__init__.pyo: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/lib/python2.6/site-packages/askbot/bin/__init__.pyo - from package: askbot
/usr/lib/python2.6/site-packages/django/bin/__init__.pyo - from package: Django14
/usr/lib/python2.6/site-packages/django/bin/profiling/__init__.pyo - from package: Django14
/usr/lib/python2.6/site-packages/windmill/bin/__init__.pyo - from package: python-windmill
/usr/lib/python2.6/site-packages/shinken/bin/__init__.pyo - from package: shinken

You may install the required package with command yum install {package}

Error in other languages:
__init__.pyo: bevel nie gevind nie
__init__.pyo: comandă negăsită
__init__.pyo: comando não encontrado
__init__.pyo: commande introuvable
__init__.pyo: command not found
__init__.pyo: käsku ei ole
__init__.pyo: không tìm thấy lệnh
__init__.pyo: komanda nerasta
__init__.pyo: Kommando nicht gefunden.
__init__.pyo: kommandot finns inte
__init__.pyo: komut yok
__init__.pyo: nie znaleziono polecenia
__init__.pyo: níor aimsíodh an t-ordú
__init__.pyo: no se encontró la orden
__init__.pyo: no s'ha trobat l'ordre
__init__.pyo: opdracht niet gevonden
__init__.pyo: parancs nem található
__init__.pyo: perintah tidak ditemukan
__init__.pyo: príkaz nenájdený
__init__.pyo: příkaz nenalezen
__init__.pyo: команда не найдена
__init__.pyo: командата не е открита
__init__.pyo: 命令找不到
__init__.pyo: コマンドが見つかりません