qiskit.pulse.ScheduleBlock.search_parameters¶

ScheduleBlock.search_parameters(parameter_regex)[source]¶

Search parameter with regular expression.

This method looks for the scope-aware parameters. For example,

from qiskit import pulse, circuit

amp1 = circuit.Parameter("amp")
amp2 = circuit.Parameter("amp")

with pulse.build() as sub_prog:
    pulse.play(pulse.Constant(100, amp1), pulse.DriveChannel(0))

with pulse.build() as main_prog:
    pulse.call(sub_prog, name="sub")
    pulse.play(pulse.Constant(100, amp2), pulse.DriveChannel(0))

main_prog.search_parameters("root::sub::amp")

This finds amp1 with scoped name “root::sub::amp”.

Parameters: parameter_regex (str) – Regular expression for scoped parameter name.
Return type: List[Parameter]
Returns: Parameter objects that have corresponding name.