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Unlike GNU :cfunc:`getopt`, after a non-option argument, all further arguments
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are considered also non-options. This is similar to the way non-GNU Unix systems
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Unlike GNU :cfunc:`getopt`, after a non-option argument, all further
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arguments are considered also non-options. This is similar to the way
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non-GNU Unix systems work.
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*long_options*, if specified, must be a list of strings with the names of the
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long options which should be supported. The leading ``'-``\ ``-'`` characters
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should not be included in the option name. Long options which require an
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argument should be followed by an equal sign (``'='``). To accept only long
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options, *options* should be an empty string. Long options on the command line
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can be recognized so long as they provide a prefix of the option name that
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matches exactly one of the accepted options. For example, if *long_options* is
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``['foo', 'frob']``, the option :option:`--fo` will match as :option:`--foo`,
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but :option:`--f` will not match uniquely, so :exc:`GetoptError` will be raised.
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long options which should be supported. The leading ``'-``\ ``-'``
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characters should not be included in the option name. Long options which
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require an argument should be followed by an equal sign (``'='``). Optional
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arguments are not supported. To accept only long options, *options* should
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be an empty string. Long options on the command line can be recognized so
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long as they provide a prefix of the option name that matches exactly one of
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the accepted options. For example, if *long_options* is ``['foo', 'frob']``,
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the option :option:`--fo` will match as :option:`--foo`, but :option:`--f`
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will not match uniquely, so :exc:`GetoptError` will be raised.
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The return value consists of two elements: the first is a list of ``(option,
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value)`` pairs; the second is the list of program arguments left after the
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removed
Doc/library/getopt.rst
