I once worked under someone who felt strongly about us importing modules instead of classes. So instead of

    from sklearn.feature_extraction.text import TfidfVectorizer
    tfidf = TfidfVectorizer()

we were told to change it to

    from sklearn.feature_extraction import text
    tfidf = text.TfidfVectorizer()

to be compliant. Guess what variable name everyone used to store document text in every file.

Until this article, I always blamed this on the decision to blindly import modules instead of... well... whatever makes sense. Now I'm realizing if we all avoid common names for packages then this whole class of issue goes away.