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I used defaultdic to store some variables but the output is blank

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I have the following script which does not return anything, no apparent mistake but my output file is empty.I am just trying to extract some decimal number from a file according to their names which are in another file. from collections import defaultdict import numpy as np

[code]ercc_contigs= {}
for line in open ('Faq_ERCC_contigs_name.txt'):
    gene = line.strip().split()

ercc_rpkm = defaultdict(lambda: np.zeros(1, dtype=float))
output_file = open('out.txt','w')

rpkm_file = open('RSEM_Faq_Q1.genes.results.txt')
rpkm_file.readline()
for line in rpkm_file:
    line = line.strip()
    columns =  line.strip().split()
    gene = columns[0].strip()
    rpkm_value = float(columns[6].strip())
    if gene in ercc_contigs:
        ercc_rpkm[gene] += rpkm_value

ercc_fh = open ('out.txt','w')
for gene, rpkm_value in ercc_rpkm.iteritems():
    ercc = '{0}\t{1}\n'.format(gene, rpkm_value)
    ercc_fh.write (ercc)[/code]

If someone could help me spot what's wrong it would be much appreciate cheers

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I used defaultdic to store some variables but the output is blank claire morandin <claire.morandin@gmail.com> - 2013-06-09 03:12 -0700
  Re: I used defaultdic to store some variables but the output is blank Peter Otten <__peter__@web.de> - 2013-06-09 13:56 +0200
  Re: I used defaultdic to store some variables but the output is blank claire morandin <claire.morandin@gmail.com> - 2013-06-09 05:27 -0700
    Re: I used defaultdic to store some variables but the output is blank Peter Otten <__peter__@web.de> - 2013-06-09 14:46 +0200

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