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NumPy · Function

np.savetxt

numpy.savetxt writes a one- or two-dimensional array to a text file. It supports custom formats, separators, headers, footers, comments, encoding, and automatic gzip output.

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Syntax

numpy.savetxt(fname, X, fmt='%.18e', delimiter=' ', newline='\n', header='', footer='', comments='# ', encoding=None)

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  • numpy.loadtxt
  • numpy.save
  • numpy.savez
  • numpy.savez_compressed
  • numpy.genfromtxt
  • numpy.ndarray.tofile

Source: numpy.savetxt — NumPy v2.5 Manual. Checked 2026-11-03.