Update app.py

app.py

@@ -3,23 +3,30 @@ from qiskit import QuantumCircuit, transpile
 from qiskit_aer import Aer
 from qiskit.visualization import plot_histogram
 import matplotlib.pyplot as plt
+import ast
 
-def apply_cnot(initial_state):
+def apply_cnot(initial_state_str):
+    # Convert input string to actual Python list
+    initial_state = ast.literal_eval(initial_state_str)
+
+    # Create Quantum Circuit
     qc = QuantumCircuit(2, 2)
     qc.initialize(initial_state, [0, 1])
     qc.cx(0, 1)
     qc.measure([0, 1], [0, 1])
     
+    # Simulation
     simulator = Aer.get_backend('qasm_simulator')
     transpiled_circuit = transpile(qc, simulator)
     result = simulator.run(transpiled_circuit, shots=1024).result()
     counts = result.get_counts()
     
-    # Plotting results
+    # Plot results
     fig, ax = plt.subplots()
     plot_histogram(counts, ax=ax)
     return fig
 
+# Gradio Interface
 interface = gr.Interface(
     fn=apply_cnot,
     inputs=gr.Radio(["[1,0,0,0]", "[0,1,0,0]", "[0,0,1,0]", "[0,0,0,1]"], label="Initial State"),