pyfastx: unified access to FASTA and FASTX sequence files

Usage

>>> from pyfastx import FastX, FastXIter
>>> fa = FastXIter('pyfastx/test/data/key.fasta')
>>> for record in fa:
...    record.name, record.seq, record.qual
('a extra', 'AAaa', None)
('b extra', 'AAbb', None)
('c extra', 'AAcc', None)


>>> fa = FastX('pyfastx/test/data/key.fasta')
>>> list(fa)
[BROKEN]


# or a dictionary.
#>>> header = fxz.iterkeys().next()
#>>> print fxz[header]
<SequenceRecord>