b47669403b
This commit: 1. Formats all of our existing code using `black`. 2. Adds a note about using `black` to `CONTRIBUTING.rst`. 3. Runs `black --check` as part of CI (failing builds that aren't properly formatted).
60 lines
1.8 KiB
Python
60 lines
1.8 KiB
Python
__all__ = (
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"pre_init",
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"post_init",
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"pre_save",
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"pre_save_post_validation",
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"post_save",
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"pre_delete",
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"post_delete",
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)
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signals_available = False
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try:
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from blinker import Namespace
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signals_available = True
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except ImportError:
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class Namespace(object):
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def signal(self, name, doc=None):
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return _FakeSignal(name, doc)
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class _FakeSignal(object):
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"""If blinker is unavailable, create a fake class with the same
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interface that allows sending of signals but will fail with an
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error on anything else. Instead of doing anything on send, it
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will just ignore the arguments and do nothing instead.
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"""
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def __init__(self, name, doc=None):
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self.name = name
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self.__doc__ = doc
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def _fail(self, *args, **kwargs):
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raise RuntimeError(
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"signalling support is unavailable "
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"because the blinker library is "
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"not installed."
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)
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send = lambda *a, **kw: None # noqa
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connect = (
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disconnect
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) = has_receivers_for = receivers_for = temporarily_connected_to = _fail
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del _fail
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# the namespace for code signals. If you are not mongoengine code, do
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# not put signals in here. Create your own namespace instead.
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_signals = Namespace()
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pre_init = _signals.signal("pre_init")
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post_init = _signals.signal("post_init")
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pre_save = _signals.signal("pre_save")
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pre_save_post_validation = _signals.signal("pre_save_post_validation")
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post_save = _signals.signal("post_save")
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pre_delete = _signals.signal("pre_delete")
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post_delete = _signals.signal("post_delete")
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pre_bulk_insert = _signals.signal("pre_bulk_insert")
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post_bulk_insert = _signals.signal("post_bulk_insert")
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