json2python.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/windmill/bin/json2python.pyo - from package: python-windmill

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

Error in other languages:
json2python.pyo: bevel nie gevind nie
json2python.pyo: comandă negăsită
json2python.pyo: comando não encontrado
json2python.pyo: commande introuvable
json2python.pyo: command not found
json2python.pyo: käsku ei ole
json2python.pyo: không tìm thấy lệnh
json2python.pyo: komanda nerasta
json2python.pyo: Kommando nicht gefunden.
json2python.pyo: kommandot finns inte
json2python.pyo: komut yok
json2python.pyo: nie znaleziono polecenia
json2python.pyo: níor aimsíodh an t-ordú
json2python.pyo: no se encontró la orden
json2python.pyo: no s'ha trobat l'ordre
json2python.pyo: opdracht niet gevonden
json2python.pyo: parancs nem található
json2python.pyo: perintah tidak ditemukan
json2python.pyo: príkaz nenájdený
json2python.pyo: příkaz nenalezen
json2python.pyo: команда не найдена
json2python.pyo: командата не е открита
json2python.pyo: 命令找不到
json2python.pyo: コマンドが見つかりません