Why tornado.web.RequestHandler.arguments.get is binary?

Laszlo Nagy gandalf at shopzeus.com
Sat Nov 16 20:38:43 CET 2013


I believe most data passed in URLs are character data. RFC 2986 also 
suggest that the standard should be percent encoded UTF-8:

> The generic URI syntax mandates that new URI schemes that provide for 
> the representation of character data in a URI must, in effect, 
> represent characters from the unreserved set without translation, and 
> should convert all other characters to bytes according to UTF-8 
> <http://en.wikipedia.org/wiki/UTF-8>, and then percent-encode those 
> values. This requirement was introduced in January 2005 with the 
> publication of RFC 3986 <http://tools.ietf.org/html/rfc3986>. URI 
> schemes introduced before this date are not affected. [1]

It is somewhat confusing that URI may be used to represent binary data. 
More specifically, http and https URLs contain textual data in almost 
all cases. When it is textual, it must be in UTF-8 (as dictated by the 
RFC). So what is the reason in arguments.get returning binary data?


[1] http://en.wikipedia.org/wiki/Percent-encoding#Percent-encoding_in_a_URI


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