Edge#

classlangchain_core.runnables.graph.Edge(

source:str,

target:str,

data:Stringifiable|None=None,

conditional:bool=False,

)[source]#

Edge in a graph.

Parameters:

• source (str) – The source node id.

• target (str) – The target node id.

• data (Stringifiable |None) – Optional data associated with the edge. Defaults to None.

• conditional (bool) – Whether the edge is conditional. Defaults to False.

Create new instance of Edge(source, target, data, conditional)

Attributes

conditional	Alias for field number 3
data	Alias for field number 2
source	Alias for field number 0
target	Alias for field number 1

Methods

copy(*[, source, target])	Return a copy of the edge with optional new source and target nodes.
count(value, /)	Return number of occurrences of value.
index(value[, start, stop])	Return first index of value.

copy(

*,

source:str|None=None,

target:str|None=None,

)→Edge[source]#

Return a copy of the edge with optional new source and target nodes.

Parameters:

• source (str |None) – The new source node id. Defaults to None.

• target (str |None) – The new target node id. Defaults to None.

Returns:

A copy of the edge with the new source and target nodes.

Return type:

Edge

count(value,/)#

Return number of occurrences of value.

index(value,start=0,stop=9223372036854775807,/)#

Return first index of value.

Raises ValueError if the value is not present.