diff options
Diffstat (limited to 'Lib/tkinter/__init__.py')
| -rw-r--r-- | Lib/tkinter/__init__.py | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/Lib/tkinter/__init__.py b/Lib/tkinter/__init__.py index deea791..53bad3f 100644 --- a/Lib/tkinter/__init__.py +++ b/Lib/tkinter/__init__.py @@ -739,6 +739,7 @@ class Misc: if not func: # I'd rather use time.sleep(ms*0.001) self.tk.call('after', ms) + return None else: def callit(): try: @@ -762,11 +763,13 @@ class Misc: """Cancel scheduling of function identified with ID. Identifier returned by after or after_idle must be - given as first parameter.""" + given as first parameter. + """ + if not id: + raise ValueError('id must be a valid identifier returned from ' + 'after or after_idle') try: data = self.tk.call('after', 'info', id) - # In Tk 8.3, splitlist returns: (script, type) - # In Tk 8.4, splitlist may return (script, type) or (script,) script = self.tk.splitlist(data)[0] self.deletecommand(script) except TclError: |