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Fix callbackregistry docstring. #9687

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Merged
merged 1 commit into from
Nov 5, 2017
Merged

Fix callbackregistry docstring. #9687

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Fix callbackregistry docstring. 
Note in particular `**args` (typo) -> `*args`.
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@anntzer
anntzer committed Nov 4, 2017
commit 440e4648b3a474c4b2c0d15c44c1c4440449e552
16 changes: 7 additions & 9 deletions 16 lib/matplotlib/cbook/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -255,8 +255,7 @@ def _exception_printer(exc):


class CallbackRegistry(object):
"""Handle registering and disconnecting for a set of signals and
callbacks:
"""Handle registering and disconnecting for a set of signals and callbacks:

>>> def oneat(x):
... print('eat', x)
Expand Down Expand Up @@ -332,9 +331,7 @@ def __setstate__(self, state):
self.__init__(**state)

def connect(self, s, func):
"""
register *func* to be called when a signal *s* is generated
func will be called
"""Register *func* to be called when signal *s* is generated.
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It's not obvious to me what the signal s is here, or even what type it should have

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It can indeed be anything (hashable):

In [1]: from matplotlib.cbook import CallbackRegistry; cbr = CallbackRegistry()

In [2]: s = object()

In [3]: cbr.connect(s, print)
Out[3]: 1

In [4]: cbr.process(s, "hello world")
hello world

"""
self._func_cid_map.setdefault(s, WeakKeyDictionary())
# Note proxy not needed in python 3.
Expand Down Expand Up @@ -363,8 +360,7 @@ def _remove_proxy(self, proxy):
del self._func_cid_map[signal]

def disconnect(self, cid):
"""
disconnect the callback registered with callback id *cid*
"""Disconnect the callback registered with callback id *cid*.
"""
for eventname, callbackd in list(six.iteritems(self.callbacks)):
try:
Expand All @@ -381,8 +377,10 @@ def disconnect(self, cid):

def process(self, s, *args, **kwargs):
"""
process signal `s`. All of the functions registered to receive
callbacks on `s` will be called with ``**args`` and ``**kwargs``
Process signal *s*.
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Again, I'm not sure what s should be here


All of the functions registered to receive callbacks on *s* will be
called with ``*args`` and ``**kwargs``.
"""
if s in self.callbacks:
for cid, proxy in list(six.iteritems(self.callbacks[s])):
Expand Down
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