iotop crashes with UnboundLocalError

[Gavin Bisesi]

Binary package hint: iotop

Immediately after installing iotop on Ubuntu Karmic, it crashes.

root@player:~# apt-get install iotop
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  iotop
0 upgraded, 1 newly installed, 0 to remove and 5 not upgraded.
Need to get 21.4kB of archives.
After this operation, 164kB of additional disk space will be used.
Get:1 http://us.archive.ubuntu.com karmic/universe iotop 0.3-1 [21.4kB]
Fetched 21.4kB in 0s (55.7kB/s)
Selecting previously deselected package iotop.
(Reading database ... 81004 files and directories currently installed.)
Unpacking iotop (from .../archives/iotop_0.3-1_all.deb) ...
Setting up iotop (0.3-1) ...

Processing triggers for python-support ...
root@player:~# iotop
Traceback (most recent call last):
  File "/usr/bin/iotop", line 16, in <module>
    main()
  File "/usr/lib/pymodules/python2.6/iotop/ui.py", line 361, in main
    main_loop()
  File "/usr/lib/pymodules/python2.6/iotop/ui.py", line 351, in <lambda>
    main_loop = lambda: run_iotop(options)
  File "/usr/lib/pymodules/python2.6/iotop/ui.py", line 267, in run_iotop
    return curses.wrapper(run_iotop_window, options)
  File "/usr/lib/python2.6/curses/wrapper.py", line 47, in wrapper
    stdscr.keypad(0)
UnboundLocalError: local variable 'stdscr' referenced before assignment

[Paul Wise (Debian) (pabs)]

Please upgrade to a newer version of iotop and try again.

[Gavin Bisesi (gavin-bisesi)]

0.3-1 appears to be the latest version in Karmic.

[Paul Wise (Debian) (pabs)]

Then ask for a backport and try that:

https://wiki.ubuntu.com/UbuntuBackports

[Paul Wise (Debian) (pabs)]

An update:

Looking at the code, it is a bug in the Python curses wrapper, that is fixed in python 2.7:

http://bugs.python.org/issue5622

As a workaround until this is fixed or Ubuntu switches to python 2.7, please install python2.7 and run iotop like this:

python2.7 /usr/bin/iotop

Does that work for you or is there some other error?

[Paul Wise (Debian) (pabs)]

It was confirmed that upgrading to python2.7 prevents the issue.

[dino99 (9d9)]

Support for this version has ended