AssertionErrors

[BT]

Hi all,

I often get AssertionErrors (assert(rule not in self.rulectx) in _apply_rule in lang.py) that interfere and I don't want why.

I have this problem in 1.4.0, but had the same experience in 1.3.0.

There is a widget called Vessel:

vessel.kv:

#:kivy 1.0

<Vessel>:

    canvas:

        Rectangle:

            source: [an image]

            pos: self.pos

            size: self.size

vessel.py:

from kivy.properties import StringProperty, NumericProperty, BooleanProperty, ObjectProperty

from kivy.lang import Builder

from kivy.uix.widget import Widget

Builder.load_file('widgets/vessel.kv')

class Vessel(Widget):

    maneuverindicator = NumericProperty(0, allownone=True)

    ....

    raimflag = BooleanProperty(False, allownone=True)

When the code breaks on assert(rule not in self.rulectx), then

rule is <ParserRule name='<Vessel>'>

and self.rulectx is {<ParserRule name='<Vessel>'>: {'hdl': [], 'set': [], 'ids': {'root': <widgets.vessel.Vessel object at 0x116900ba8>}}}

Is there anyone that knows what could be problem here? What could I verify to find more about this issue?

Thanks in advance,

Benny

[B. Jack]

You might need to add:

from kivy.factory import Factory

Factory.register('Vessel',cls=Vessel)

---

Date: Mon, 3 Sep 2012 12:23:47 -0700
From: benny...@skynet.be
To: kivy-...@googlegroups.com
Subject: [kivy-users] AssertionErrors

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[BT]

I was creating widgets on a background thread, which I added to a widget on the UI thread.

That was a bad idea.

I have changed my implementation and problems were solved.

Obviously ...