code: def block(self, *blocks, **kwargs) -> "CodeBlock":
          
          assert "name" not in kwargs
          kwargs.setdefault("code", self)
          code = CodeBlock(**kwargs)
          for block in blocks:
              if block is not None:
                  code._blocks.append((0, block))
          return code
docs: Build a basic code block.
          Positional arguments should be instances of CodeBlock or strings.
          All code blocks passed as positional arguments are added at indentation level 0.
          None blocks are skipped.