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[('debug', None), ('name', 'pypy'), ('options', ()), ('path', None), ('version', None)]
>>> sorted(Interpreter.parse('/usr/bin/python3.3-dbg').items())
[('debug', '-dbg'), ('name', 'python'), ('options', ()), ('path', '/usr/bin/'), ('version', '3.3')]
>>> sorted(Interpreter.parse('#! /usr/bin/pypy --foo').items())
[('debug', None), ('name', 'pypy'), ('options', ('--foo',)), ('path', '/usr/bin/'), ('version', None)]
>>> sorted(Interpreter.parse('#! /usr/bin/python3.2').items())
[('debug', None), ('name', 'python'), ('options', ()), ('path', '/usr/bin/'), ('version', '3.2')]
>>> sorted(Interpreter.parse('/usr/bin/python3.2-dbg --foo --bar').items())
[('debug', '-dbg'), ('name', 'python'), ('options', ('--foo', '--bar')), ('path', '/usr/bin/'), ('version', '3.2')]
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>>> i.sitedir(version='2.5')
'/usr/lib/python2.5/site-packages/'
>>> i.sitedir(version=Version('2.7'))
'/usr/lib/python2.7/dist-packages/'
>>> i.sitedir(version='3.1', gdb=True, package='python3-foo')
'debian/python3-foo/usr/lib/debug/usr/lib/python3/dist-packages/'
>>> i.sitedir(version=Version('3.2'))
'/usr/lib/python3/dist-packages/'
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'/usr/lib/pypy/dist-packages/'
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>>> i.cache_file('foo.py', Version('3.1'))
'foo.pyc'
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>>> i.check_extname('foo.so', version='3.3') # doctest: +ELLIPSIS
'foo.cpython-33m-....so'
>>> i.check_extname('foo.abi3.so', version='3.3')
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'foo/bar/baz.cpython-33m-....so'
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