dimod.serialization.coo.dump¶

dump(bqm: dimod.binary.binary_quadratic_model.BinaryQuadraticModel, fp: TextIO, vartype_header: bool = False)[source]¶

Dump a binary quadratic model to a file in COOrdinate format.

Parameters

bqm – Binary quadratic model to save to a file in COO format.
fp – File pointer to a file opened in write mode.
vartype_header – Prefix the Vartype to the output.

Examples

>>> from dimod.serialization import coo
>>> bqm = dimod.BinaryQuadraticModel.from_ising({0: 1, 1: 2}, {(0, 1): -1})
>>> with open('my_saved_bqm.txt', 'w') as f:           
...    coo.dump(bqm, f, vartype_header=True)