[New-bugs-announce] [issue20067] Tkinter variables no works with wantobject is false

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

Tkinter variables test fails when wantobjects is false:

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ERROR: test_default (__main__.TestVariable)
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Traceback (most recent call last):
  File "Lib/tkinter/test/test_tkinter/test_variables.py", line 29, in test_default
    self.assertEqual("", v.get())
  File "/home/serhiy/py/cpython/Lib/tkinter/__init__.py", line 239, in get
    return self._tk.globalgetvar(self._name)
_tkinter.TclError: can't read "PY_VAR0": no such variable

======================================================================
ERROR: test_default (__main__.TestStringVar)
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Traceback (most recent call last):
  File "Lib/tkinter/test/test_tkinter/test_variables.py", line 79, in test_default
    self.assertEqual("", v.get())
  File "/home/serhiy/py/cpython/Lib/tkinter/__init__.py", line 291, in get
    value = self._tk.globalgetvar(self._name)
_tkinter.TclError: can't read "PY_VAR2": no such variable

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ERROR: test_default (__main__.TestIntVar)
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Traceback (most recent call last):
  File "Lib/tkinter/test/test_tkinter/test_variables.py", line 92, in test_default
    self.assertEqual(0, v.get())
  File "/home/serhiy/py/cpython/Lib/tkinter/__init__.py", line 313, in get
    return getint(self._tk.globalgetvar(self._name))
_tkinter.TclError: can't read "PY_VAR3": no such variable

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ERROR: test_default (__main__.TestDoubleVar)
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Traceback (most recent call last):
  File "Lib/tkinter/test/test_tkinter/test_variables.py", line 114, in test_default
    self.assertEqual(0.0, v.get())
  File "/home/serhiy/py/cpython/Lib/tkinter/__init__.py", line 332, in get
    return getdouble(self._tk.globalgetvar(self._name))
_tkinter.TclError: can't read "PY_VAR4": no such variable

======================================================================
ERROR: test_default (__main__.TestBooleanVar)
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Traceback (most recent call last):
  File "/home/serhiy/py/cpython/Lib/tkinter/__init__.py", line 352, in get
    return self._tk.getboolean(self._tk.globalgetvar(self._name))
_tkinter.TclError: can't read "PY_VAR5": no such variable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "Lib/tkinter/test/test_tkinter/test_variables.py", line 141, in test_default
    self.assertEqual(False, v.get())
  File "/home/serhiy/py/cpython/Lib/tkinter/__init__.py", line 354, in get
    raise ValueError("invalid literal for getboolean()")
ValueError: invalid literal for getboolean()

======================================================================
FAIL: test___del__ (__main__.TestVariable)
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Traceback (most recent call last):
  File "Lib/tkinter/test/test_tkinter/test_variables.py", line 38, in test___del__
    self.assertFalse(self.root.call("info", "exists", "varname"))
AssertionError: '0' is not false

======================================================================
FAIL: test_dont_unset_not_existing (__main__.TestVariable)
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Traceback (most recent call last):
  File "Lib/tkinter/test/test_tkinter/test_variables.py", line 45, in test_dont_unset_not_existing
    self.assertFalse(self.root.call("info", "exists", "varname"))
AssertionError: '0' is not false

----------------------------------------------------------------------

Here is a patch which fixes tkinter and tests.

----------
assignee: serhiy.storchaka
components: Tkinter
files: tkinter_variables_wantobjects.patch
keywords: patch
messages: 206926
nosy: serhiy.storchaka
priority: normal
severity: normal
stage: patch review
status: open
title: Tkinter variables no works with wantobject is false
type: behavior
versions: Python 2.7, Python 3.3, Python 3.4
Added file: http://bugs.python.org/file33265/tkinter_variables_wantobjects.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20067>
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