hi new here (also this code is PySide2) . I'm trying to create a sudoku grid but my QFrame lines don't show up ( when i change the size of window some of them show up!!). i don't know how to fix this. i use the QFrame to create a separator but it doesn't work as intended.
Qt Code: 
  1. import sys
  2. from PySide2.QtWidgets import *
  3.  
  4. class SudokuGrid(QWidget):
  5.     def __init__(self):
  6.         super(SudokuGrid, self).__init__()
  7.         self.initGUI()
  8.  
  9.     def initGUI(self):
  10.         self.setWindowTitle("Sudoku Grid Example")
  11.         self.setGeometry(800, 800, 400, 350)
  12.         self.setGrid()
  13.  
  14.     def setGrid(self):
  15.         gridLayout = QGridLayout()
  16.         box1 = QGridLayout()
  17.         box2 = QGridLayout()
  18.         box3 = QGridLayout()
  19.         box4 = QGridLayout()
  20.         box5 = QGridLayout()
  21.         box6 = QGridLayout()
  22.         box7 = QGridLayout()
  23.         box8 = QGridLayout()
  24.         box9 = QGridLayout()
  25.  
  26.         hline = QFrame()
  27.         hline.setFrameShape(QFrame.HLine)
  28.         hline.setFrameShadow(QFrame.Sunken)
  29.  
  30.         vline = QFrame()
  31.         vline.setFrameShape(QFrame.VLine)
  32.         vline.setFrameShadow(QFrame.Sunken)
  33.  
  34.         gridLayout.addLayout(box1,0,0)
  35.         gridLayout.addWidget(vline, 0, 1)
  36.         gridLayout.addLayout(box2,0,2)
  37.         gridLayout.addWidget(vline, 0, 3)
  38.         gridLayout.addLayout(box3,0,4)
  39.         gridLayout.addWidget(hline, 1, 0, 1, 3)
  40.         gridLayout.addLayout(box4,2,0)
  41.         gridLayout.addWidget(vline, 2, 1)
  42.         gridLayout.addLayout(box5,2,2)
  43.         gridLayout.addWidget(vline, 2, 3)
  44.         gridLayout.addLayout(box6,2,4)
  45.         gridLayout.addWidget(hline, 3, 0, 1, 3)
  46.         gridLayout.addLayout(box7,4,0)
  47.         gridLayout.addWidget(vline, 4, 1)
  48.         gridLayout.addLayout(box8,4,2)
  49.         gridLayout.addWidget(vline, 4, 3)
  50.         gridLayout.addLayout(box9,4,4)
  51.  
  52.         pos = [(0,0),(0,1),(0,2),
  53.                (1,0),(1,1),(1,2),
  54.                (2,0),(2,1),(2,2)]
  55.  
  56.         i = 0
  57.         while i < 9:
  58.             box1.addWidget(QLabel("1"), pos[i][0], pos[i][1])
  59.             box2.addWidget(QLabel("1"), pos[i][0], pos[i][1])
  60.             box3.addWidget(QLabel("1"), pos[i][0], pos[i][1])
  61.             box4.addWidget(QLabel("1"), pos[i][0], pos[i][1])
  62.             box5.addWidget(QLabel("1"), pos[i][0], pos[i][1])
  63.             box6.addWidget(QLabel("1"), pos[i][0], pos[i][1])
  64.             box7.addWidget(QLabel("1"), pos[i][0], pos[i][1])
  65.             box8.addWidget(QLabel("1"), pos[i][0], pos[i][1])
  66.             box9.addWidget(QLabel("1"), pos[i][0], pos[i][1])
  67.             i = i + 1
  68.  
  69.  
  70.         self.setLayout(gridLayout)
  71.  
  72.  
  73.  
  74. if __name__ == '__main__':
  75.     try:
  76.         myApp = QApplication(sys.argv)
  77.         myWindow = SudokuGrid()
  78.         myWindow.show()
  79.         myApp.exec_()
  80.         sys.exit(0)
  81.     except NameError:
  82.         print("Name Error:", sys.exc_info()[1])
  83.     except SystemExit:
  84.         print("Closing Window...")
  85.     except Exception:
  86.         print(sys.exc_info()[1])
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