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bpo-15303: Support widgets with boolean value False in Tkinter (GH-23904)

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Use `widget is None` instead of checking the boolean value of a widget.
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Serhiy Storchaka 2020-12-25 17:04:26 +02:00 • committed by GitHub
parent 954a7427ba
commit bb70b2afe3
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8 changed files with 30 additions and 29 deletions
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6
Lib/tkinter/tix.py
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@ -386,7 +386,7 @@ class TixWidget(tkinter.Widget):
self.tk.call(name, 'configure', '-' + option, value)
# These are missing from Tkinter
def image_create(self, imgtype, cnf={}, master=None, **kw):
if not master:
if master is None:
master = self
if kw and cnf: cnf = _cnfmerge((cnf, kw))
elif kw: cnf = kw
@ -467,7 +467,7 @@ class DisplayStyle:
(multiple) Display Items"""
def __init__(self, itemtype, cnf={}, *, master=None, **kw):
if not master:
if master is None:
if 'refwindow' in kw:
master = kw['refwindow']
elif 'refwindow' in cnf:
@ -862,7 +862,7 @@ class HList(TixWidget, XView, YView):
return self.tk.call(self._w, 'add', entry, *self._options(cnf, kw))
def add_child(self, parent=None, cnf={}, **kw):
if not parent:
if parent is None:
parent = ''
return self.tk.call(
self._w, 'addchild', parent, *self._options(cnf, kw))