORS ==================================================

________________________________ ERROR collecting tests/test_ns.py ________________________________

ImportError while importing test module '/home/zz/Desktop/GitFolders/rc/tests/test_ns.py'.

Hint: make sure your test modules/packages have valid Python names.

Traceback:

tests/test_ns.py:2: in

from rc import ns

E ImportError: cannot import name ns

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 1 errors during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

========================================= 1 error in 0.09 seconds ==========================================

(VEnvTestRc) zz@zz:~/Desktop/GitFolders/rc$which pytest

/home/zz/Desktop/VirtualEnvs/VEnvTestRc/bin/pytest

我有点困惑,看起来这表示导入错误,但Python做得很好,为什么PyTest特别存在问题？对原因/补救措施的任何建议(问题2)？我用谷歌搜索并堆叠溢出了PyTest的’ImportError：无法导入’错误,但是我得到的命中与缺少python路径和补救相关,这似乎不是问题.有什么建议么？