関連ワード:  python test if string is in list    python test if string exists in list    python test for string in list    python check if string is in list case insensitive    python check if string is in list of dictionaries    python check if string is in list element    python check if string is in list of tuples    python check if string is in list of substrings    python test if variable is string or list    python check if string is not in list