Python Setting Command Line Arguments

# Example for setting command line arguments

from optparse import OptionParser
parser = OptionParser()
parser.add_option("-f", "--filename", dest="filename", help="upload one FILE", metavar="FILE")

(options, args)  =  parser.parse_args()
input_filename  =  [str(options.filename)]
print 'Filename provided as input is', input_filename

# How to provide command line input is
# python -f  sample_file

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