An example, the file-name is conflict with library-name in stdlib or installed library.

There is a file uuid.py that only has two lines:

    import uuid
    print(uuid.uuid4())

Run uuid.py, output on Python 3.5.1:

    Traceback (most recent call last):
      File "D:\uuid.py", line 1, in <module>
        import uuid
      File "D:\uuid.py", line 3, in <module>
        print(uuid.uuid4())
    AttributeError: module 'uuid' has no attribute 'uuid4'

I was spending about an hour to find out what happend when I was a beginner, and I found I'm not the only one who confused by this problem.

If the prompt can be beginner-friendly a little bit, I think it's a very good thing. E.g. says you are importing the file itself, rather than importing other file or library.
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