code: def indent(self, code, level=1):
      '''python's famous indent'''
      lines = code.split('\n')
      lines = tuple(self.indent_space*level + line for line in lines)
      return '\n'.join(linesf indent(self, code, level=1):
      '''python's famous indent'''
      lines = code.split('\n')
      lines = tuple(self.indent_space*level + line for line in lines)
      return '\n'.join(lines)
docs: python's famous indent