Remove deprecation warning, remove old draw, and rename display as draw in Circuit class

doc/source/code-examples/advancedexamples.rst

@@ -1151,7 +1151,7 @@ Additionally, one can also pass single-qubit readout error probabilities (`reado
     )
 
     print("raw circuit:")
-    print(circuit.draw())
+    circuit.draw()
 
     parameters = {
         "t1": {"0": 250*1e-06, "1": 240*1e-06},
@@ -1168,7 +1168,7 @@ Additionally, one can also pass single-qubit readout error probabilities (`reado
     noisy_circuit = noise_model.apply(circuit)
 
     print("noisy circuit:")
-    print(noisy_circuit.draw())
+    noisy_circuit.draw()
 
 .. testoutput::
    :hide:
@@ -1242,7 +1242,7 @@ Let's see how to use them. For starters, let's define a dummy circuit with some
    circ.add(gates.M(*range(nqubits)))
 
    # visualize the circuit
-   print(circ.draw())
+   circ.draw()
 
    #  q0: ─RZ─RX─RZ─RX─RZ─o────o────────M─
    #  q1: ─RZ─RX─RZ─RX─RZ─X─RZ─X─o────o─M─

doc/source/code-examples/examples.rst

@@ -310,7 +310,7 @@ For example
     from qibo.models import QFT
 
     c = QFT(5)
-    print(c.draw())
+    c.draw()
     # Prints
     '''
     q0: ─H─U1─U1─U1─U1───────────────────────────x───

examples/adiabatic_qml/adiabatic-qml.ipynb

@@ -568,7 +568,7 @@
     "circ1 = rotcirc.rotations_circuit(t=0.1)\n",
     "circ2 = rotcirc.rotations_circuit(t=0.8)\n",
     "\n",
-    "print(f\"Circuit diagram: {circ1.draw()}\")\n",
+    "print(f\"Circuit diagram: {str(circ1)}\")\n",
     "print(f\"\\nCirc1 params: {circ1.get_parameters()}\")\n",
     "print(f\"\\nCirc2 params: {circ2.get_parameters()}\")"
    ]

examples/anomaly_detection/test.py

@@ -99,7 +99,7 @@ def compute_loss_test(encoder, vector):
     encoder_test = make_encoder(n_qubits, n_layers, trained_params, q_compression)
     encoder_test.compile()
     print("Circuit model summary")
-    print(encoder_test.draw())
+    encoder_test.draw()
 
     print("Computing losses...")
     # Compute loss for standard data

examples/anomaly_detection/train.py

@@ -123,7 +123,7 @@ def train_step(batch_size, encoder, params, dataset):
     # Create and print encoder circuit
     encoder = make_encoder(n_qubits, n_layers, params, q_compression)
     print("Circuit model summary")
-    print(encoder.draw())
+    encoder.draw()
 
     # Define optimizer parameters
     steps_for_epoch = math.ceil(train_size / batch_size)

examples/circuit-draw-mpl/qibo-draw-circuit-matplotlib.ipynb

@@ -101,7 +101,7 @@
     "    \n",
     "ansatz.add((gates.RY(q, theta=0) for q in range(nqubits)))\n",
     "ansatz.add(gates.M(qubit) for qubit in range(2))\n",
-    "print(ansatz.draw())"
+    "ansatz.draw()"
    ]
   },
   {
@@ -185,7 +185,7 @@
     "c.add(gates.X(1))\n",
     "c.add(gates.X(0))\n",
     "c.add(gates.M(qubit) for qubit in range(2))\n",
-    "print(c.draw())"
+    "c.draw()"
    ]
   },
   {
@@ -206,7 +206,7 @@
     }
    ],
    "source": [
-    "plot_circuit(c);"
+    "plot_circuit(c)"
    ]
   },
   {
@@ -231,7 +231,7 @@
     "c = QFT(5)\n",
     "c.add(gates.M(qubit) for qubit in range(2))\n",
     "\n",
-    "print(c.draw())"
+    "c.draw()"
    ]
   },
   {
@@ -384,7 +384,7 @@
     }
    ],
    "source": [
-    "print(c.fuse().draw())"
+    "c.fuse().draw()"
    ]
   },
   {

