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+The argparse python module provides an easy declarative interface for
+creating command line tools. Argparse knows how to parse the arguments
+and flags from sys.argv, convert arg strings into objects for your program,
+format and print informative help messages, and much more...
+
+The argparse module improves on the standard library optparse module in
+a number of ways including handling positional arguments, support for
+sub-commands, allowing alternative option prefixes like + and /,
+handling zero-or-more and one-or-more style arguments, producing more
+informative usage messages, and providing a much simpler interface for
+custom types and actions.