# 基礎安裝（推薦使用國內鏡像加速）
pip install pyqt5 pyqt5-tools -i https://pypi.tuna.tsinghua.edu.cn/simple
 
# Windows系統(tǒng)特殊處理
# 若遇到Microsoft Visual C++編譯錯誤，需安裝Build Tools
# 或直接下載預編譯的whl文件手動安裝
# 示例：下載PyQt5_sip-12.12.2-cp39-cp39-win_amd64.whl后執(zhí)行
pip install PyQt5_sip-12.12.2-cp39-cp39-win_amd64.whl

import sys
from PyQt5.QtWidgets import QApplication, QLabel, QWidget
 
app = QApplication(sys.argv)
window = QWidget()
window.setWindowTitle("PyQt環(huán)境測試")
QLabel("環(huán)境配置成功！", parent=window).move(50, 50)
window.resize(200, 150)
window.show()
sys.exit(app.exec_())

import sys
from PyQt5.QtWidgets import (QApplication, QWidget, QVBoxLayout,
                            QTextEdit, QPushButton, QLabel)
 
class TextTool(QWidget):
    def __init__(self):
        super().__init__()
        self.init_ui()
        
    def init_ui(self):
        self.setWindowTitle("文本處理工具")
        self.resize(500, 400)
        
        # 布局管理
        layout = QVBoxLayout()
        
        # 文本輸入?yún)^(qū)
        self.text_edit = QTextEdit()
        layout.addWidget(self.text_edit)
        
        # 按鈕組
        btn_layout = QHBoxLayout()
        self.btn_upper = QPushButton("轉大寫")
        self.btn_lower = QPushButton("轉小寫")
        self.btn_trim = QPushButton("清除空格")
        self.btn_count = QPushButton("統(tǒng)計信息")
        
        for btn in [self.btn_upper, self.btn_lower, 
                   self.btn_trim, self.btn_count]:
            btn_layout.addWidget(btn)
        layout.addLayout(btn_layout)
        
        # 狀態(tài)顯示
        self.status_label = QLabel("就緒")
        self.status_label.setStyleSheet("color: blue;")
        layout.addWidget(self.status_label)
        
        self.setLayout(layout)
        self.bind_events()
    
    def bind_events(self):
        self.btn_upper.clicked.connect(self.to_upper)
        self.btn_lower.clicked.connect(self.to_lower)
        self.btn_trim.clicked.connect(self.trim_spaces)
        self.btn_count.clicked.connect(self.count_words)
    
    # 功能實現(xiàn)（略）
    def to_upper(self): /*...*/
    def to_lower(self): /*...*/
    def trim_spaces(self): /*...*/
    def count_words(self): /*...*/
 
if __name__ == "__main__":
    app = QApplication(sys.argv)
    window = TextTool()
    window.show()
    sys.exit(app.exec_())

from PyQt5.QtWidgets import (QMainWindow, QTableWidget, 
                            QTableWidgetItem, QMessageBox)
 
class ContactManager(QMainWindow):
    def __init__(self):
        super().__init__()
        self.contacts = []
        self.init_ui()
        
    def init_ui(self):
        self.setWindowTitle("聯(lián)系人管理")
        self.resize(600, 400)
        
        # 表格控件
        self.table = QTableWidget()
        self.table.setColumnCount(3)
        self.table.setHorizontalHeaderLabels(["姓名", "電話", "操作"])
        self.setCentralWidget(self.table)
        
        # 右鍵菜單
        self.table.setContextMenuPolicy(Qt.CustomContextMenu)
        self.table.customContextMenuRequested.connect(self.show_context_menu)
    
    def add_contact(self):
        # 獲取輸入（需補充輸入對話框代碼）
        name = "張三"
        phone = "13800138000"
        
        row = self.table.rowCount()
        self.table.insertRow(row)
        self.table.setItem(row, 0, QTableWidgetItem(name))
        self.table.setItem(row, 1, QTableWidgetItem(phone))
        
