from qtpy.QtGui import QDoubleValidator # Create a double validator object that accepts values between -10.0 and 10.0 double_validator = QDoubleValidator(-10.0, 10.0, 2) # Set the input range for a line edit widget line_edit.setValidator(double_validator)
from qtpy.QtGui import QDoubleValidator # Create a double validator object that accepts values between 0.0 and 100.0 double_validator = QDoubleValidator(0.0, 100.0, 2) # Set the input range for a line edit widget line_edit.setValidator(double_validator) # Retrieve the input value as a float input_value = line_edit.text() float_value = float(input_value)In this example, the QDoubleValidator object is created with a range of 0.0 to 100.0 and a precision of 2 decimal places. The validator object is then set as the input validator for a line edit widget. The input value entered into the widget is retrieved as a string using the `text()` method, and is then converted to a float using the `float()` function for further processing. The package library used in these examples is `qtpy.QtGui`.