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Fix tape_expand.py documentation examples #6812

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merged 5 commits into from
Jan 15, 2025
+7 −5
Merged

Fix tape_expand.py documentation examples #6812

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4610587
fix: Update docstrings
andrijapau Jan 13, 2025
3b0af37
fix: Update docstrings
andrijapau Jan 13, 2025
27a002c
Update pennylane/transforms/tape_expand.py
andrijapau Jan 13, 2025
95fd016
Merge branch 'master' into fix-decomp-doc-string
andrijapau Jan 15, 2025
866c49d
Merge branch 'master' into fix-decomp-doc-string
andrijapau Jan 15, 2025
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12 changes: 7 additions & 5 deletions pennylane/transforms/tape_expand.py
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Original file line number Diff line number Diff line change
Expand Up @@ -303,7 +303,7 @@ def create_decomp_expand_fn(custom_decomps, dev, decomp_depth=None):

.. code-block:: python

def custom_cnot(wires):
def custom_cnot(wires, **_):
return [
qml.Hadamard(wires=wires[1]),
qml.CZ(wires=[wires[0], wires[1]]),
Expand Down Expand Up @@ -358,7 +358,7 @@ def _create_decomp_preprocessing(custom_decomps, dev, decomp_depth=None):

.. code-block:: python

def custom_cnot(wires):
def custom_cnot(wires, **_):
return [
qml.Hadamard(wires=wires[1]),
qml.CZ(wires=[wires[0], wires[1]]),
Expand Down Expand Up @@ -435,7 +435,7 @@ def set_decomposition(custom_decomps, dev, decomp_depth=None):

.. code-block:: python

def custom_cnot(wires):
def custom_cnot(wires, **_):
return [
qml.Hadamard(wires=wires[1]),
qml.CZ(wires=[wires[0], wires[1]]),
Expand All @@ -458,10 +458,12 @@ def circuit():
0: ─╭●─┤ <Z>
1: ─╰X─┤

Now let's set up a context where the custom decomposition will be applied:
Now let's set up a context where the custom decomposition will be applied.
To see our change, the circuit is drawn at the device level where the
custom decomposition will be applied.

>>> with qml.transforms.set_decomposition({qml.CNOT : custom_cnot}, dev):
... print(qml.draw(circuit, wire_order=[0, 1])())
... print(qml.draw(circuit, level="device")())
0: ────╭●────┤ <Z>
1: ──H─╰Z──H─┤

Expand Down
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