其实使用pangu做文本格式标准化的业务代码在之前就实现了，主要能够将中文文本文档中的文字、标点符号等进行标准化。
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但是为了方便起来我们这里使用了Qt5将其做成了一个可以操作的页面应用，这样不熟悉python的朋友就可以不用写代码直接双击运行使用就OK了。
为了使文本格式的美化过程不影响主线程的使用，特地采用QThread子线程来专门的运行文本文档美化的业务过程，接下来还是采用pip的方式将所有需要的非标准模块安装一下。
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple pangupip install -i https://pypi.tuna.tsinghua.edu.cn/simple PyQt5将我们使用到的pyqt5应用制作模块以及业务模块pangu导入到我们的代码块中。
# It imports all the classes, attributes, and methods of the PyQt5.QtCore module into the global symbol table.from PyQt5.QtCore import *# It imports all the classes, attributes, and methods of the PyQt5.QtWidgets module into the global symbol table.from PyQt5.QtWidgets import QApplication, QWidget, QHBoxLayout, QVBoxLayout, QTextBrowser, QLineEdit, QPushButton, \ QFormLayout, QFileDialog# It imports all the classes, attributes, and methods of the PyQt5.QtGui module into the global symbol table.from PyQt5.QtGui import QIcon, QFont, QTextCursor# It imports the pangu module.import pangu# It imports the sys module.import sys# It imports the os module.import os为了减少python模块在打包时资源占用过多，打的exe应用程序的占用空间过大的情况，这次我们只导入了能够使用到的相关python类，这个小细节大家注意一下。
下面创建一个名称为PanGuUI的python类来实现对整个应用页面的开发，将页面的布局以及组件相关的部分写到这个类中。并且给页面组件绑定好相应的槽函数从而实现页面的’点击’等功能。
# It creates a class called PanGuUI that inherits from QWidget.class PanGuUI(QWidget): def __init__(self): """ A constructor. It is called when an object is created from a class and it allows the class to initialize the attributes of a class. """ super(PanGuUI, self).__init__() self.init_ui() def init_ui(self): """ This function initializes the UI. """ self.setWindowTitle('文本文档美化器 公众号：Python 集中营') self.setWindowIcon(QIcon('txt.ico')) self.brower = QTextBrowser() self.brower.setFont(QFont('宋体', 8)) self.brower.setReadOnly(True) self.brower.setPlaceholderText('处理进程展示区域...') self.brower.ensureCursorVisible() self.txt_file_path = QLineEdit() self.txt_file_path.setPlaceholderText('源文本文档路径') self.txt_file_path.setReadOnly(True) self.txt_file_path_btn = QPushButton() self.txt_file_path_btn.setText('导入') self.txt_file_path_btn.clicked.connect(self.txt_file_path_btn_click) self.new_txt_file_path = QLineEdit() self.new_txt_file_path.setPlaceholderText('新文本文档路径') self.new_txt_file_path.setReadOnly(True) self.new_txt_file_path_btn = QPushButton() self.new_txt_file_path_btn.setText('路径') self.new_txt_file_path_btn.clicked.connect(self.new_txt_file_path_btn_click) self.start_btn = QPushButton() self.start_btn.setText('开始导入') self.start_btn.clicked.connect(self.start_btn_click) hbox = QHBoxLayout() hbox.addWidget(self.brower) fbox = QFormLayout() fbox.addRow(self.txt_file_path, self.txt_file_path_btn) fbox.addRow(self.new_txt_file_path, self.new_txt_file_path_btn) v_vbox = QVBoxLayout() v_vbox.addWidget(self.start_btn) vbox = QVBoxLayout() vbox.addLayout(fbox) vbox.addLayout(v_vbox) hbox.addLayout(vbox) self.thread_ = PanGuThread(self) self.thread_.message.connect(self.show_message) self.thread_.finished.connect(self.finshed) self.setLayout(hbox) def show_message(self, text): """ It shows a message :param text: The text to be displayed """ cursor = self.brower.textCursor() cursor.movePosition(QTextCursor.End) self.brower.append(text) self.brower.setTextCursor(cursor) self.brower.ensureCursorVisible() def txt_file_path_btn_click(self): """ It opens a file dialog box and allows the user to select a file. """ txt_file = QFileDialog.getOpenFileName(self, os.getcwd(), '打开文本文档', 'Text File(*.txt)') self.txt_file_path.setText(txt_file[0]) def new_txt_file_path_btn_click(self): """ This function opens a file dialog box and allows the user to select a file to save the output to. """ new_txt_file = QFileDialog.getOpenFileName(self, os.getcwd(), '打开文本文档', 'Text File(*.txt)') self.new_txt_file_path.setText(new_txt_file[0]) def start_btn_click(self): """ A function that is called when the start button is clicked. """ self.thread_.start() self.start_btn.setEnabled(False) def finshed(self, finished): """ :param finished: A boolean value that is True if the download is finished, False otherwise """ if finished is True: self.start_btn.setEnabled(True)创建名称为PanGuThread的子线程，将具体实现美化格式化文本字符串的业务代码块写入到子线程中。子线程继承的是QThread的PyQt5的线程类，通过创建子线程并且将子线程的信号信息传递到主线程中，在主线程的文本浏览器中进行展示达到实时跟踪执行结果的效果。
# This class is a subclass of QThread, and it's used to split the text into wordsclass PanGuThread(QThread): message = pyqtSignal(str) finished = pyqtSignal(bool) def __init__(self, parent=None): """ A constructor that initializes the class. :param parent: The parent widget """ super(PanGuThread, self).__init__(parent) self.working = True self.parent = parent def __del__(self): """ A destructor. It is called when the object is destroyed. """ self.working = True self.wait() def run(self) -> None: """ > This function runs the program """ try: txt_file_path = self.parent.txt_file_path.text().strip() self.message.emit('源文件路径信息读取正常！') new_txt_file_path = self.parent.new_txt_file_path.text().strip() self.message.emit('新文件路径信息读取正常！') list_ = [] with open(txt_file_path, encoding='utf-8') as f: lines_ = f.readlines() self.message.emit('源文件内容读取完成！') n = 1 for line_ in lines_: text = pangu.spacing_text(line_) self.message.emit('第{0}行文档内容格式化完成！'.format(n)) list_.append(text) n = n + 1 self.message.emit('源文件路径信息格式化完成！') self.message.emit('即将开始将格式化内容写入新文件！') with open(new_txt_file_path, 'a') as f: for line_ in list_: f.write(line_ + '\n') self.message.emit('新文件内容写入完成！') self.finished.emit(True) except Exception as e: self.message.emit('文件内容读取或格式化发生异常！')if __name__ == '__main__': app = QApplication(sys.argv) main = PanGuUI() main.show() sys.exit(app.exec_())完成了开发开始测试一下效果如何，创建了两个文本文件data.txt、new_data.txt，点击’开始运行’之后会调起整个的业务子线程实现文本格式化，结果完美运行来看一下执行过程展示。
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