70 lines
2.1 KiB
Plaintext
70 lines
2.1 KiB
Plaintext
---
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title: Qobj
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description: API reference for qiskit.qobj.Qobj
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in_page_toc_min_heading_level: 1
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python_api_type: class
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python_api_name: qiskit.qobj.Qobj
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---
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# Qobj
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<Class id="qiskit.qobj.Qobj" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.21/qiskit/qobj/__init__.py" signature="Qobj(qobj_id=None, config=None, experiments=None, header=None)" modifiers="class">
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Bases: [`qiskit.qobj.qasm_qobj.QasmQobj`](qiskit.qobj.QasmQobj "qiskit.qobj.qasm_qobj.QasmQobj")
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A backwards compat alias for QasmQobj.
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Initialize a Qobj object.
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## Methods
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### from\_dict
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<Function id="qiskit.qobj.Qobj.from_dict" signature="Qobj.from_dict(data)" modifiers="classmethod">
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Create a new QASMQobj object from a dictionary.
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**Parameters**
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**data** (*dict*) – A dictionary representing the QasmQobj to create. It will be in the same format as output by [`to_dict()`](qiskit.qobj.Qobj#to_dict "qiskit.qobj.Qobj.to_dict").
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**Returns**
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The QasmQobj from the input dictionary.
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**Return type**
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[QasmQobj](qiskit.qobj.QasmQobj "qiskit.qobj.QasmQobj")
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</Function>
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### to\_dict
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<Function id="qiskit.qobj.Qobj.to_dict" signature="Qobj.to_dict()">
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Return a dictionary format representation of the QASM Qobj.
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Note this dict is not in the json wire format expected by IBMQ and qobj specification because complex numbers are still of type complex. Also this may contain native numpy arrays. When serializing this output for use with IBMQ you can leverage a json encoder that converts these as expected. For example:
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```python
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import json
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import numpy
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class QobjEncoder(json.JSONEncoder):
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def default(self, obj):
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if isinstance(obj, numpy.ndarray):
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return obj.tolist()
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if isinstance(obj, complex):
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return (obj.real, obj.imag)
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return json.JSONEncoder.default(self, obj)
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json.dumps(qobj.to_dict(), cls=QobjEncoder)
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```
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**Returns**
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A dictionary representation of the QasmQobj object
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**Return type**
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dict
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</Function>
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</Class>
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