関連ワード:  python check if string is none or whitespace    python check if string is empty or whitespace    python check if string is not empty or whitespace    python check if string is null empty or whitespace    python check if string contains non whitespace    check if string is empty or spaces python    check if string is only whitespace python    python check if string is none or empty    check if string is whitespace python  
結果 : python check if string is none or whitespace