Pressing buttons by 'text' on Android app using Culebra

I have a Android App that I am trying to test using culebra. The code is shown below.

'''reated on 2017-02-08 by Culebra v12.5.3
                      __    __    __    __
                     /  \  /  \  /  \  /  \ 
____________________/  __\/  __\/  __\/  __\_____________________________
___________________/  /__/  /__/  /__/  /________________________________
                   | / \   / \   / \   / \   \___
                   |/   \_/   \_/   \_/   \    o \ 
                                           \_____/--<
@author: Diego Torres Milano
@author: Jennifer E. Swofford (ascii art snake)
'''


import re
import sys
import os


from com.dtmilano.android.viewclient import ViewClient
from com.dtmilano.android.adb.adbclient import DOWN_AND_UP

kwargs1 = {'ignoreversioncheck': False, 'verbose': False, 'ignoresecuredevice': False}
device, serialno = ViewClient.connectToDeviceOrExit(**kwargs1)
kwargs2 = {'forceviewserveruse': False, 'useuiautomatorhelper': False, 'ignoreuiautomatorkilled': True, 'autodump': False, 'startviewserver': True, 'compresseddump': True}
vc = ViewClient(device, serialno, **kwargs2)

# Installs the Android package. Notice that this method returns a boolean, so you can test
# to see if the installation worked.
vc.installPackage('Abc App.Android.Abc App.Android-Signed.apk')


# sets a variable with the package's internal name
package = 'Abc App.Android.Abc App.Android'

# sets a variable with the name of an Activity in the packag
activity = 'md591ecfcc00ede54e89ae8714.MainActivity'

# sets the name of the component to start
runComponent = package + '/' + activity

# Runs the component
device.startActivity(component=runComponent)

vc.sleep(5)

#vc = ViewClient(device)
vc.dump()

for bt in [ 'PRO', 'FIE', 'DIA']:
    b = vc.findViewWithAttribute('text:mText', bt)
    if b:
        (x, y) = b.getXY()
        print >>sys.stderr, "clicking b%s @ (%d,%d) ..." % (bt, x, y)
        b.touch()

    time.sleep(7)


# Presses the Menu button
# device.press('KEYCODE_MENU', DOWN_AND_UP)

# Writes the screenshot to a file (you can use a plain filename or use these placeholders)
vc.writeImageToFile('/tmp/${serialno}-${focusedwindowname}-${timestamp}.png', 'PNG')

When I run the above script as

$ python test_culebra.py

I get the following error.

[100%] /data/local/tmp/AbcApp.Android.AbcApp.Android-Signed.apk
        pkg: /data/local/tmp/AbcApp.Android.AbcApp.Android-Signed.apk
Success
Traceback (most recent call last):
  File "monkey_runner_culebra.py", line 53, in <module>
    print >>sys.stderr, "clicking b%s @ (%d,%d) ..." % (bt, x, y)
NameError: name 'x' is not defined

It is installing and loading the app. However it is not able to find the button with the text PRO',FIE,DIA` etc.

What am I doing wrong here.

Run

culebra -Gu -o myscript.py --scale=0.5

you'll see a window representing your device, much like

then you click on the buttons (I'm running ApiDemos here) and culebra generates

vc.dump(window=-1)
vc.findViewWithTextOrRaise(u'NORMAL').touch()
vc.sleep(_s)
vc.dump(window=-1)
vc.findViewWithTextOrRaise(u'SMALL').touch()
vc.sleep(_s)
vc.dump(window=-1)
vc.findViewWithTextOrRaise(u'OFF').touch()
vc.sleep(_s)
vc.dump(window=-1)

which you can then manually turn into

for t in ['NORMAL', 'SMALL', 'OFF']:
    b = vc.findViewWithTextOrRaise(t)
    print >> sys.stderr, "clicking", b,  "@", b.getXY()
    b.touch()

or even

for t in ['NORMAL', 'SMALL', 'OFF']:
    vc.findViewWithTextOrRaise(t).touch()

this is assuming the screen does not change when you click your buttons, if it does you need to call vc.dump() again.

Then you can copy and paste to your original script.