[issue38934] Dictionaries of dictionaries behave incorrectly when created from dict.fromkeys()

[Josh Rosenberg]

Josh Rosenberg <shadowranger+python at gmail.com> added the comment:

That's the expected behavior, and it's clearly documented here: https://docs.python.org/3/library/stdtypes.html#dict.fromkeys

Quote: "All of the values refer to just a single instance, so it generally doesn’t make sense for value to be a mutable object such as an empty list. To get distinct values, use a dict comprehension instead."

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nosy: +josh.r
resolution:  -> not a bug
stage:  -> resolved
status: open -> closed

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<https://bugs.python.org/issue38934>
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