ConditionalWorkflow

Conditional Workflows with LangGraph

This directory contains examples of implementing conditional workflows using LangGraph. These examples demonstrate how to create decision-based flows where the execution path changes based on certain conditions or inputs.

Examples

1. Quadratic Equation Solver

File: practice.ipynb

This example implements a quadratic equation solver that demonstrates conditional branching based on the discriminant value:

• State Management: Uses TypedDict to define and manage the equation state
• Conditional Flow:
  • Calculates the discriminant of a quadratic equation
  • Branches to different handlers based on whether the roots are real or complex
  • Demonstrates state transitions in a computational workflow

2. Sentiment Analysis Workflow

File: practice2.ipynb

A more advanced example showing sentiment analysis with conditional responses:

• Sentiment Detection: Uses Google's Gemini model to analyze text sentiment
• Structured Output: Implements Pydantic models for type-safe output
• Dynamic Response: Generates different responses based on sentiment analysis
• State Management: Maintains conversation state across multiple steps

Setup

1. Install the required dependencies:

   pip install -r requirements.txt

2. For the sentiment analysis example, you'll need a Google API key:

   • Get an API key from Google AI Studio
   • Set it in the notebook or as an environment variable

Usage

1. Quadratic Equation Solver:

   • Open practice.ipynb
   • Follow the cells to see how the workflow processes different equations
   • Observe how the flow changes based on the discriminant value

2. Sentiment Analysis:

   • Open practice2.ipynb
   • Update the API key if needed
   • Run the cells to see sentiment analysis in action
   • Experiment with different input texts to see conditional responses

Key Concepts

• State Management: Using TypedDict and Pydantic models to maintain workflow state
• Conditional Branching: Directing flow based on computation results
• Model Integration: Connecting with external AI models for decision making
• Workflow Definition: Structuring complex, multi-step processes

Dependencies

• Python 3.8+
• langgraph
• langchain-google-genai
• pydantic

Related Workflows

Check out other workflow examples in the parent directory for more LangGraph patterns and use cases.