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Code: Alles auswählen

#!/usr/bin/env python
# -*- coding:utf-8 -*-

import sys

from PyQt4.QtGui import QApplication
from PyQt4.uic import loadUi
from ctypes import *

def main():
    app = QApplication(sys.argv)
    window = loadUi("mainwindow.ui")  
    
    def calculate():
      a = window.progressBar.value  # <----- Das Problem
      print(a)
      window.progressBar.setValue(a)
   

    window.pushButton.clicked.connect(calculate)
    
    window.show()
    sys.exit(app.exec_())


      

    
if __name__ == '__main__':
  main()

Code: Alles auswählen

<built-in method value of QProgressBar object at 0x7f05746e3e90>   ###<------ Ausgabe von print(a)
Traceback (most recent call last):
  File "./hello.py", line 17, in calculate
    window.progressBar.setValue(a)
TypeError: QProgressBar.setValue(int): argument 1 has unexpected type 'builtin_function_or_method'

Code: Alles auswählen

In [1]: def foo():
   ...:     return 123
   ...: 

In [2]: foo
Out[2]: <function __main__.foo>

In [3]: foo()
Out[3]: 123