Python simplejson quoting for R rjson input
Question: I'm processing data within Python, and would like to stream records to R using
JSON formatting and `simplejson` on the Python side, and `rjson` on the `R`
side.

How can I output records out of Python so that R's `fromJSON` can process them
into a one-line dataframe? Thanks

    
    
     try:
         import simplejson as json
     except ImportError:
         import json
    
     record = {'x':1,'y':1}
     print json.dumps( record )
    

Result:

    
    
     {"y": 1, "x": 1}
    

However, I'd need the result to be `"{\"x\":1,\"y\":2}"`, as `R` needs that
formatting to use the data:

    
    
     library(rjson)
     as.data.frame( fromJSON( "{\"x\":1,\"y\":2}" ) )
       x y
     1 1 2
    

Thanks.


Answer: Two options:

> (1) If your JSON does **not** contain both single & double quotes, wrap the
> entire JSON in the quote type not being used.
>
> (2) If you need to escape the quotes (ie, because both are in your JSON),
> then you need to escape the escape character. That is, use double slashes:
> `\\"y\\"`

(note that the second point applies to any string in R that has needs an
escape character)

