How to pass LineEdit data to label?

Question

Python

We need to pass the LineEdit value to the Label in real time without pressing any buttons.

Answer 1

without pressing any buttons.

I wonder how you will change the contents of the LineEdit, telepathically? ¯\_(ツ)_/¯
If I understand correctly, you need to react to text editing in LineEdit, and output text from it to the label:

import sys
from PySide2.QtCore import Qt
from PySide2.QtWidgets import (QApplication, QWidget,
    QPushButton, QLabel, QVBoxLayout, QLineEdit)
 
 
class MyWidget(QWidget):
    def __init__(self):
        QWidget.__init__(self)

        self.my_label = QLabel()
        self.line_edit = QLineEdit()
        self.my_label.setAlignment(Qt.AlignCenter)
        
        self.layout = QVBoxLayout()
        self.layout.addWidget(self.my_label)
        self.layout.addWidget(self.line_edit)
        self.setLayout(self.layout)

        self.line_edit.textChanged.connect(self.magic) # Реагируем на события изменения текста
    
    def magic(self):
        self.my_label.setText(self.line_edit.text()) # Выводим в label текст из lineedit
 
if __name__ == "__main__":
    app = QApplication(sys.argv)
    widget = MyWidget()
    widget.resize(200, 150)
    widget.show()
    sys.exit(app.exec_())