関連ワード:  python find if string is in list    python test if string is in list    python find if string exists in list    python check if string is in list case insensitive    python check if string is in list of dictionaries    python check to see if string is in list    python check if string is not in list    python check if string is in any list element    python check if string value is in list    python check if string is already in list