Solution:Step 1: Understand the Edge constructor parametersEdge(nodeA, nodeB) creates an edge from nodeA to nodeB.Step 2: Access the start node's nameedge.start refers to nodeA, so edge.start.name is 'A'.Final Answer:A -> Option AQuick Check:edge.start.name = 'A' [OK]

[Solved] Given the code:nodeA = Node('A') nodeB = Node('B') edge = Edge(nodeA, nodeB) print(edge.start.name)What will be printed? | LangChain

LangChain - LangGraph for Stateful Agents

Given the code:

nodeA = Node('A')
nodeB = Node('B')
edge = Edge(nodeA, nodeB)
print(edge.start.name)

What will be printed?

AA

BB

CEdge

DError

Step-by-Step Solution

Solution:

Step 1: Understand the Edge constructor parameters
Edge(nodeA, nodeB) creates an edge from nodeA to nodeB.
Step 2: Access the start node's name
edge.start refers to nodeA, so edge.start.name is 'A'.
Final Answer:
A -> Option A
Quick Check:
edge.start.name = 'A' [OK]

Quick Trick: Edge(start, end) stores nodes in order [OK]

Common Mistakes:

MISTAKES

Confusing start and end nodes
Expecting edge to print its own name
Assuming edge has no start property

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Given the code:

Step 1: Understand the Edge constructor parameters

Step 2: Access the start node's name

Final Answer:

Quick Check:

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