从python脚本中获取变量的值

Question

I have a python script that returns a json object. Say, for example i run the following:

exec('python /var/www/abc/abc.py');

and it returns a json object, how can i assign the json object as a variable in a php script.

Example python script:

#!/usr/bin/python
import sys 

def main():
    data = {"Fail": 35}
    sys.stdout.write(str(data))

main()

Example PHP script:

<?php

exec("python /home/amyth/Projects/test/variable.py", $output, $v);
echo($output);

?>

The above returns an empty Array. Why so ?

I want to call the above script from php using the exec method and want to use the json object returned by the python script. How can i achieve this ?

Update:

The above works if i use another shell command, For Example:

<?php

exec("ls", $output, $v);
echo($output);

?>

Anyone knows the reason ?

Answer 1

If the idea is you'll have a Python script which prints JSON data to standard out, then you're probably looking for popen .

Something like...

<?php

$f = popen('python /var/www/abc/abc.py', 'r');
if ($f === false)
{
   echo "popen failed";
   exit 1;
}
$json = fgets($f);
fclose($f);

...will grab the output into the $json variable.

As for your example Python script, if the idea is you're trying to convert the Python dictionary {"tests": "35"} to JSON, and print to standard out, you need to change loads to dumps and return to print , so it looks like...

import simplejson

def main():
    data = simplejson.dumps({"tests": "35"})
    print data

main()