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- best_match(supported, header)
- Return mime-type with the highest quality ('q') from list of candidates.
Takes a list of supported mime-types and finds the best match for all the
media-ranges listed in header. The value of header must be a string that
conforms to the format of the HTTP Accept: header. The value of 'supported'
is a list of mime-types. The list of supported mime-types should be sorted
in order of increasing desirability, in case of a situation where there is
a tie.
>>> best_match(['application/xbel+xml', 'text/xml'],
'text/*;q=0.5,*/*; q=0.1')
'text/xml'
- fitness_and_quality_parsed(mime_type, parsed_ranges)
- Find the best match for a mime-type amongst parsed media-ranges.
Find the best match for a given mime-type against a list of media_ranges
that have already been parsed by parse_media_range(). Returns a tuple of
the fitness value and the value of the 'q' quality parameter of the best
match, or (-1, 0) if no match was found. Just as for quality_parsed(),
'parsed_ranges' must be a list of parsed media ranges.
- parse_media_range(range)
- Parse a media-range into its component parts.
Carves up a media range and returns a tuple of the (type, subtype,
params) where 'params' is a dictionary of all the parameters for the media
range. For example, the media range 'application/*;q=0.5' would get parsed
into:
('application', '*', {'q', '0.5'})
In addition this function also guarantees that there is a value for 'q'
in the params dictionary, filling it in with a proper default if
necessary.
- parse_mime_type(mime_type)
- Parses a mime-type into its component parts.
Carves up a mime-type and returns a tuple of the (type, subtype, params)
where 'params' is a dictionary of all the parameters for the media range.
For example, the media range 'application/xhtml;q=0.5' would get parsed
into:
('application', 'xhtml', {'q', '0.5'})
- quality(mime_type, ranges)
- Return the quality ('q') of a mime-type against a list of media-ranges.
Returns the quality 'q' of a mime-type when compared against the
media-ranges in ranges. For example:
>>> quality('text/html','text/*;q=0.3, text/html;q=0.7,
text/html;level=1, text/html;level=2;q=0.4, */*;q=0.5')
0.7
- quality_parsed(mime_type, parsed_ranges)
- Find the best match for a mime-type amongst parsed media-ranges.
Find the best match for a given mime-type against a list of media_ranges
that have already been parsed by parse_media_range(). Returns the 'q'
quality parameter of the best match, 0 if no match was found. This function
bahaves the same as quality() except that 'parsed_ranges' must be a list of
parsed media ranges.
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