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  1. from PyQt5.QtWidgets import QPushButton, QWidget, QApplication, QHBoxLayout
  2. from PyQt5.QtCore import QObject
  3.  
  4.  
  5. class Button(QPushButton):
  6.  
  7.     def __init__(self, callback):
  8.         super(Button, self).__init__()
  9.  
  10.         self.setText("Hi")
  11.  
  12.         #1
  13.         self.clicked.connect(lambda: callback())
  14.  
  15.         #2
  16.         self.callback = callback
  17.         self.clicked.connect(self.callback)
  18.  
  19.  
  20. class Example(QObject):
  21.     def __init__(self):
  22.         super(Example, self).__init__()
  23.  
  24.         self.btn = Button(self.callback)
  25.  
  26.     def callback(self):
  27.         print("callback")
  28.  
  29.  
  30. class Widget(QWidget):
  31.     def __init__(self):
  32.         super(Widget, self).__init__()
  33.  
  34.         ex_ = Example()
  35.  
  36.         h_box = QHBoxLayout()
  37.  
  38.         h_box.addWidget(ex_.btn)
  39.  
  40.         self.setLayout(h_box)
  41.  
  42.         self.show()
  43.  
  44.  
  45. if __name__ == "__main__":
  46.     import sys
  47.  
  48.  
  49.     app = QApplication(sys.argv)
  50.     wd = Widget()
  51.     sys.exit(app.exec_())
  52.  
  53.  
Runtime error #stdin #stdout #stderr 0.04s 63596KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
Traceback (most recent call last):
  File "prog.py", line 1, in <module>
    from PyQt5.QtWidgets import QPushButton, QWidget, QApplication, QHBoxLayout
ImportError: No module named PyQt5
https://ideone.com/9z4gg7
language:
Python (PyPy 2.7.13)
created:
3 years ago
visibility:
secret

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