Re: function return

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  • Matt Nordhoff

    Re: function return

    Beema Shafreen wrote:
    hi all,
    >
    I have a script using functions , I have a problem in returning the
    result. My script returns only one line , i donot know where the looping
    is giving problem, Can any one suggest, why this is happening and let me
    know how to return all the lines
    >
    def get_ptm():
    fh = open('file.txt' , 'r')
    data_lis = []
    for line in fh.readlines():
    As an aside, you should change the above line to:

    for line in fh:

    "readlines( )" will read the entire file into memory at once, while just
    iterating through it won't, so you'll save memory on large files.
    data = line.strip().sp lit('\t')
    id = data[0].strip()
    gene_symbol = data[1].strip()
    ptms = data[8].strip()
    result = "%s\t%s\t%s " %(id,gene_symbo l,ptms)
    This is very trivial, but you could change the above line to:

    result = "\t".join(i d, gene_symbol, ptms)
    return result
    fh.close()
    --
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