        # 添加刪除按鈕
        del_btn = QPushButton("刪除")
        del_btn.clicked.connect(lambda: self.delete_contact(row))
        self.table.setCellWidget(row, 2, del_btn)
    
    def delete_contact(self, row):
        self.table.removeRow(row)
        # 更新后續(xù)行的刪除按鈕連接（需優(yōu)化）
 
    def show_context_menu(self, pos):
        menu = QMenu()
        delete_action = menu.addAction("刪除")
        delete_action.triggered.connect(self.context_delete)
        menu.exec_(self.table.viewport().mapToGlobal(pos))

pyuic5 main_window.ui -o ui_main.py

from PyQt5 import QtCore, QtGui, QtWidgets
 
class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        
        # 中央部件
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        
        # 布局和控件（自動生成）
        self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setObjectName("pushButton")
        
        # 菜單欄（示例）
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.file_menu = self.menubar.addMenu("文件")
        self.exit_action = QtWidgets.QAction("退出", self)
        self.file_menu.addAction(self.exit_action)
        
        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)
    
    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "設計界面"))
        self.pushButton.setText(_translate("MainWindow", "點擊我"))

class MainWindow(QMainWindow, Ui_MainWindow):
    def __init__(self):
        super().__init__()
        self.setupUi(self)  # 初始化設計界面
        self.bind_events()   # 綁定自定義事件
    
    def bind_events(self):
        self.pushButton.clicked.connect(self.on_button_click)
        self.exit_action.triggered.connect(self.close)
    
    def on_button_click(self):
        self.statusbar.showMessage("按鈕已點擊", 3000)

from PyQt5.QtCore import QThread, pyqtSignal
 
class WorkerThread(QThread):
    progress_signal = pyqtSignal(int)
    
    def run(self):
        for i in range(100):
            self.progress_signal.emit(i)
            self.msleep(50)
 
# 在主窗口中使用
def start_task(self):
    self.thread = WorkerThread()
    self.thread.progress_signal.connect(self.update_progress)
    self.thread.start()

from PyQt5.QtGui import QFontDatabase
 
def load_fonts():
    font_id = QFontDatabase.addApplicationFont(":/fonts/custom.ttf")
    if font_id != -1:
        font_family = QFontDatabase.applicationFontFamilies(font_id)[0]
        return QFont(font_family, 12)
    return QFont()

import os
from PyQt5.QtWidgets import (QApplication, QMainWindow, QListWidget,
                            QLabel, QVBoxLayout, QHBoxLayout)
from PyQt5.QtGui import QPixmap, QImage
from PyQt5.QtCore import Qt, QTimer
 
class ImageBrowser(QMainWindow):
    def __init__(self):
        super().__init__()
        self.image_dir = ""
        self.current_index = 0
        self.init_ui()
        
    def init_ui(self):
        self.setWindowTitle("圖片瀏覽器")
        self.resize(800, 600)
        
        # 主布局
        main_layout = QHBoxLayout()
        
        # 目錄列表
        self.dir_list = QListWidget()
        self.dir_list.itemClicked.connect(self.load_image)
        main_layout.addWidget(self.dir_list, 1)
        
        # 圖片顯示區(qū)
        self.image_label = QLabel()
        self.image_label.setAlignment(Qt.AlignCenter)
        self.image_label.setStyleSheet("background-color: black;")
        main_layout.addWidget(self.image_label, 3)
        
        # 控制面板
        control_layout = QVBoxLayout()
        # 添加按鈕等控件（略）
        
        central_widget = QWidget()
        central_widget.setLayout(main_layout)
        self.setCentralWidget(central_widget)
        
        # 加載示例目錄
        self.load_directory("C:/Pictures")
    
    def load_directory(self, path):
        self.image_dir = path
        self.dir_list.clear()
        
        # 獲取圖片文件
        image_files = [f for f in os.listdir(path) 
                      if f.lower().endswith(('.png', '.jpg', '.jpeg', '.bmp'))]
        
        for img in image_files:
            self.dir_list.addItem(img)
    
    def load_image(self, item):
        file_path = os.path.join(self.image_dir, item.text())
        pixmap = QPixmap(file_path)
        
        # 縮放圖片適應窗口
        scaled_pixmap = pixmap.scaled(
            self.image_label.width(), 
            self.image_label.height(),
            Qt.KeepAspectRatio,
            Qt.SmoothTransformation
        )
        self.image_label.setPixmap(scaled_pixmap)
 
if __name__ == "__main__":
    app = QApplication([])
    browser = ImageBrowser()
    browser.show()
    app.exec_()