我正在为一个软件的GUI工作，该软件可以为不同的客户端自动输入数据，现在我正在实现第一个客户端称为加利西亚，我不能让浏览按钮工作，这是应该允许用户浏览一个文件，其中的数据存储在。目前它甚至没有真正的React作为一个按钮。（默认情况下，PyQt中的按钮在鼠标悬停时有一个蓝色的边框覆盖，甚至没有响应。
这是我的代码

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QComboBox, QPushButton
from PyQt5.QtGui import QIcon, QStandardItemModel, QStandardItem
from PyQt5.QtWidgets import (
    QApplication, QMainWindow, QWidget, QLabel, QLineEdit,
    QPushButton, QFileDialog, QProgressBar
)
from PyQt5.QtCore import Qt, QThread, pyqtSignal, QSize
from analysis import analyze

class WorkerThread(QThread):
    progress_changed = pyqtSignal(int)

    def run(self):
        # Here you can put your own code to be executed in the main loop
        for i in range(101):
            self.progress_changed.emit(i)
            self.msleep(50)

class GaliciaGUI(QWidget):
    def __init__(self):
        super().__init__()

        central_widget = QWidget(self)

        self.search_label = QLabel("Search for a file:", central_widget)
        self.search_label.setGeometry(50, 50, 170, 30)

        self.search_button = QPushButton("Browse", central_widget)
        self.search_button.setGeometry(50, 80, 80, 30)
        self.search_button.clicked.connect(self.browse_file)

        self.date_start = QLabel("Fecha:", central_widget)
        self.date_start.setGeometry(350, 50, 170, 30)

        self.date_start_input = QLineEdit(central_widget)
        self.date_start_input.setGeometry(350, 80, 250, 30)

        self.date_start_input = QLineEdit(central_widget)
        self.date_start_input.setGeometry(50, 150, 200, 30)
        self.date_start_input.setEchoMode(QLineEdit.Password)

        self.selected_file_label = QLabel("", central_widget)
        self.selected_file_label.setGeometry(50, 80, 300, 30)

        self.password_label = QLabel("Enter password:", central_widget)
        self.password_label.setGeometry(50, 120, 150, 30)

        self.password_input = QLineEdit(central_widget)
        self.password_input.setGeometry(50, 150, 200, 30)
        self.password_input.setEchoMode(QLineEdit.Password)

        self.start_button = QPushButton("Start", central_widget)
        self.start_button.setGeometry(50, 190, 80, 30)
        self.start_button.clicked.connect(self.start_main_loop)

        self.progress_bar = QProgressBar(central_widget)
        self.progress_bar.setGeometry(50, 230, 300, 30)
        self.progress_bar.setValue(0)

        self.status_label = QLabel("", central_widget)
        self.status_label.setGeometry(50, 250, 150, 30)

        self.file_path = None
        self.worker_thread = WorkerThread()
        self.worker_thread.progress_changed.connect(self.update_progress_bar)

    def browse_file(self):
        file_path, _ = QFileDialog.getOpenFileName(
            self, "Select a file", "", "All Files (*);;Text Files (*.txt)"
        )
        if file_path:
            self.selected_file_label.setText(f"Selected file: {file_path}")
            self.file_path = file_path

    def start_main_loop(self):
        password = self.password_input.text() or None
        if self.file_path:
            self.worker_thread.start()
            analyze(self.file_path, password)

    def update_progress_bar(self, value):
        self.progress_bar.setValue(value)
        if value == 100:
            self.status_label.setText("Success")

class LandingPage(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle('Client Selection')
        self.setGeometry(100, 100, 400, 300)
        
        self.client_label = QLabel('Select a client:', self)
        self.client_label.move(50, 50)
        
        self.client_dropdown = QComboBox(self)
        self.client_dropdown.addItems(['Galicia', 'Client 2', 'Client 3'])  # Add more clients here
        self.client_dropdown.move(150, 50)
        
        self.submit_button = QPushButton('Submit', self)
        self.submit_button.move(150, 100)
        self.submit_button.clicked.connect(self.open_gui)
        
        self.galicia_gui = None  # Initialize instance variable for GaliciaGUI
        
        self.show()
    
    def open_gui(self):
        client = self.client_dropdown.currentText()
        if client == 'Galicia':
            self.galicia_gui = GaliciaGUI()
            self.galicia_gui.setGeometry(100, 100, 700, 600)
            self.galicia_gui.activateWindow()
            self.galicia_gui.raise_()
            self.galicia_gui.show()
            app = QApplication.instance()
            app.setActiveWindow(self.galicia_gui)
        elif client == 'Client 2':
            # Open Client 2 GUI
            pass  # Replace client
        elif client == 'Client 3':
            # Open Client 3 GUI
            pass  # Replace with client
if __name__ == '__main__':
    app = QApplication(sys.argv)
    landing_page = LandingPage()
    app.exec_()

我试图实现一个按钮，它带来了文件资源管理器（这个软件是为windows），其中一个可以浏览所需的文件，然后说文件是通过分析功能输入到数据处理。