bank.py: 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 Debian possible default full paths are:

/usr/share/games/oneisenough/bin/bank.py - from package: oneisenough

You may install the required package with command apt-get install {package}

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