parameters: (self, node)
return_statement: return ast.NodeTransformer.visit(self, node)
docstring: Ensure statement only contains allowed nodes.
docstring_summary: Ensure statement only contains allowed nodes.
docstring_tokens: Ensure statement only contains allowed nodes .
function: def visit(self, node):
          """Ensure statement only contains allowed nodes."""
          if not isinstance(node, self.ALLOWED):
              raise SyntaxError('Not allowed in environment markers.\n%s\n%s' %
                                 (self.statement,
                                 (' ' * node.col_offset) + '^'))
          return ast.NodeTransformer.visit(self, node)
function_tokens: def visit ( self , node ) : if not isinstance ( node , self . ALLOWED ) : raise SyntaxError ( 'Not allowed in environment markers.\n%s\n%s' % ( self . statement , ( ' ' * node . col_offset ) + '^' ) ) return ast . NodeTransformer . visit ( self , node )