make that:
note that you put the "return" statement inside the loop, so returning only one line is the expected behaviour.
to fix this, you can append the result strings to the data_lis list inside the loop:
result = "%s\t%s\t%s" %(id,gene_symbol,ptms)
data_lis.append(result)
and then return the list when done:
> fh.close()
return data_lis
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