# pybedtools.bedtool.BedTool.save_seqs

`BedTool.``save_seqs`(fn)

  Save sequences, after calling BedTool.sequence.

  In order to use this function, you need to have called the `BedTool.sequence()` method.

  A new BedTool object is returned which references the newly saved file.

  Example usage:

      >>> a = pybedtools.BedTool('''
      ... chr1 1 10
      ... chr1 50 55''', from_string=True)
      >>> fasta = pybedtools.example_filename('test.fa')
      >>> a = a.sequence(fi=fasta)
      >>> print(open(a.seqfn).read())
      >chr1:1-10
      GATGAGTCT
      >chr1:50-55
      CCATC
      <BLANKLINE>
      >>> b = a.save_seqs('example.fa')
      >>> assert open(b.fn).read() == open(a.fn).read()
      >>> if os.path.exists('example.fa'):
      ...     os.unlink('example.fa')