def write_as_fasta(self, fh, n=None):
"""-----------------------------------------------------------------------------------------
Write to a file in fasta format, if n is defined, write only the specified ORF in the list
:param fh, open filehandle for writing
:param n: integer, index of ORF to write, write all if not specified
:return: n
-----------------------------------------------------------------------------------------"""
fasta = Fasta()
nwritten = 0
if n is None:
# print all ORFS
for orf in self.orf:
fasta.id = orf['id']
fasta.doc = 'len={} strand={} frame={} begin={} end={}'. \
format(orf['length'], orf['direction'], orf['frame'], orf['begin'], orf['end'])
fasta.seq = orf['sequence']
fh.write(fasta.format(linelen=60))
fh.write('\n')
nwritten += 1
elif n < len(self.orf):
# print the selected ORF
orf = self.orf[n]
fasta.id = orf['id']
fasta.doc = 'len={} strand={} frame={} begin={} end={}'. \
format(orf['length'], orf['direction'], orf['frame'], orf['begin'], orf['end'])
fasta.seq = orf['sequence']
fh.write(fasta.format(linelen=60))
fh.write('\n')
nwritten = 1
return nwritten
import sys
from sequence.fasta import Fasta
from plotter import Plotter
match = Windowmatch()
print('done {}'.format(type(match)))
print(match.alphabet)
# match.readNCBI('table/NUC4.4.matrix')
print(match.format())
fasta1 = Fasta(filename=sys.argv[1])
fasta1.read()
fasta2 = Fasta()
fasta2.id = 'seq2'
fasta2.doc = ' bases 1:50'
fasta2.seq = fasta1.seq[:50]
fasta1.seq = fasta1.seq[:200]
match.s1 = fasta1
match.s2 = fasta2
l1, l2 = match.seqToInt()
print(l1, l2)
match.window = 10
match.threshold = 5
nmatch = match.windowScore()
print('window: {} threshold: {} nmatch: {}'. \
format(match.window, match.threshold, nmatch))
# the true end)
filtered.append([pos, runlen])
diagonal[d] = filtered
return nmatch
# --------------------------------------------------------------------------------------------------
# Testing
# --------------------------------------------------------------------------------------------------
if __name__ == '__main__':
print('\ntest 0: identity matching')
print('\texpect 7 matches\n')
fasta = Fasta()
fasta.id = 'test0'
fasta.doc = '5 letter DNA test'
fasta.seq = 'ACAGT'
print('{}\n'.format(fasta.format()))
match = Match()
match.s1 = fasta
match.s2 = fasta
nmatch = match.identityPos()
print('matches: {}'.format(nmatch))
print('\ntest 1: identity matching, unequal length sequences')
print('\texpect 11 matches\n')
match = Match()
fasta1 = Fasta()
if info['feature'] in features:
flist[info['ID']] = info
nfeature += 1
elif info['Parent'] in flist:
for k in info:
if k not in flist[info['Parent']]:
flist[info['Parent']][k] = info[k]
else:
# flist[info['ID']] = info
sys.stderr.write('unknown feature {}\n'.format(info['feature']))
# write out sequences
for gene in flist:
thisgene = flist[gene]
f = Fasta()
f.id = thisgene['ID']
f.doc = ''
for k in save:
if k in thisgene:
f.doc += ' {}:{}'.format(k, thisgene[k])
f.seq = seq[thisgene['seqname']][thisgene['begin'] - 1:thisgene['end']]
if (thisgene['end'] - thisgene['begin'] > 100000):
# coordinates cross origin
f.seq = seq[thisgene['seqname']][thisgene['end'] - 1:] + seq[
thisgene['seqname']][:thisgene['begin']]
if thisgene['strand'] == '-':
f.seq = complement(f.seq)
sys.stdout.write(f.format(linelen=100))
return True
# --------------------------------------------------------------------------------------------------
# Testing
# --------------------------------------------------------------------------------------------------
if __name__ == '__main__':
from wordmatch import Match # for testing only
from sequence.fasta import Fasta
print('\ntest 1: identity matching, unequal length sequences')
print('\texpect 11 matches\n')
match = Match()
fasta1 = Fasta()
fasta1.id = 'test0.1'
fasta1.doc = '5 letter DNA test'
fasta1.seq = 'ACAGT'
match.s1 = fasta1
fasta2 = Fasta()
fasta2.id = 'test0.2'
fasta2.doc = '7 letter DNA test'
fasta2.seq = 'ACAGTAA'
match.s2 = fasta2
nmatch = match.identity()
plot = Plotter()
plot.match = match
plot.setup()
"phams":["56154"],
"Start":15822,
"Stop":16230,
"Length":408,
"Name":"24",
"translation":"MTNVFTLDAMREETRKKYQPVKIGLSEDVTVELKPLLKLGKKAREAVADAVKEIEALPDEIDEDDEDSDELMDEVAEKICESIAKVFKLIATSPRKLLAELDTEEEPQIRAELYGAVLRTWMRET QLGEAAPSPN",
"Orientation":"F",
"Notes":"b'tail assembly chaperone'"} ...
Michael Gribskov 10 April 2021
================================================================================================="""
import sys
import json
from sequence.fasta import Fasta
# --------------------------------------------------------------------------------------------------
# main program
# --------------------------------------------------------------------------------------------------
if __name__ == '__main__':
fp = open(sys.argv[1], 'r')
phage = json.load(fp)
for gene in phage['results']:
f = Fasta()
f.id = gene['GeneID']
f.seq = gene['translation']
f.doc = gene['Notes'][2:-1]
print(f.format(linelen=100))
exit(0)
base = base.replace('.seq', '')
sys.stdout.write('\n\tExpanded file: {}\n\tbasename: {}\n'.format(
infilename, base))
outfilename = base + '.fasta'
outfile = None
try:
outfile = open(outfilename, 'w')
except:
sys.stderr.write(
'Unable to open output file ({})\n'.format(outfilename))
exit(2)
# process all sequences in the file
n = 0
for seq in infile:
fasta = Fasta()
fasta.id = base + '_{}'.format(n)
fasta.seq = seq.rstrip().upper()
fasta.doc = 'length={}'.format(fasta.length())
outfile.write(fasta.format(linelen=100))
n += 1
infile.close()
outfile.close()
sys.stdout.write('\t{} sequences written to {}\n'.format(
n, outfilename))
# end of loop over files
exit(0)