[python-tulip] BaseEventLoop.remove_{reader,writer}: no callback argument?

[Nikolaus Rath]

Hello,

I am confused by the fact that the BaseEventLoop.remove_{reader,writer}
methods only take an *fd* argument. If I'm writing a library, and the fd
originates outside of my control, how can I prevent to accidentally
remove the wrong callback, and prevent my callback from being removed by
other code?

Best,
Nikolaus

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