title: How do I align centre image on QLabel in PyQt5?
body: <p>I am currently doing some basic excerises. I'm trying to rewrite some application in which I used tkinter to do the same with PyQt5. Everything works apart from one problem - I have a QLabel containing image and I'm trying to align the image in the center of label but it doesn't want to, image stays aligned to the left. Code below:</p>
  <pre><code>from PyQt5.QtWidgets import QApplication, QLabel, QWidget, QVBoxLayout, QPushButton, QFileDialog
  from PyQt5.QtCore import Qt
  from PyQt5.QtGui import QIcon, QPixmap
  
  app=QApplication([])
  window=QWidget()
  window.setFixedSize(500,500)
  
  layout=QVBoxLayout()
  
  label_img=QLabel()
  label_img.setFixedSize(300, 300)
  label_img.setAlignment(Qt.AlignCenter)
  image = QFileDialog.getOpenFileName(None,'Select file','D:\_Download', &quot;Image files(*.png *.jpg *.jpeg *.gif)&quot;)
  imagePath = image[0]
  pixmap = QPixmap(imagePath)
  pixmap.scaledToHeight(label_img.height(), Qt.SmoothTransformation)
  label_img.setPixmap(pixmap)
  layout.addWidget(label_img)
  
  window.setLayout(layout)
  window.show()
  app.setStyle('Fusion')
  app.exec_()
  </code></pre>
  <p>What am I doing wrong?</p>