struggling with Timer objects in python

Question

again i am struggling with something although it might be a little simpler to fix unlike the binary arrays with my last post. Basically, I created a timer object with a function name. Yet, I keep getting a problem because it says that the function that i call is not defined under Name Error.

class DrawBot():
    waitingt = Timer(30.0, lockmap)
    ...
    def onlockmap(self, user):
        self.onBackup(user, "lockmapbackup")
        waitingt.start()

    def lockmap():
        onrestoremap("lockmapbackup")


NameError: name 'lockmap' is not defined

Blender · Accepted Answer · 2011-04-10 00:15:15Z

2

lockmap() is part of DrawBot(), so if you were to call it by itself, you'd get a NameError.

Try calling it by using self, which references the class:

waitingt = Timer(30.0, self.lockmap)

answered Apr 10, 2011 at 0:15

Blender

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2 Comments

Keith Over a year ago

self references the instance, but the lookup algorithm would also search the class if the instance doesn't have the name. This really should have an instance of Timer for class instance, not a class level instance.

Blender Over a year ago

Ah, thanks. I've never seen the Timer class, so I just thought that it was a generic error...

Amber · Accepted Answer · 2011-04-10 00:50:32Z

2

Because it's not defined until you get to the actual definition. Plus, you probably don't want to have a single timer shared across every instance of the class... try this instead:

class DrawBot():
    def __init__(self):
        self.waitingt = Timer(30.0, self.lockmap)
    ...
    def onlockmap(self, user):
        self.onBackup(user, "lockmapbackup")
        self.waitingt.start()

    def lockmap(self):
        onrestoremap("lockmapbackup")

edited Apr 10, 2011 at 0:50

answered Apr 10, 2011 at 0:15

Amber

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1 Comment

Keith Over a year ago

I think you need to use self.lockmap here.

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