pyqt拖拽获取文件路径

main.py

import sys
import PyQt5.QtWidgets as qw
from mainwindow import Ui_MainWindow

class TestWindow(qw.QMainWindow):
    def __init__(self):
        super().__init__()
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)
        self.setAcceptDrops(True)

    def dragEnterEvent(self, evn):
        print('鼠标拖入窗口')
        # self.QLabl.setText('文件路径：\n' + evn.mimeData().text())
        # 鼠标放开函数事件
        evn.accept()

    def dropEvent(self, evn):
        print(f'鼠标放开 {evn.posF()}')
        path = evn.mimeData().text()
        if self.ui.lineEdit_1.hasFocus():
            self.ui.lineEdit_1.setText(path)
        elif self.ui.lineEdit_2.hasFocus():
            self.ui.lineEdit_2.setText(path)
        elif self.ui.lineEdit_3.hasFocus():
            self.ui.lineEdit_3.setText(path)
        else:
            print('文件路径：\n' + path)

    def dragMoveEvent(self, evn):
        pass
        # print('鼠标移动')

if __name__ == '__main__':
    app = qw.QApplication(sys.argv)
    w = TestWindow()
    w.show()
    sys.exit(app.exec_())

mainwindow.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'mainwindow.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.


from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(612, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.verticalLayout = QtWidgets.QVBoxLayout(self.centralwidget)
        self.verticalLayout.setObjectName("verticalLayout")
        self.horizontalLayout = QtWidgets.QHBoxLayout()
        self.horizontalLayout.setObjectName("horizontalLayout")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setObjectName("label")
        self.horizontalLayout.addWidget(self.label)
        self.lineEdit_1 = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit_1.setObjectName("lineEdit_1")
        self.horizontalLayout.addWidget(self.lineEdit_1)
        self.verticalLayout.addLayout(self.horizontalLayout)
        self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
        self.label_2 = QtWidgets.QLabel(self.centralwidget)
        self.label_2.setObjectName("label_2")
        self.horizontalLayout_2.addWidget(self.label_2)
        self.lineEdit_2 = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit_2.setObjectName("lineEdit_2")
        self.horizontalLayout_2.addWidget(self.lineEdit_2)
        self.verticalLayout.addLayout(self.horizontalLayout_2)
        self.horizontalLayout_3 = QtWidgets.QHBoxLayout()
        self.horizontalLayout_3.setObjectName("horizontalLayout_3")
        self.label_3 = QtWidgets.QLabel(self.centralwidget)
        self.label_3.setObjectName("label_3")
        self.horizontalLayout_3.addWidget(self.label_3)
        self.lineEdit_3 = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit_3.setObjectName("lineEdit_3")
        self.horizontalLayout_3.addWidget(self.lineEdit_3)
        self.verticalLayout.addLayout(self.horizontalLayout_3)
        spacerItem = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
        self.verticalLayout.addItem(spacerItem)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 612, 23))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.label.setText(_translate("MainWindow", "测试输入框1"))
        self.label_2.setText(_translate("MainWindow", "测试输入框2"))
        self.label_3.setText(_translate("MainWindow", "测试输入框3"))