pcp-python: 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/libexec/pcp/bin/pcp-python - from package: pcp

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

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