IDLE crashes on code completion

[Filipp Ivanov]

Binary package hint: idle-python3.0

1.Launch IDLE for Python3
2.Press Ctrl-Space
3.IDLE will crash with traceback:

Traceback (most recent call last):
  File "/usr/bin/idle-python3.0", line 5, in <module>
    main()
  File "/usr/lib/python3.0/idlelib/PyShell.py", line 1407, in main
    root.mainloop()
  File "/usr/lib/python3.0/tkinter/__init__.py", line 1012, in mainloop
    self.tk.mainloop(n)
UnicodeDecodeError: 'utf8' codec can't decode bytes in position 0-1: illegal encoding

Note: selecting Edit->Show Completions seems to work ok

First report: Jaunty
Last check: Oneiric Alpha3

[Pablo J. E. Rodriguez (rodablo)]

up to day jaunty, same error.

idle3 tests/test_inventory_activity_or_status.py
Traceback (most recent call last):
  File "/usr/bin/idle3", line 5, in <module>
    main()
  File "/usr/lib/python3.0/idlelib/PyShell.py", line 1407, in main
    root.mainloop()
  File "/usr/lib/python3.0/tkinter/__init__.py", line 1012, in mainloop
    self.tk.mainloop(n)
UnicodeDecodeError: 'utf8' codec can't decode bytes in position 0-1: illegal encoding

[Jacuturu (jacuturu)]

Jaunty, Same error.

Traceback (most recent call last):
  File "/usr/bin/idle3", line 5, in <module>
    main()
  File "/usr/lib/python3.0/idlelib/PyShell.py", line 1407, in main
    root.mainloop()
  File "/usr/lib/python3.0/tkinter/__init__.py", line 1012, in mainloop
    self.tk.mainloop(n)
UnicodeDecodeError: 'utf8' codec can't decode bytes in position 0-1: illegal encoding

[Aviyam Fischer (aviyam)]

9.04, same error:

Traceback (most recent call last):
  File "/usr/bin/idle-python3.0", line 5, in <module>
    main()
  File "/usr/lib/python3.0/idlelib/PyShell.py", line 1407, in main
    root.mainloop()
  File "/usr/lib/python3.0/tkinter/__init__.py", line 1012, in mainloop
    self.tk.mainloop(n)
UnicodeDecodeError: 'utf8' codec can't decode bytes in position 0-1: illegal encoding

[Tamás Kiss (tkiss80)]

Today I compiled the newest Python 3.1.1 from the source tarball using Ubuntu Jaunty's Tk 8.5 instead of the default Tk 8.4, and the bug is still present:

Traceback (most recent call last):
  File "idle3", line 5, in <module>
    main()
  File "/opt/Python-3.1.1/lib/python3.1/idlelib/PyShell.py", line 1420, in main
    root.mainloop()
  File "/opt/Python-3.1.1/lib/python3.1/tkinter/__init__.py", line 1009, in mainloop
    self.tk.mainloop(n)
UnicodeDecodeError: 'utf8' codec can't decode bytes in position 0-1: illegal encoding

[wolfjb (jeff-bowmansarrow)]

Still a problem in 10.04 with stock debs

Traceback (most recent call last):
  File "/usr/bin/idle3", line 5, in <module>
    main()
  File "/usr/lib/python3.1/idlelib/PyShell.py", line 1420, in main
    root.mainloop()
  File "/usr/lib/python3.1/tkinter/__init__.py", line 1012, in mainloop
    self.tk.mainloop(n)
UnicodeDecodeError: 'utf8' codec can't decode bytes in position 0-1: illegal encoding

[yajo (yajodj)]

Same bug in 10.04

[Felix Haller (felixhaller)]

same in 10.10

idle3 crashes with the following Traceback:

Traceback (most recent call last):
  File "/usr/bin/idle3", line 5, in <module>
    main()
  File "/usr/lib/python3.1/idlelib/PyShell.py", line 1420, in main
    root.mainloop()
  File "/usr/lib/python3.1/tkinter/__init__.py", line 1012, in mainloop
    self.tk.mainloop(n)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xc0 in position 0: invalid start byte

[Felix Haller (felixhaller)]

in Interactive Mode a ugly workarround for completion is to use tha TAB Key.

Example:

aba="Test"
abb="Test2"
abc="Test3"

print(a <<<now press the TAB-Key>>>

The Box will show you aba,abb and abc and others...

[Bruce Pieterse (octoquad)]

Same problem with Natty 11.04 using Python 3.2. I'm presuming the correct hexadecimal to use would be 0x02 (SP) not 0xc0 (Illegal Character) according to http://en.wikipedia.org/wiki/UTF_8#Invalid_byte_sequences. Unfortunately, I'm not familiar with Python yet (was busy learning, when I encountered it) but hopefully someone more experience can get this fixed.
--
Traceback (most recent call last):
  File "/usr/bin/idle3", line 5, in <module>
    main()
  File "/usr/lib/python3.2/idlelib/PyShell.py", line 1427, in main
    root.mainloop()
  File "/usr/lib/python3.2/tkinter/__init__.py", line 1012, in mainloop
    self.tk.mainloop(n)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xc0 in position 0: invalid start byte

[Paolo Sammicheli (xdatap1)]

Oneiric update: idle-python2.6 and idle-python2.7 packages are not affected and idle-python2.3 is still affected

x@oneiric:~$ idle-python3.2
Traceback (most recent call last):
  File "/usr/bin/idle-python3.2", line 5, in <module>
    main()
  File "/usr/lib/python3.2/idlelib/PyShell.py", line 1427, in main
    root.mainloop()
  File "/usr/lib/python3.2/tkinter/__init__.py", line 1012, in mainloop
    self.tk.mainloop(n)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xc0 in position 0: invalid start byte

x@oneiric:~$ apt-cache policy idle-python3.2
idle-python3.2:
  Installato: 3.2.1-1
  Candidato: 3.2.1-1
  Tabella versione:
 *** 3.2.1-1 0
        500 http://it.archive.ubuntu.com/ubuntu/ oneiric/universe i386 Packages
        100 /var/lib/dpkg/status

[Paolo Sammicheli (xdatap1)]

Architecture: i386
DistroRelease: Ubuntu 11.10
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110803.1)
Package: python3.2 3.2.1-1
PackageArchitecture: i386
ProcEnviron:
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 3.0.0-7.9-generic 3.0.0
Tags: oneiric running-unity
Uname: Linux 3.0.0-7-generic i686
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Paolo Sammicheli (xdatap1)]

apport information

[Benito Mourelo (benito)]

The fix released for Python Issue1028 was applied to the sources of Python 3.1.4 ( http://hg.python.org/cpython/rev/82cfbe2ddfbb ).

I tested that version 3.2.2-0ubuntu1 of the Ubuntu's package python3.2 and includes the patch but idle continues crashing on my instalation of Ubuntu 11.04 x86_64.

This fix for Python Issue1028 was applied and works in my installation of Fedora 16 x86_64 ( package python3-3.2.1-1.fc16.x86_64 and tk-8.5.11-1.fc16.x86_64 ).

 I suspect that the upstream Python fix is not sufficient in Ubuntu.

[Benito Mourelo (benito)]

Fixed in 12.04 LTS.