関連ワード:  python check whether variable 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 check if list of variables is not none    python check if at least one variable is not none    python check if multiple variables are not none  
結果 : python check whether variable is not none