Python PyQt5实战项目之文件拷贝器的具体实现详解

def ui_init(self):
        '''
        界面的函数
        '''
        self.setWindowTitle('拷贝器')
        self.resize(600,400)
        self.setMinimumSize(600,400) # 设置窗口的最小值

        '''控件'''
        self.root_btn = QPushButton()
        self.copy_btn = QPushButton()
        self.start_btn = QPushButton()
        self.root_text = QTextBrowser()
        self.copy_text = QTextBrowser()
        self.log = QTextBrowser()
        self.h1_layout = QHBoxLayout()
        self.h2_layout = QHBoxLayout()
        self.h3_layout = QHBoxLayout()
        self.v_layout = QVBoxLayout()
        self.progerss =QProgressBar()
        self.finish_sound = QSound(':resource/finish.wav') # 设置提示音

        '''控件设置'''
        self.root_btn.setText('选择文件夹')
        self.root_btn.setFixedSize(150,30)
        self.copy_btn.setText('选择拷贝路径')
        self.copy_btn.setFixedSize(150,30) 
        self.start_btn.setText('开始')
        self.start_btn.setFixedSize(50,30)
        self.root_text.setFixedHeight(27)
        self.copy_text.setFixedHeight(27)
        self.progerss.setValue(0)

        '''控件摆放'''
        self.h1_layout.addWidget(self.root_text)
        self.h1_layout.addWidget(self.root_btn)
        self.h2_layout.addWidget(self.copy_text)
        self.h2_layout.addWidget(self.copy_btn)
        self.h3_layout.addWidget(self.progerss)
        self.h3_layout.addWidget(self.start_btn)
        self.v_layout.addLayout(self.h1_layout)
        self.v_layout.addLayout(self.h2_layout)
        self.v_layout.addWidget(self.log)
        self.v_layout.addLayout(self.h3_layout)
        self.setLayout(self.v_layout)

<RCC>
	<qresource prefix ="resource/">
		<file alias="finish.wav">resource/finish.wav</file>
	</qresource>
</RCC>

def variates_init(self):
        '''
        储存变量的函数
        '''
        self.root_path = '' # 要拷贝的路径
        self.copy_path = '' # 要拷贝到的路径
        self.file_list = [] # 文件名集合
        self.len = 0 # 文件夹下文件数量

def copy_file(self):
        '''
        拷贝文件的函数
        '''
        count = 0 # 临时设置进度条数值
        self.progerss.setRange(0,self.len) # 设置进度条的数值
        self.progerss.setValue(0) # 设置进度条初始值

        '''拷贝器主逻辑'''
        for file in self.file_list:
            root_path = self.root_path + "/" + file
            copy_path = self.copy_path + "/" + file

            with open(root_path, "rb") as root_file:
                with open(copy_path, "wb") as copy_file:
                    while True:
                        data = root_file.read(1024)
                        if data:
                            copy_file.write(data)
                        else:
                            count += 1 
                            self.progerss.setValue(count)
                            break


    def dir_file(self):
        '''
        遍历目录的函数
        '''
        filelist = os.listdir(self.root_path)
        self.file_list = filelist

    def len_file(self):
        '''
        文件数量的函数
        '''
        self.len=len(self.file_list)

def connect_init(self):
        '''
        信号与槽连接的函数
        '''
        self.root_btn.clicked.connect(lambda:self.btn_slot())
        self.copy_btn.clicked.connect(lambda:self.btn_slot())
        self.start_btn.clicked.connect(self.start_slot)

    def start_slot(self):
        '''
        开始按键的槽函数
        '''
        self.root_btn.setEnabled(False)
        self.copy_btn.setEnabled(False)
        self.start_btn.setEnabled(False)
        self.dir_file() # 遍历指定文件夹下的文件并添加到self.file_list集合中
        self.len_file() # 获取文件夹下文件数量
        self.copy_file() # 开始拷贝文件
        self.log.append('拷贝成功！')
        self.finish_sound.play() # 播放完成后的提示音

    def btn_slot(self):
        '''
        上面两个按键的槽函数
        '''
        btn = self.sender() 
        if btn == self.root_btn:
            directory = QFileDialog.getExistingDirectory(None,"选取文件夹","C:/")
            if directory:
                self.root_text.setText(directory)
                self.root_path = directory
                self.log.append('选择文件成功！')
        elif btn == self.copy_btn:
            directory = QFileDialog.getExistingDirectory(None,"选取拷贝位置","C:/")
            if directory:
                self.copy_text.setText(directory)
                self.copy_path = directory
                self.log.append('选取拷贝位置成功！')