python鼻子测试错误导入模块

Question

I'm trying to test one class that imports another class that I've written, but I receive an error when I run nosetest.

my package file structure is something like this:

./__init__.py
./classA.py
./classB.py
./tests
    ./__init__.py
    ./testClassA.py

Where classA.py imports B like:

from classB import B

class A:
    def __init__(self):
       self.b=B() 
       ...

When I run nosetest, testClassA.py the tries to import A, it throws an error message.

testClassA.py has an import statement like this:

from ..classA import A

and the error message I receive is like this:

ImportError: no module named 'classB'

Answer 1

You might prefer using imports with the complete package inner path in the modules inside your package, like this:

from mypackage.classA import A

only inconvenience is if you have lots of imports and then later change your mind about the package name, you'll have to replace it in every file.