jinja2.nodes.Const Class Reference

Inheritance diagram for jinja2.nodes.Const:

Collaboration diagram for jinja2.nodes.Const:

Public Member Functions
t.Any	as_const (self, t.Optional[EvalContext] eval_ctx=None)
"Const"	from_untrusted (cls, t.Any value, t.Optional[int] lineno=None, "t.Optional[Environment]" environment=None)
Public Member Functions inherited from jinja2.nodes.Expr
bool	can_assign (self)
Public Member Functions inherited from jinja2.nodes.Node
None	__init__ (self, *t.Any fields, **t.Any attributes)
t.Iterator[t.Tuple[str, t.Any]]	iter_fields (self, t.Optional[t.Container[str]] exclude=None, t.Optional[t.Container[str]] only=None)
t.Iterator["Node"]	iter_child_nodes (self, t.Optional[t.Container[str]] exclude=None, t.Optional[t.Container[str]] only=None)
t.Optional[_NodeBound]	find (self, t.Type[_NodeBound] node_type)
t.Iterator[_NodeBound]	find_all (self, t.Union[t.Type[_NodeBound], t.Tuple[t.Type[_NodeBound],...]] node_type)
"Node"	set_ctx (self, str ctx)
"Node"	set_lineno (self, int lineno, bool override=False)
"Node"	set_environment (self, "Environment" environment)
bool	__eq__ (self, t.Any other)
str	__repr__ (self)
str	dump (self)
Public Member Functions inherited from jinja2.nodes.NodeType
	__new__ (mcs, name, bases, d)

Static Public Attributes
tuple	fields = ("value",)
t	value .Any
Static Public Attributes inherited from jinja2.nodes.Literal
bool	abstract = True
Static Public Attributes inherited from jinja2.nodes.Expr
bool	abstract = True
Static Public Attributes inherited from jinja2.nodes.Node
tuple	fields = ()
tuple	attributes = ("lineno", "environment")
bool	abstract = True
int	lineno
t	environment .Optional["Environment"]

Additional Inherited Members
Public Attributes inherited from jinja2.nodes.Node
	fields

Detailed Description

All constant values.  The parser will return this node for simple
constants such as ``42`` or ``"foo"`` but it can be used to store more
complex values such as lists too.  Only constants with a safe
representation (objects where ``eval(repr(x)) == x`` is true).

Member Function Documentation

as_const()

t.Any jinja2.nodes.Const.as_const	(		self,
		t.Optional[EvalContext]	eval_ctx = None
	)

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

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

.. versionchanged:: 2.4
   the `eval_ctx` parameter was added.

Reimplemented from jinja2.nodes.Expr.

from_untrusted()

"Const" jinja2.nodes.Const.from_untrusted	(		cls,
		t.Any	value,
		t.Optional[int]	lineno = None,
		"t.Optional[Environment]"	environment = None
	)

Return a const object if the value is representable as
constant value in the generated code, otherwise it will raise
an `Impossible` exception.

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The documentation for this class was generated from the following file:

• docs/help/help-venv/lib/python3.12/site-packages/jinja2/nodes.py