関連ワード:  what is code block in python    what is block code block suit in python    what is used to define a block code in python    what is a reusable block of code in python    what is used to indicate a block of code in python    what is used to mark a block of code in python    what is used to end a block of code in python    what is used to distinguish a block of code in python    what is code block in programming    what is code block