Update app.py

app.py

@@ -5,36 +5,43 @@ from langchain_groq import ChatGroq
 from langchain.chains import GraphCypherQAChain
 from dotenv import load_dotenv
 
-# Load environment variables
 # Load environment variables
 load_dotenv()
+
+# Set environment variables
 NEO4J_URI = "neo4j+s://64beefae.databases.neo4j.io"
 NEO4J_USERNAME = "neo4j"
 NEO4J_PASSWORD = "OTj5yGnWLF59yx4UX1g3xABarVOvVKiM3CT9L4bNkF8"
 GROQ_API_KEY = "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"
 
-
-# Initialize Neo4j graph
-graph = Neo4jGraph(url=NEO4J_URI, username=NEO4J_USERNAME, password=NEO4J_PASSWORD)
-
-# Load movie dataset into Neo4j
-moview_query = """
-LOAD CSV WITH HEADERS FROM
-'https://raw.githubusercontent.com/Pk-Kolhapurkar/graphdb_neo4j/main/indian%20movies.csv' AS row
-MERGE (m:Movie {id: row.ID})
-SET m.year = toInteger(row.Year),
-    m.title = row['Movie Name'],
-    m.timing = toInteger(row['Timing(min)']),
-    m.rating = toFloat(row['Rating(10)']),
-    m.votes = toInteger(row.Votes),
-    m.language = row.Language
-FOREACH (genre IN split(row.Genre, '|') |
-    MERGE (g:Genre {name: trim(genre)})
-    MERGE (m)-[:IN_GENRE]->(g))
-
-"""
-graph.query(moview_query)
-graph.refresh_schema()
+# Print environment variables for debugging
+print("NEO4J_URI:", NEO4J_URI)
+print("NEO4J_USERNAME:", NEO4J_USERNAME)
+print("NEO4J_PASSWORD:", NEO4J_PASSWORD)
+
+try:
+    # Initialize Neo4j graph
+    graph = Neo4jGraph(url=NEO4J_URI, username=NEO4J_USERNAME, password=NEO4J_PASSWORD)
+
+    # Load movie dataset into Neo4j
+    moview_query = """
+    LOAD CSV WITH HEADERS FROM
+    'https://raw.githubusercontent.com/Pk-Kolhapurkar/graphdb_neo4j/main/indian%20movies.csv' AS row
+    MERGE (m:Movie {id: row.ID})
+    SET m.year = toInteger(row.Year),
+        m.title = row['Movie Name'],
+        m.timing = toInteger(row['Timing(min)']),
+        m.rating = toFloat(row['Rating(10)']),
+        m.votes = toInteger(row.Votes),
+        m.language = row.Language
+    FOREACH (genre IN split(row.Genre, '|') |
+        MERGE (g:Genre {name: trim(genre)})
+        MERGE (m)-[:IN_GENRE]->(g))
+    """
+    graph.query(moview_query)
+    graph.refresh_schema()
+except Exception as e:
+    print("Error initializing Neo4jGraph:", str(e))
 
 # Initialize LLM
 llm = ChatGroq(groq_api_key=GROQ_API_KEY, model_name="Gemma2-9b-It")