関連ワード:  python check if parameter is not none    python check if variable is not none    python check if variable is not none or empty    python check if variable is not nonetype    python check if variable is not null    python check if variable is not null or empty    python check if variable exists and is not none    python is not none vs not is none    python check if none or empty    python if not none or empty  
結果 : python check if parameter is not none