Doctest和相对进口

Question

我在使用doctest和相对导入时遇到了麻烦.简单的解决方案就是摆脱相对进口.还有其他人吗？

假设我有一个名为example的包,包含2个文件:

example/__init__.py

"""
This package is entirely useless.
>>> arnold = Aardvark()
>>> arnold.talk()
I am an aardvark.
"""

from .A import Aardvark

if __name__ == "__main__":
    import doctest
    doctest.testmod()

例如/ A.py

class Aardvark(object):
    def talk(self):
        print("I am an aardvark.")

如果我现在尝试

python example/__init__.py

然后我得到了错误

Traceback (most recent call last):
  File "example/__init__.py", line 8, in <module>
    from .A import Aardvark
ValueError: Attempted relative import in non-package

Answer 1

创建另一个文件my_doctest_runner.py:

if __name__ == "__main__":
    import doctest
    import example
    doctest.testmod(example)

执行my_doctest_runner.py以在example/__init__.py以下位置运行doctests :

$ python2.7 my_doctest_runner.py
**********************************************************************
File "/tmp/example/__init__.py", line 4, in example
Failed example:
    arnold.talk()
Expected:
    I am an aaardvark.
Got:
    I am an aardvark.
**********************************************************************
1 items had failures:
   1 of   2 in example
***Test Failed*** 1 failures.