pyqt5 pyside2

Direct import ui

from PySide2.QtUiTools import QUiLoader
import sys
from PyQt5.QtWidgets import QApplication

ui_file = QFile("test.ui")
ui_file.open(QFile.ReadOnly)

app = QApplication(sys.argv)
loader = QUiLoader()
window = loader.load(ui_file)
window.show()
sys.exit(app.exec_())

Show interactive pictures

from PySide2.QtGui import QImage, QPixmap
from PySide2.QtUiTools import QUiLoader
from PyQt5.QtWidgets import QApplication, QGraphicsView
from PySide2.QtWidgets import QGraphicsScene, QGraphicsPixmapItem
import sys
import cv2 as cv

app = QApplication(sys.argv)
map = QUiLoader().load('test.ui')
'''  Start introducing pictures to create scenes  '''

pix = QPixmap('school.jpg')
#  Create pixel primitives 
item = QGraphicsPixmapItem(pix)
scene = QGraphicsScene()
scene.addItem(item)
map.show_school.setScene(scene)

map.show()
sys.exit(app.exec_())

Obtain the coordinates of image points and mark them in the image

Mainly want to change the mouse cursor style , After selecting a point, the mouse cursor style is restored and the position of the point is returned .
I have searched the Internet for a long time , Most of the posts you see are about rewriting classes , However, I don't know how to cook , Finally, I found the implementation method .

#  Set up scene
        pix = QPixmap('school.jpg')
        self.item = QGraphicsPixmapItem(pix)
        self.scene = QGraphicsScene()
        self.scene.addItem(self.item)
        self.img.show_school.setScene(self.scene)
        
   def find_begin(self):
   		#  Set the mouse cursor style 
        pix_begin = QPixmap('start.png')
        pix_begin = pix_begin.scaled(60, 60, QtCore.Qt.KeepAspectRatio)
        #  Set the focus position of the mouse cursor 
        cursor = QCursor(pix_begin, 30, 59)
        self.img.show_school.setCursor(cursor)
        #  Set mouse click events 
        self.item.mousePressEvent = self.get_start
        if self.if_find_start != -1:
            self.scene.removeItem(self.pix_begin)
        self.if_find_start = 1
    def get_start(self, event):
        if self.if_find_start == 1:
            self.if_find_start = 0
            pos = event.pos()
            self.start = (Node) (int(pos.x()//25), int(pos.y()//25), 0, 0, None)
            pix_begin = QPixmap('start.png')
            pix_begin = pix_begin.scaled(60, 60, QtCore.Qt.KeepAspectRatio)
            self.pix_begin = QGraphicsPixmapItem(pix_begin)
            self.pix_begin.setPos(pos.x()-30, pos.y()-59)
            self.scene.addItem(self.pix_begin)
            #  Restore the mouse cursor to the original arrow cursor 
            self.img.show_school.setCursor(Qt.ArrowCursor)

Nice style

There are two that can be referenced python Style sheets in the library
Click to see
One more dalao Handwritten super nice pages
Click to see