code: def visit_raise(self, node):
          
          if node.exc:
              if node.cause:
                  return "raise %s from %s" % (
                      node.exc.accept(self),
                      node.cause.accept(self),
                  )
              return "raise %s" % node.exc.accept(self)
          return "raise"
docs: return an astroid.Raise node as string