Update app.py

app.py

@@ -77,17 +77,20 @@ def algorithms_cycle_detection():
                 try:
                     edges = []
                     # Split input by commas and process each edge
-                    for edge in edges_input.split(","):
-                        edge = edge.strip()
-                        if edge:  # Ensure the string is not empty
-                            # Print the edge string to debug
-                            st.write(f"Parsing edge: {edge}")
-                            # Remove spaces and extra characters, and convert to tuple
-                            edge_tuple = edge.strip("()").split(",")
+                    edge_strings = edges_input.split(",")
+                    for edge_str in edge_strings:
+                        edge_str = edge_str.strip()
+                        if edge_str:  # Ensure the string is not empty
+                            # Remove parentheses and split by comma
+                            edge_tuple = edge_str.strip("()").split(",")
                             if len(edge_tuple) == 2:
-                                # Safely convert to integers
-                                edge_tuple = tuple(map(int, edge_tuple))
-                                edges.append(edge_tuple)
+                                try:
+                                    # Safely convert to integers and add the edge
+                                    edge_tuple = tuple(map(int, edge_tuple))
+                                    edges.append(edge_tuple)
+                                except ValueError:
+                                    st.error(f"Invalid edge format: {edge_str}")
+                                    return
 
                     if edges:
                         # Create the graph