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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"NamedTuple with no fields causes `\"object\" not callable` error","articleBody":"``` python\nBlue = NamedTuple(\"Blue\", [])\n```\n\nFails with:\n\n``` python\nexample.py:5: error: \"object\" not callable\n```\n\nBut this code runs fine in python2/python3.\n\n**Edit**:  \nSeems like it's falling out to [here](https://github.com/python/mypy/blob/e308f2f786d432577286e0d84abaca505d02ec81/mypy/checkmember.py#L160)\na bit odd to me because NamedTuple does indeed have a `__call__` attribute\n\nInteresting. The following fails:\n\n``` python\nalist = [('afield', str)]\nGreen = NamedTuple(\"Green\", alist)\n\nexample.py:3: error: List literal expected as the second argument to namedtuple()\nexample.py:3: error: \"object\" not callable\n```\n\nBut this works:\n\n``` python\nGreen = NamedTuple(\"Green\", [('afields', str)])\n```\n\nI think the `type_map` is storing `NameExpr(NamedTuple [typing.NamedTuple])` as an `object`, and it looks like the in the latter case it's skipping a check . . . I remember reading in an issue that NamedTuple wasn't fully supported, so I assume that's what's going on.\n","author":{"url":"https://github.com/averagehat","@type":"Person","name":"averagehat"},"datePublished":"2016-03-06T17:29:28.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/1276/mypy/issues/1276"}