Agree, just copying the existing code though
On Apr 14, 2014 4:49 PM, "Jorge Cañardo Alastuey" <notifications@github.com>
wrote:

> In skbio/parse/sequences/fastq.py:
>
> >  from skbio.core.exception import FastqParseError
> >
> >
> > +def _is_casava_v180_or_later(header_line):
> > +    """ True if this file is generated by Illumina software post-casava 1.8 """
> > +    assert header_line.startswith('@'),\
>
> If it wasn't a private function I'd recommend raising a more specific
> ValueError ("argument that has the right type but an inappropriate
> value") keeping the same error message ;)
>
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>