How to handle user input in PyQt5?

In PyQt5, there are several ways to handle user input:

1. Create a single-line text input box using the QLineEdit class, where users can input text. Retrieve the input text using the text() method.

from PyQt5.QtWidgets import QApplication, QLineEdit

# 创建一个应用程序对象
app = QApplication([])

# 创建一个单行文本输入框
line_edit = QLineEdit()
line_edit.show()

# 获取用户输入的文本内容
text = line_edit.text()

1. QTextEdit: Create a multi-line text input box using the QTextEdit class, where users can input text on multiple lines. Retrieve the user’s input text content using the toPlainText() method.

from PyQt5.QtWidgets import QApplication, QTextEdit

# 创建一个应用程序对象
app = QApplication([])

# 创建一个多行文本输入框
text_edit = QTextEdit()
text_edit.show()

# 获取用户输入的文本内容
text = text_edit.toPlainText()

1. Create a button using the QPushButton class that users can click to trigger an event. Use the clicked.connect() method to connect slots for handling user input.

from PyQt5.QtWidgets import QApplication, QPushButton

def handle_button_click():
    print("Button clicked")

# 创建一个应用程序对象
app = QApplication([])

# 创建一个按钮
button = QPushButton("Click me")
button.show()

# 连接按钮点击事件的槽函数
button.clicked.connect(handle_button_click)

These are several common ways to handle user input. Choose the appropriate method based on your specific needs.