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UsageOptionParser.py

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 python3_18.1.1

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UsageOptionParser.py

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##

##

import sys

from optparse import OptionParser

class UsageOptionParser(OptionParser):

"""

A subclass of OptionParser that prints that overrides error() to print the

whole help text, rather than just the usage string.

"""

def error(self, msg):

"""

Print the help text and exit.

"""

self.print_help(sys.stderr)

sys.stderr.write("\n")

sys.stderr.write(msg)

sys.stderr.write("\n")

sys.exit(2)