In [1]: from quantestpy import QuantestPyCircuit
   ...: from quantestpy.assertion.not_entangled import assert_not_entangled

In [2]: # check all qubits, not entangled
   ...: qc = QuantestPyCircuit(3)
   ...: qc.add_gate({"name": "h", "control_qubit": [], "target_qubit": [0],
   ...:             "control_value": [], "parameter": []})
   ...: qc.add_gate({"name": "x", "control_qubit": [], "target_qubit": [1],
   ...:             "control_value": [], "parameter": []})
   ...: assert_not_entangled(circuit=qc)
In [3]:

In [3]: # check all qubits, entangled
   ...: qc = QuantestPyCircuit(3)
   ...: qc.add_gate({"name": "h", "control_qubit": [], "target_qubit": [0],
   ...:             "control_value": [], "parameter": []})
   ...: qc.add_gate({"name": "x", "control_qubit": [0], "target_qubit": [1],
   ...:             "control_value": [1], "parameter": []})
   ...: assert_not_entangled(circuit=qc)
---------------------------------------------------------------------------
QuantestPyAssertionError                  Traceback (most recent call last)
Cell In [3], line 7
      3 qc.add_gate({"name": "h", "control_qubit": [], "target_qubit": [0],
      4             "control_value": [], "parameter": []})
      5 qc.add_gate({"name": "x", "control_qubit": [0], "target_qubit": [1],
      6             "control_value": [1], "parameter": []})
----> 7 assert_not_entangled(circuit=qc)

File /mnt/workspace/quantestpy_fork/quantestpy/assertion/not_entangled.py:79, in assert_not_entangled(circuit, qubits, atol, msg)
     77 err_msg = "\n".join(err_msg_list)
     78 msg = ut_test_case._formatMessage(msg, err_msg)
---> 79 raise QuantestPyAssertionError(msg)

QuantestPyAssertionError: qubit 0 is entangled with qubit(s) [1].
qubit 1 is entangled with qubit(s) [0].

In [4]: 

In [4]: # check specific qubits, not entangled
   ...: qc = QuantestPyCircuit(4)
   ...: qc.add_gate({"name": "h", "control_qubit": [], "target_qubit": [0],
   ...:             "control_value": [], "parameter": []})
   ...: qc.add_gate({"name": "x", "control_qubit": [0], "target_qubit": [1],
   ...:             "control_value": [1], "parameter": []})
   ...: assert_not_entangled(circuit=qc, qubits=[2, 3])

In [5]: 

In [5]: # check specific qubits, entangled
   ...: qc = QuantestPyCircuit(4)
   ...: qc.add_gate({"name": "h", "control_qubit": [], "target_qubit": [0],
   ...:             "control_value": [], "parameter": []})
   ...: qc.add_gate({"name": "x", "control_qubit": [0], "target_qubit": [1],
   ...:             "control_value": [1], "parameter": []})
   ...: qc.add_gate({"name": "x", "control_qubit": [1], "target_qubit": [2],
   ...:              "control_value": [1], "parameter": []})
   ...: assert_not_entangled(circuit=qc, qubits=[2, 3])
---------------------------------------------------------------------------
QuantestPyAssertionError                  Traceback (most recent call last)
Cell In [5], line 9
      5 qc.add_gate({"name": "x", "control_qubit": [0], "target_qubit": [1],
      6             "control_value": [1], "parameter": []})
      7 qc.add_gate({"name": "x", "control_qubit": [1], "target_qubit": [2],
      8              "control_value": [1], "parameter": []})
----> 9 assert_not_entangled(circuit=qc, qubits=[2, 3])

File /mnt/workspace/quantestpy_fork/quantestpy/assertion/not_entangled.py:79, in assert_not_entangled(circuit, qubits, atol, msg)
     77 err_msg = "\n".join(err_msg_list)
     78 msg = ut_test_case._formatMessage(msg, err_msg)
---> 79 raise QuantestPyAssertionError(msg)

QuantestPyAssertionError: qubit 2 is entangled with qubit(s) [0, 1].

In [6]: