CODEWITHSUNDEEP
pythonpython-2.7pyqt4
Samuel Góngora
Samuel Góngora

Reputation: 151

Collecting a value of a function

I'm using the KISS Python module to collect data from the serial communications port. This module has a function that returns the value of the values obtained from the serial port. The lines of code, obtained the source code of the module are the following:

for frame in frames:
    if len(frame) and ord(frame[0]) == 0:
        self.logger.debug('frame=%s', frame)
        self.logger.debug('hola soy el logger debug')

        if callback:
            callback(frame)

I'm trying to store the value of frame in a variable. I need to do in a thread that I created through inheritance an object of class QThread. I am making an application using PyQt4.

The class is as follows:

class OperativeKISSThread(KISSThread):
    def __init__(self, parent = None):
        KISSThread.__init__(self, parent)

    def doWork(self):
        prueba.read(callback=self.catchValue(frame))
        return True

    def catchValue(self, frame):
        print frame

When I run the above code I get the following screen output:

Traceback (most recent call last):
  File "_client_amp.py", line 432, in run
    success = self.doWork(self.kissTNC)
  File "_client_amp.py", line 452, in doWork
    prueba.read(callback=self.catchValue(frame))
NameError: global name 'frame' is not defined

What changes would be made in my code to get the value of frame?

Upvotes: 1

Views: 42

Answers (1)

DisappointedByUnaccountableMod
DisappointedByUnaccountableMod

Reputation: 6826

The callback should be specified using just the function name, like:

def doWork(self, prueba):
    prueba.read(callback=self.catchValue)
    return True

Upvotes: 2

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