examples/qcnn_classifier/qcnn_demo.ipynb

@@ -240,7 +240,7 @@
    "source": [
     "test = QuantumCNN(nqubits=4, nlayers=1, nclasses=2)\n",
     "testcircuit = test._circuit\n",
-    "print(testcircuit.draw())"
+    "testcircuit.draw()"
    ]
   },
   {

examples/qfiae/qfiae_demo.ipynb

@@ -655,7 +655,7 @@
    ],
    "source": [
     "circuit_a_prob = create_circuit_a(n_qubits = 4,b_max = x_max_int, b_min = x_min_int)\n",
-    "print(circuit_a_prob.draw())"
+    "circuit_a_prob.draw()"
    ]
   },
   {
@@ -753,7 +753,7 @@
     }
    ],
    "source": [
-    "print(create_circuit_q(n_qubits=4,circuit_a=circuit_a_prob).draw())"
+    "create_circuit_q(n_qubits=4,circuit_a=circuit_a_prob).draw()"
    ]
   },
   {

src/qibo/gates/abstract.py

@@ -268,7 +268,7 @@ def on_qubits(self, qubit_map) -> "Gate":
                 c.add(gates.CNOT(2, 3).on_qubits({2: 3, 3: 0})) # equivalent to gates.CNOT(3, 0)
                 c.add(gates.CNOT(2, 3).on_qubits({2: 1, 3: 3})) # equivalent to gates.CNOT(1, 3)
                 c.add(gates.CNOT(2, 3).on_qubits({2: 2, 3: 1})) # equivalent to gates.CNOT(2, 1)
-                print(c.draw())
+                c.draw()
             .. testoutput::
 
                 q0: ───X─────

src/qibo/gates/measurements.py

@@ -247,7 +247,7 @@ def on_qubits(self, qubit_map) -> "Gate":
                 c = models.Circuit(3)
                 c.add(measurement.on_qubits({0: 0, 1: 2}))
                 assert c.queue[0].result is measurement.result
-                print(c.draw())
+                c.draw()
             .. testoutput::
 
                 q0: ─M─

src/qibo/models/circuit.py

@@ -1377,26 +1377,4 @@ def draw(self, line_wrap: int = 70, legend: bool = False):
         Returns:
             String containing text circuit diagram.
         """
-        qibo.config.log.warning(
-            "Starting on qibo 0.2.13, ``Circuit.draw`` will work in-place. "
-            + "The in-place method is currently implemented as ``Circuit.display``, but "
-            + "will be renamed as ``Circuit.draw`` on release 0.2.13. "
-            + "In release 0.2.12, the in-place display of circuits is accessible as "
-            + "``Circuit.display``."
-        )
-        return self.diagram(line_wrap, legend)
-
-    def display(self, line_wrap: int = 70, legend: bool = False):
-        """Draw text circuit using unicode symbols.
-
-        Args:
-            line_wrap (int, optional): maximum number of characters per line. This option
-                split the circuit text diagram in chunks of line_wrap characters.
-                Defaults to :math:`70`.
-            legend (bool, optional): If ``True`` prints a legend below the circuit for
-                callbacks and channels. Defaults to ``False``.
-
-        Returns:
-            String containing text circuit diagram.
-        """
-        sys.stdout.write(self.diagram(line_wrap, legend))
+        sys.stdout.write(self.diagram(line_wrap, legend) + "\n")

tests/test_measurements.py

@@ -443,7 +443,7 @@ def test_measurement_basis_list(backend):
     result = backend.execute_circuit(c, nshots=100)
     assert result.frequencies() == {"0011": 100}
     assert (
-        c.draw()
+        str(c)
         == """q0: ─H─H───M─
 q1: ───────M─
 q2: ─X─H─H─M─