Hola,
¿Es siempre un json lo que recibes? Lo digo porque quizás puedes intentar
decodificarlo como json ¿no? https://docs.python.org/2/library/json.html
He comprobado la sintaxis de la cadena que pasas y es un formato válido de
json:
{
"format":"JSON",
"result":{
"devices":[
{
"key":"SCGDE1BA:180340320",
"channels":[
{
"name":"PF",
"unit":"",
"meta":"PF",
"value":"1.000"
},
{
"name":"P-WSpt",
"unit":"kW",
"meta":"P-WSpt",
"value":"935"
},
{
"name":"Vac",
"unit":"V",
"meta":"Vac",
"value":"217.5"
},
{
"name":"Iac",
"unit":"A",
"meta":"Iac",
"value":"513.8"
},
{
"name":"Pac",
"unit":"kW",
"meta":"Pac",
"value":"335.2"
},
{
"name":"Qac",
"unit":"kV Ar",
"meta":"Qac",
"value":"-1.0"
},
{
"name":"Sac",
"unit":"kVA",
"meta":"Sac",
"value":"335.1"
},
{
"name":"Fac",
"unit":"Hz",
"meta":"Fac",
"value":"49.950"
},
{
"name":"ErrNoFirst",
"unit":"",
"meta":"ErrNoFirst",
"value":"0"
},
{
" name":"P-WModFailStt",
"unit":"",
"meta":"P-WModFailStt",
"value":"Off"
},
{
"name":"P-WModStt",
"unit":"",
"meta":"P-WModStt",
"value":"Off"
},
{
"name":"Dsc",
"unit":"",
"meta":"Dsc",
"value":"---"
},
{
"name":"Firmware-9",
"unit":"",
"meta":"Firmware-9",
"value":" "
},
{
"name":"Cntry",
"unit":"",
"meta":"Cntry",
"value":"DE1"
},
{
"name":"Type",
"unit":"",
"meta":"Type",
"value":"SCG"
},
{
"name":"Mode",
"unit":"",
"meta":"Mode",
"value":"Operation"
},
{
"name":"Error",
"unit":"",
"meta":"Error",
"value":"---"
}
]
}
]
},
"version":"1.0"
}
A no ser que en otras ocasiones recibas otra cosas, lo que yo te
recomendaría es que lo decodifiques y lo uses cono clave, valor.
Espero que te ayude, un saludo!
Un saludo
--
*José Miguel Pérez Álvarez*, @jozemi <http://twitter.com/jozemi>
Linkedin: http://es.linkedin.com/in/jozemi
joz...@gmail.com
On Tue, Jun 3, 2014 at 11:22 AM, Miguel Angel Rodriguez <maro...@gmail.com>
wrote:
>
> Hola a todos,
>
> Estoy intentando parsear con Python una gran cadena que recibo en un
> software de comunicaciones que estoy programando.
>
> La cadena que yo recibo es la siguiente:
>
> value_str =
> {"format":"JSON","result":{"devices":[{"key":"SCGDE1BA:180340320","channels":[{"name":"PF","unit":"","meta":"PF","value":"1.000"},{"name":"P-WSpt","unit":"kW","meta":"P-WSpt","value":"935"},
>
> {"name":"Vac","unit":"V","meta":"Vac","value":"217.5"},{"name":"Iac","unit":"A","meta":"Iac","value":"513.8"},{"name":"Pac","unit":"kW","meta":"Pac","value":"335.2"},{"name":"Qac","unit":"kV
>
> Ar","meta":"Qac","value":"-1.0"},{"name":"Sac","unit":"kVA","meta":"Sac","value":"335.1"},{"name":"Fac","unit":"Hz","meta":"Fac","value":"49.950"},{"name":"ErrNoFirst","unit":"","meta":"ErrNoFirst","value":"0"},{"
>
> name":"P-WModFailStt","unit":"","meta":"P-WModFailStt","value":"Off"},{"name":"P-WModStt","unit":"","meta":"P-WModStt","value":"Off"},{"name":"Dsc","unit":"","meta":"Dsc","value":"---"},{"name":"Firmware-9","unit":"","meta":"Firmware-9","value":"
> "},{"name":"Cntry","unit":"","meta":"Cntry","value":"DE1"}
> ,{"name":"Type","unit":"","meta":"Type","value":"SCG"},{"name":"Mode","unit":"","meta":"Mode","value":"Operation"},{"name":"Error","unit":"","meta":"Error","value":"---"}]}]},"version":"1.0"
>
>
> Yo solo quiero quedarme con los name y value existente.
>
> LA forma en la que lo estoy intentando es la siguiente:
>
> for channel_str in re.findall("\"name\":\"[A-Za-z0-9\-.
> ]+\",\"value\":\"[A-Za-z0-9\-. ]*\"",value_str):
> d_value = re.findall("[A-Za-z0-9.\-]+",channel_str)
>
> Pero de esta forma no entra en el for.
>
> ¿Alguien me puede ayudar?
>
> Gracias y un saludo
>
>
>
>
>
>
> --
> Miguel Ángel Rodríguez de Alba
> 678304435
> maro...@gmail.com
>
> _______________________________________________
> Python-es mailing list
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