---
title: ObservableLike (latest version)
description: API reference for qiskit.primitives.ObservableLike in the latest version of qiskit
source: https://eu-de.quantum.cloud.ibm.com/docs/en/api/qiskit/qiskit.primitives.ObservableLike
---

# ObservableLike

Default value: `str | qiskit.quantum_info.operators.symplectic.pauli.Pauli | qiskit.quantum_info.operators.symplectic.sparse_pauli_op.SparsePauliOp | qiskit.quantum_info.SparseObservable | collections.abc.Mapping[str | qiskit.quantum_info.operators.symplectic.pauli.Pauli, float]`

Represent a union type

E.g. for int | str