Revert change 1.37.
The nanoseconds saved by using dict.fromkeys aren't worth the loss in clarity. Linear searches live on.
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@ -8,22 +8,22 @@ __all__ = ["urlparse", "urlunparse", "urljoin", "urldefrag",
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"urlsplit", "urlunsplit"]
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# A classification of schemes ('' means apply by default)
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uses_relative = dict.fromkeys(['ftp', 'http', 'gopher', 'nntp', 'imap',
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uses_relative = ['ftp', 'http', 'gopher', 'nntp', 'imap',
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'wais', 'file', 'https', 'shttp', 'mms',
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'prospero', 'rtsp', 'rtspu', ''])
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uses_netloc = dict.fromkeys(['ftp', 'http', 'gopher', 'nntp', 'telnet',
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'prospero', 'rtsp', 'rtspu', '']
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uses_netloc = ['ftp', 'http', 'gopher', 'nntp', 'telnet',
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'imap', 'wais', 'file', 'mms', 'https', 'shttp',
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'snews', 'prospero', 'rtsp', 'rtspu', ''])
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non_hierarchical = dict.fromkeys(['gopher', 'hdl', 'mailto', 'news',
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'telnet', 'wais', 'imap', 'snews', 'sip'])
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uses_params = dict.fromkeys(['ftp', 'hdl', 'prospero', 'http', 'imap',
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'snews', 'prospero', 'rtsp', 'rtspu', '']
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non_hierarchical = ['gopher', 'hdl', 'mailto', 'news',
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'telnet', 'wais', 'imap', 'snews', 'sip']
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uses_params = ['ftp', 'hdl', 'prospero', 'http', 'imap',
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'https', 'shttp', 'rtsp', 'rtspu', 'sip',
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'mms', ''])
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uses_query = dict.fromkeys(['http', 'wais', 'imap', 'https', 'shttp', 'mms',
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'gopher', 'rtsp', 'rtspu', 'sip', ''])
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uses_fragment = dict.fromkeys(['ftp', 'hdl', 'http', 'gopher', 'news',
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'mms', '']
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uses_query = ['http', 'wais', 'imap', 'https', 'shttp', 'mms',
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'gopher', 'rtsp', 'rtspu', 'sip', '']
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uses_fragment = ['ftp', 'hdl', 'http', 'gopher', 'news',
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'nntp', 'wais', 'https', 'shttp', 'snews',
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'file', 'prospero', ''])
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'file', 'prospero', '']
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# Characters valid in scheme names
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scheme_chars = ('abcdefghijklmnopqrstuvwxyz'
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