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copied!<p>Did you get your answers? </p> <p>One way to debug python exceptions is to move (or copy temporarily for debugging) the code out of the try block. You'll get a full trace.</p> <p>And of course another way is to reduce the test case. Here I've reduced the problems to three lines, and tried the solution hinted at by @s.lott (using 'f:' in the getopts call), and also show at the end how calling with some different test data behaves:</p> <pre><code>$ cat x1.py import sys, getopt opts, args = getopt.getopt(sys.argv[1:],'fdmse:d',['files=','data-source=','mode=','start','end']) print "opts=", opts, "args=", args $ python x1.py -f=dummy.csv argblah Traceback (most recent call last): File "x1.py", line 2, in <module> opts, args = getopt.getopt(sys.argv[1:],'fdmse:d',['files=','data-source=','mode=','start','end']) File "/usr/lib/python2.6/getopt.py", line 91, in getopt opts, args = do_shorts(opts, args[0][1:], shortopts, args[1:]) File "/usr/lib/python2.6/getopt.py", line 191, in do_shorts if short_has_arg(opt, shortopts): File "/usr/lib/python2.6/getopt.py", line 207, in short_has_arg raise GetoptError('option -%s not recognized' % opt, opt) getopt.GetoptError: option -= not recognized $ sed 's/fdm/f:dm/' <x1.py >x2.py $ diff x1.py x2.py 2c2 < opts, args = getopt.getopt(sys.argv[1:],'fdmse:d',['files=','data-source=','mode=','start','end']) --- > opts, args = getopt.getopt(sys.argv[1:],'f:dmse:d',['files=','data-source=','mode=','start','end']) $ python x2.py -f=dummy.csv argblah opts= [('-f', '=dummy.csv')] args= ['argblah'] $ python x1.py -f dummy.csv argblah opts= [('-f', '')] args= ['dummy.csv', 'argblah'] </code></pre>

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