Accesing maya scene file to return data to subprocss with mayapy interpreter

Coding
1

I am stuck with this and I really need to figure this out

I used the subprocess method and got somewhat closer to what I am looking for, I implemented the readFile() method to read san_telus_pan_v009.ma which gets read by readMayaFile.py via mayapy interpreter but the getcams function in it doesnt return a value that I can capture by subprocss


        def readFile(self):
                ## call to readMayaFile.py using mayapy.exe interpreter

                fileToOpen="I:/scenes/[san_telus_pan_v009.ma](http://san_telus_pan_v009.ma)"
                code_str = \
    """
    import readMayaFile
    readMayaFile.getCams('"""+fileToOpen+"""')
    """
                # save the code
                phile=os.path.join(os.path.split(__file__)[0],"test.py")
                filename=phile
                fout = open(filename, "w")
                fout.write(code_str)
                fout.close()
            # execute the code with mayapy and pipe the result to a string
            #mayapy="D:/Program Files/Autodesk/Maya2013/bin/mayapy.exe"
            #the path D:/Program Files/Autodesk/Maya2013/bin/ must be added to sys path environment variables
                test = "mayapy " + filename
                process = subprocess.Popen(test, shell=True, stdout=subprocess.PIPE)
                process.wait()
                print process.returncode,"<" # 0 = success, optional check
            # read the result to a string
                strRead = process.stdout.read()
                print strRead

after I click QPushButton the above slot is executinf and i get the following result in Command prompt

E:\Dropbox\Rnd\myprojects\Batch>ipython RenderUI.py
File read in 0 seconds.
0 <
[u’frontShape’, u’perspShape’, u’sideShape’, u’topShape’]

but the above valuse got printed should also be returned by the getCams function in readMayaFile.py


#mapay interprer file
import os
import maya.standalone
import maya.cmds as cmds


def getCams(phileToOpen):
         maya.standalone.initialize(name='python')
        cmds.file(phileToOpen, force=True,open=True)
        cams=[cmds.ls](http://cmds.ls)(type="camera")

        print cams
        return cams

do I have to change something in readMayaFile.py to return the value to subprocess or do I need to change some thing in the actual slot( readFile() ) ?