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# scipy.io.mmwrite

`scipy.io.``mmwrite`(target, a, comment='', field=None, precision=None)

  Writes the sparse or dense matrix A to a Matrix Market formatted file.

  Inputs:

  > target - Matrix Market filename (extension .mtx) or open file object a - sparse or full matrix comment - comments to be prepended to the Matrix Market file field - ‘real’ | ‘complex’ | ‘pattern’ | ‘integer’ precision - Number of digits to display for real or complex values.

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