---
title: TrotterizationFactory (v0.46)
description: API reference for qiskit.opflow.evolutions.TrotterizationFactory in qiskit v0.46
source: https://eu-de.quantum.cloud.ibm.com/docs/en/api/qiskit/0.46/qiskit.opflow.evolutions.TrotterizationFactory
---

# TrotterizationFactory

*class* `qiskit.opflow.evolutions.TrotterizationFactory`

[GitHub](https://github.com/qiskit/qiskit/tree/stable/0.46/qiskit/opflow/evolutions/trotterizations/trotterization_factory.py)

Bases: [`object`](https://docs.python.org/3/library/functions.html#object)

Deprecated: A factory for conveniently creating TrotterizationBase instances.

## Methods

### build

*static* `build(mode='trotter', reps=1)`

A factory for conveniently creating TrotterizationBase instances.

> **Deprecated since version 0.24.0**
>
> The method `qiskit.opflow.evolutions.trotterizations.trotterization_factory.TrotterizationFactory.build()` is deprecated as of qiskit-terra 0.24.0. It will be removed in the Qiskit 1.0 release. For code migration guidelines, visit [https://qisk.it/opflow\_migration](https://qisk.it/opflow_migration).

**Parameters**

- **mode** ([*str*](https://docs.python.org/3/library/stdtypes.html#str)) – One of ‘trotter’, ‘suzuki’, ‘qdrift’
- **reps** ([*int*](https://docs.python.org/3/library/functions.html#int)) – The number of times to repeat the Trotterization circuit.

**Returns**

The desired TrotterizationBase instance.

**Raises**

[**ValueError**](https://docs.python.org/3/library/exceptions.html#ValueError) – A string not in \[‘trotter’, ‘suzuki’, ‘qdrift’] is given for mode.

**Return type**

[*TrotterizationBase*](/docs/api/qiskit/0.46/qiskit.opflow.evolutions.TrotterizationBase "qiskit.opflow.evolutions.trotterizations.trotterization_base.TrotterizationBase")