finesse.model.Model.get_element¶

Model.get_element(value)[source]¶

Returns an element in this model that matches the requested value. This input can be either a string name or an element that might be owned by another model. In the latter case the name attribute will be extracted from the value and a search done in this model for an equivalent element.

Parameters

value[str|`Element`]: Name or equivalently named Element object to extract from this model.

Raises

KeyError when element cannot be found or FinesseException when the
input value cannot be used.

Examples

>>> import finesse
>>> model = finesse.Model()
>>> model.parse('''
... l l1 P=1
... l l2 P=2
... ''')
>>> model.get_element('l1'), model.get_element('l2')
(<'l1' @ 0x122cf9fa0 (Laser)>, <'l2' @ 0x122cf9f40 (Laser)>)

Creating a copy of the model and getting elements will return elements with the same name but different id.

>>> model2 = model.deepcopy()
>>> model2.get_element('l1'), model2.get_element('l2')
(<'l1' @ 0x122d35c10 (Laser)>, <'l2' @ 0x122d35df0 (Laser)>)

Now if we try and select l1 using an element from a different model we should get the correct element with name l1 from that model

>>> model.get_element(model2.l1)
<'l1' @ 0x122cf9fa0 (Laser)>
>>> model2.get_element(model.l1)
<'l1' @ 0x122d35c10 (Laser)>