Finish processing dependencies for mmfashion but get the message : No module named 'mmfashion'

Hi I'm using the MMfashion.
I got the error message : No module named 'mmfashion' I found the solution on mmfashion official github is that
'Please make sure you used python3 and implemented "python setup.py install". '
I sured that I used python3 and implemented "python setup.py install".
After I implemented "python setup.py install", I get the message 'Finish processing dependencies for mmfashion==0.4.0'.
I think that mean I can successfully use the module 'mmfashion', I should not get the error message : No module named 'mmfashion' right? If you know any solution or anything that is helpful, please write the comment and let me know. Thank you so much!