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add Terminator class

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Furkan Önder 2020-05-04 00:28:40 +03:00 committed by GitHub
parent 400686764f
commit f2e9f057ab
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1 changed files with 9 additions and 0 deletions
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9
Lib/turtle.py
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@ -854,6 +854,13 @@ class TurtleScreenBase(object):
##############################################################################
class Terminator (Exception):
"""Will be raised in TurtleScreen.update, if _RUNNING becomes False.
This stops execution of a turtle graphics script.
Main purpose: use in the Demo-Viewer turtle.Demo.py.
"""
pass
class TurtleGraphicsError(Exception):
@ -3936,12 +3943,14 @@ def {name}{paramslist}:
if {obj} is None:
if not TurtleScreen._RUNNING:
TurtleScreen._RUNNING = True
raise Terminator
{obj} = {init}
try:
return {obj}.{name}{argslist}
except TK.TclError:
if not TurtleScreen._RUNNING:
TurtleScreen._RUNNING = True
raise Terminator
raise
"""