class documentation

class MarkSafe(Expr):

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Mark the wrapped expression as safe (wrap it as Markup).
Method as​_const Return the value of the expression as constant or raise Impossible if this was not possible.
Class Variable expr Undocumented
Class Variable fields Undocumented

Inherited from Expr:

Method can​_assign Check if it's possible to assign something to this node.
Class Variable abstract Undocumented

Inherited from Node (via Expr):

Method find Find the first node of a given type. If no such node exists the return value is None.
Method find​_all Find all the nodes of a given type. If the type is a tuple, the check is performed for any of the tuple items.
Method iter​_child​_nodes Iterates over all direct child nodes of the node. This iterates over all fields and yields the values of they are nodes. If the value of a field is a list all the nodes in that list are returned.
Method iter​_fields No summary
Method set​_ctx No summary
Method set​_environment Set the environment for all nodes.
Method set​_lineno Set the line numbers of the node and children.
Method __eq__ Undocumented
Method __init__ Undocumented
Method __repr__ Undocumented
Method dump Undocumented
Class Variable attributes Undocumented
Class Variable environment Undocumented
Class Variable lineno Undocumented
def as_const(self, eval_ctx=None):

Return the value of the expression as constant or raise Impossible if this was not possible.

An EvalContext can be provided, if none is given a default context is created which requires the nodes to have an attached environment.

Changed in version 2.4: the eval_ctx parameter was added.
Parameters
eval​_ctx:t.Optional[EvalContext]Undocumented
Returns
MarkupUndocumented
expr: Expr =

Undocumented

fields: tuple[str, ...] =

Undocumented