PyQt5 Learning from

Reference link ：https://blog.csdn.net/AzureMouse/article/details/90338961

install PyQt5

1. Use pip download PyQt5

   pip install PyQt5
   pip install pyqt5-tools
   

2. win+s, Search for designer
3. Verify that the installation was successful

    The input terminal pyuic5
   Output “Error: one input ui-file must be specified”, Successful installation
   

PyQt Based on learning
1.main window Create main window
2.Widget Box Free drag components
3. Based on learning

1. To add text Label

2. Add a button PushButton

3. Modify the window title windowTitle

4. preview Form > Preview / Preview in

5. preservation

6. Generate python Code

    Use cmd Cut the directory to D Disk and execute the following command . Please send the following command to name Replace with file name
   1.cd /d D:\AI\PyMyWork\UI
   2.pyuic5 -o name.py name.ui
   

7. function Python Code

    You need to re create a main.py The program is run by .ui Converted .py file
   import sys
   from PyQt5.QtWidgets import QApplication, QMainWindow
   import gui_file_name
   if __name__ == '__main__':
   app = QApplication(sys.argv)
   MainWindow = QMainWindow()
   ui = gui_file_name.Ui_MainWindow()
   ui.setupUi(MainWindow)
   MainWindow.show()
   sys.exit(app.exec_())
   

   Function is introduced
   1. The use of buttons PushButton

   1. Get button's ID
      ObjectName：PushButton

   2. Set trigger

       Directly in “main.py” in “MainWindow.show()” Add the following line of code after
      

      ui.pushButton.clicked.connect(click_success)

      # pushButton It is the button just obtained id
      # clicked It's a signal , Because it's clicking , So we use clicked
      # click_success It corresponds to the slot to be called , Note that the function here is not written as click_success()
      

   3. Set function
      stay main.py Define a click_success, Used to trigger buttons

   4. function
      The console will display the results

8. Generate executable files (.exe)
   pip install pyinstaller
   Open... After installation CMD then cd To the folder where the program is located , Input
   pyinstaller -F -w main.py

   # Find... In the folder where the code is located dist Folder , In this folder exe Software , Double click to open it .
   # In command -w It means ： Direct release exe Application with command line debugging window , Add... To the instruction -w Commands can be masked
   # In command -F It means ： Use -F Instructions can package an application into a separate exe file , Otherwise it's one with all kinds of dll And folders that depend on files
   

4. Case study 1：GUI Exchange rate converter

1. Design ui
2. The ginseng
   One is to use lambda, One is to use functool.partial
   partial The usage of is as follows ：
   partial(function, arg1, arg2, ......)
   To be in the program （main.py） Add the following line to the head of the
   from functools import partial
   The line of code that triggers the button is modified as shown below ：
   ui.pushButton.clicked.connect(partial(convert, ui))
3. To write convert function

   def convert(ui):
   input = ui.lineEdit.text()
   result = float(input) * 6.7
   ui.lineEdit_2.setText(str(result))
   

5. Related learning Links

1. https://www.jianshu.com/p/4993f37b43e6
2. https://zhuanlan.zhihu.com/p/95624918
3. https://www.cnblogs.com/wojianxin/p/12629085.html

6. Use it directly pycharm convert to python Program
https://www.py.cn/jishu/gaoji/18503.html