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app5.py

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+import streamlit as st
+from dotenv import load_dotenv
+import os
+import pyttsx3
+import threading
+
+from langchain_groq import ChatGroq
+from langchain.chains import LLMChain
+from langchain.prompts import PromptTemplate
+
+# Load environment variables
+load_dotenv()
+GROQ_API_KEY = os.getenv("GROQ_API_KEY")
+
+# Global variable for speech engine
+speech_engine = None
+
+# Function to initialize speech engine
+def initialize_speech_engine():
+    global speech_engine
+    speech_engine = pyttsx3.init()
+
+# Initialize engine at the start
+initialize_speech_engine()
+
+# Global variable to control speech stopping
+stop_speech_flag = False
+
+# Define the best-optimized prompt for structured problem-solving
+optimized_prompt = PromptTemplate(
+    input_variables=["problem"],
+    template=(
+        "You are an advanced AI tutor specializing in solving **math and physics problems** step by step. "
+        "Your goal is to **guide students logically**, ensuring they **understand every step** and its relevance. "
+        "Think like a **patient teacher** who explains concepts with clarity.\n\n"
+
+        "📚 **Guidelines for solving problems:**\n"
+        "1️⃣ **Understanding the Problem:**\n"
+        "   - Restate the problem in simple terms.\n"
+        "   - Identify what is given and what needs to be found.\n\n"
+
+        "2️⃣ **Relevant Concepts & Formulas:**\n"
+        "   - List the key principles, equations, or theorems needed to solve the problem.\n"
+        "   - Explain why they are relevant.\n\n"
+
+        "3️⃣ **Step-by-Step Solution:**\n"
+        "   - Break down the solution into small, logical steps.\n"
+        "   - Show calculations with proper notation.\n"
+        "   - Explain **each transformation, substitution, or simplification** clearly.\n\n"
+
+        "4️⃣ **Final Answer:**\n"
+        "   - ✅ Box or highlight the final result.\n"
+        "   - Include units where applicable.\n\n"
+
+        "5️⃣ **Verification & Insights:**\n"
+        "   - 🔄 Verify the answer using an alternative method (if possible).\n"
+        "   - 🏗️ Provide a real-world analogy or intuition behind the result.\n\n"
+
+        "💡 **Example Solutions:**\n"
+        "---\n"
+        "🔢 **Example 1:**\n"
+        "**Problem:** Find the integral of x.\n\n"
+        "**Solution:**\n"
+        "1️⃣ **Understanding the Problem:** Compute the indefinite integral of f(x) = x.\n"
+        "2️⃣ **Relevant Concepts:** Use the power rule: ∫x^n dx = (x^(n+1))/(n+1) + C.\n"
+        "3️⃣ **Step-by-Step Solution:**\n"
+        "   - Recognize x as x^1.\n"
+        "   - Apply the power rule: increase the exponent by 1, giving x², then divide by the new exponent.\n"
+        "   - Add the constant of integration, C.\n"
+        "4️⃣ **Final Answer:** (x²)/2 + C.\n"
+        "5️⃣ **Verification & Insights:** Differentiating (x²)/2 gives x, confirming correctness.\n\n"
+        "---\n"
+        "🚗 **Example 2:**\n"
+        "**Problem:** A car accelerates from rest at 5 m/s². Find its velocity after 4 seconds.\n\n"
+        "**Solution:**\n"
+        "1️⃣ **Understanding the Problem:** The car starts from rest and accelerates uniformly.\n"
+        "2️⃣ **Relevant Concepts:** Use kinematic equation: v = u + at.\n"
+        "3️⃣ **Step-by-Step Solution:**\n"
+        "   - Given: u = 0 m/s, a = 5 m/s², t = 4 s.\n"
+        "   - Apply formula: v = 0 + (5 × 4) = 20 m/s.\n"
+        "4️⃣ **Final Answer:** v = 20 m/s.\n"
+        "5️⃣ **Verification & Insights:** The result aligns with expected acceleration; using v² = u² + 2as also gives v = 20 m/s.\n\n"
+        "---\n\n"
+
+        "🎯 **Now, solve the following problem using this structured approach:**\n"
+        "**Problem:** {problem}\n\n"
+        "**Solution:**"
+    )
+)
+
+# Initialize Groq API model
+llm = ChatGroq(api_key=GROQ_API_KEY, model_name="gemma2-9b-it")
+llm_chain = LLMChain(llm=llm, prompt=optimized_prompt)
+
+# Function to handle text-to-speech in a separate thread
+def text_to_speech(text):
+    global stop_speech_flag, speech_engine
+    stop_speech_flag = False  # Reset stop flag before speaking
+
+    def speak():
+        global stop_speech_flag, speech_engine
+        if speech_engine is None:
+            initialize_speech_engine()  # Reinitialize if stopped
+        speech_engine.say(text)
+        speech_engine.runAndWait()
+    
+    speech_thread = threading.Thread(target=speak)
+    speech_thread.start()
+
+# Function to stop speech and reinitialize engine
+def stop_speech():
+    global stop_speech_flag, speech_engine
+    stop_speech_flag = True
+    if speech_engine:
+        speech_engine.stop()
+    initialize_speech_engine()  # Reinitialize for next use
+
+# Streamlit UI Design
+st.set_page_config(page_title="STEM Solver 🤖", layout="centered", page_icon="🧠")
+
+st.markdown("<h1 style='text-align: center;'>📚 STEM Problem Solver 🤖</h1>", unsafe_allow_html=True)
+st.markdown("<p style='text-align: center; font-size:18px;'>Enter a math or physics problem, and I'll solve it step by step! 🚀</p>", unsafe_allow_html=True)
+
+# User Input
+problem = st.text_area("📝 Enter your problem:", placeholder="e.g., What is the integral of x?", height=100)
+
+# Solve (Text) Button
+if st.button("🔍 Solve (Text)"):
+    if problem.strip():
+        with st.spinner("Thinking... 🤔"):
+            response = llm_chain.invoke({"problem": problem})
+            solution_text = response['text']
+            st.success("✅ Solution Found!")
+            
+            st.markdown("### ✨ Solve (Text):")
+            st.markdown(f"<div style='background-color:#222831; padding:15px; border-radius:10px; color:white;'>"
+                        f"<p style='font-size:16px;'>{solution_text}</p></div>", unsafe_allow_html=True)
+    else:
+        st.warning("⚠️ Please enter a valid problem.")
+
+# Solve (Speech) Button
+if st.button("🔊 Solve (Speech)"):
+    if problem.strip():
+        with st.spinner("Speaking... 🎤"):
+            response = llm_chain.invoke({"problem": problem})
+            solution_text = response['text']
+            
+            st.success("✅ Solve (Speech) Started!")
+            text_to_speech(solution_text)
+    else:
+        st.warning("⚠️ Please enter a valid problem.")
+
+# Stop Speech Button
+if st.button("🛑 Stop Speech"):
+    stop_speech()
+    st.warning("🔇 Speech Stopped!")
+
+# Footer
+st.markdown("<br><p style='text-align:center; font-size:14px;'>🚀 Created with ❤️ by an AI-powered tutor! 📖</p>", unsafe_allow_html=True)
+

requirements.txt

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+langchain
+langchain-community
+langchain-groq
+python-dotenv
+fastapi
+streamlit
+langsmith
+langserve
+uvicorn
+python-dotenv
+requests
+pyttsx3
+gtts