Context import bug fix

[mayank-cse1]

Issue: NameError: name 'Context' is not defined

Description

The error occurs because the Context object is referenced in the dispatch_calls function but was not imported at the beginning of the script.

The Context class is essential for managing workflow execution in llama_index, particularly when handling multiple tool calls in a sequential or parallel fashion.

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** Root Cause**

• The function dispatch_calls is defined as:

  @step(pass_context=True)
  async def dispatch_calls(self, ctx: Context, ev: GatherToolsEvent) -> ToolCallEvent:

  • Here, ctx: Context is expected as an argument, but Context is not defined or imported anywhere in the script.
  • This leads to NameError: name 'Context' is not defined when the workflow runs.

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** Fix: Import Context from llama_index**

To resolve the issue, add the missing import at the beginning of the script:

from llama_index.core.workflow import (
    Workflow,
    Event,
    StartEvent,
    StopEvent,
    step,
    Context
)

This ensures that the Context object is recognized when used in dispatch_calls and other functions that require workflow execution management.

** Impact of the Fix**

• Ensures proper workflow execution and tool dispatching in RouterOutputAgentWorkflow.
• Prevents runtime crashes due to missing references.
• Improves code reliability for multi-tool execution.

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