jinja2.nodes.UnaryExpr

class documentation

class UnaryExpr(Expr):

Baseclass for all unary expressions.

Method	`as_const`	Return the value of the expression as constant or raise `Impossible` if this was not possible.
Class Variable	`abstract`	Undocumented
Class Variable	`fields`	Undocumented
Class Variable	`node`	Undocumented
Class Variable	`operator`	Undocumented

Inherited from Expr:

Method can_assign Check if it's possible to assign something to this node.

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):

overrides jinja2.nodes.Expr.as_const

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
`t.Any`	Undocumented

abstract: bool =

overrides jinja2.nodes.Expr.abstract

Undocumented

fields: tuple[str, ...] =

overrides jinja2.nodes.Node.fields

Undocumented

node: Expr =

Undocumented

operator: str =

overridden in jinja2.nodes.Neg, jinja2.nodes.Not, jinja2.nodes.Pos

Undocumented