Edge

class langchain_core.runnables.graph.Edge(source: str, target: str, data: Stringifiable | None = None, conditional: bool = False)

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

__init__()
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.

__init__()

copy(*, source: str | None = None, target: str | None = None) → Edge

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.