Ratio datatype is not part of the spec even though clojure.edn supports it.

It seems that the ratio datatype is simply missing from the specification.
Nevertheless pr-str and clojure-edn/read-string both handle ratios ,e.g.1/2 3/5, as if they were part of the spec.

user=> (pr-str 2/4)
"1/2"
user=> (clojure.edn/read-string "1/2")
1/2

[swaroopch]

@Ticking Since there is no built-in ratio type in Python, any suggestions on what would be the ideal way to handle this?

@swaroopch To me it seems that there is a module in the python std lib since 2.6 called fractions which introduces a ratio type.

EDIT:
Nevertheless the problem of a target language not supporting different EDN types seems to be a reasonable concern. So the question is, how is this handled for other datatypes (e.g. symbols and keywords)?
edn_python seems to go with custom classes for keywords and symbols. Would this be appropriate for ratios as well or should it fall back and turn the ratio into a simple float?

[swaroopch]

@Ticking Sorry for my confusion, I thought this was a issue raised on my own edn_format Python library, I didn't realize before that this issue was raised on the EDN spec. But to follow up, I have implemented the same for my library - swaroopch/edn_format#23

[rschmitt]

It doesn't look like the Ratio type is supported by edn-ruby either:

~ # irb
2.2.0 :001 > require 'edn'
 => true
2.2.0 :002 > EDN.read("24")
 => 24
2.2.0 :003 > EDN.read('"asdf"')
 => "asdf"
2.2.0 :004 > EDN.read('3/25')
 => 3