北京做环评备案的网站企业策划书怎么写

目录

前置：

代码：

视频： 

---

前置：

1 本系列将以 “PyQt6实例_批量下载pdf工具”开头，放在 【PyQt6实例】 专栏
2 本系列涉及到的PyQt6知识点：
线程池：QThreadPool,QRunnable；
信号与槽：pyqtSignal,pyqtSlot；
界面：QTextEdit,QLabel,QLineText,QPushButton,QMainWindow,QWidget;
布局：QHBoxLayout,QVBoxLayout;
弹框：QFileDialog,QMessageBox。
3 本系列后续会在B站录制视频，到时会在文末贴出链接。本人还是建议先看博文，不懂的再看视频，这样效率高，节约时间。

代码：

from datetime import datetime
from PyQt6.QtCore import (
QSize,Qt
)
from PyQt6.QtWidgets import(
QApplication,
QMainWindow,
QLabel,
QLineEdit,
QPushButton,
QFileDialog,
QTextEdit,
QHBoxLayout,
QVBoxLayout,
QWidget
)class MainWindow(QMainWindow):def __init__(self):super().__init__()self.setWindowTitle('PDF Downloader')self.setMinimumSize(QSize(600,400))label1 = QLabel('存储pdf网址txt文件所在目录:')self.txtdir_lineedit = QLineEdit()self.choicedir_btn = QPushButton('打开目录')self.choicedir_btn.clicked.connect(self.choicedir_btn_clicked)label2 = QLabel('设置下载后pdf存储目录：')self.savedir_lineedit = QLineEdit()self.savedir_btn = QPushButton('设置目录')self.savedir_btn.clicked.connect(self.savedir_btn_clicked)self.execute_btn = QPushButton('执行')self.execute_btn.clicked.connect(self.execute_btn_clicked)self.stop_btn = QPushButton('停止')self.stop_btn.clicked.connect(self.stop_btn_clicked)label3 = QLabel('运行日志：')label4 = QLabel('其他信息：')self.excutelog_textedit = QTextEdit()self.excutelog_textedit.setReadOnly(True)self.otherlog_textedit = QTextEdit()self.otherlog_textedit.setReadOnly(True)layout0 = QHBoxLayout()layout0.addWidget(label1)layout0.addWidget(self.txtdir_lineedit)layout0.addWidget(self.choicedir_btn)layout1 = QHBoxLayout()layout1.addWidget(label2)layout1.addWidget(self.savedir_lineedit)layout1.addWidget(self.savedir_btn)layout2 = QHBoxLayout()layout2.addWidget(self.execute_btn)layout2.addWidget(self.stop_btn)layout3 = QVBoxLayout()layout3.addWidget(label3)layout3.addWidget(self.excutelog_textedit)layout4 = QVBoxLayout()layout4.addWidget(label4)layout4.addWidget(self.otherlog_textedit)layout5 = QHBoxLayout()layout5.addLayout(layout3)layout5.addLayout(layout4)layout = QVBoxLayout()layout.addLayout(layout0)layout.addLayout(layout1)layout.addLayout(layout2)layout.addLayout(layout5)widget = QWidget()widget.setLayout(layout)self.setCentralWidget(widget)passdef choicedir_btn_clicked(self):dir_name = QFileDialog.getExistingDirectory(self,"打开存储pdf网址txt文件所在目录")if dir_name:self.txtdir_lineedit.setText(dir_name)passdef savedir_btn_clicked(self):dir_name = QFileDialog.getExistingDirectory(self, "指定下载后pdf存储的目录")if dir_name:self.savedir_lineedit.setText(dir_name)passdef execute_btn_clicked(self):passdef stop_btn_clicked(self):passdef insert_executelog(self,msg:str):pre_str = f"{datetime.now().strftime('%Y-%m-%d %H:%M:%S')} {msg}"self.excutelog_textedit.append(pre_str)passdef insert_otherlog(self,msg:str):pre_str = f"{datetime.now().strftime('%Y-%m-%d %H:%M:%S')} {msg}"self.otherlog_textedit.append(pre_str)passpassif __name__ == '__main__':app = QApplication([])window = MainWindow()window.show()app.exec()pass

视频： 

https://www.bilibili.com/video/BV1V2ZcYCE6N/
https://www.bilibili.com/video/BV1V2ZcYCELF/