将QLineEdit文本转换为浮点-PySide / pyQt4

Question

How do I convert a number in a LineEdit widget to float?

Say I have:

textfield = QtGui.QLineEdit(self)

And the user inputs 12345.2 in it. I want that to be converted to a float and stored in a variable X. How do I do it?

I tried the code below, it doesn't work.

INPUT = textfield.text
INPUT2 = float(INPUT)

Answer 1

text is the name of the method. You should call it to get the text inside the QLineEdit .

INPUT = textfield.text()
INPUT2 = float(INPUT)

Answer 2

Try: INPUT2 = float(INPUT)

You have INPUT2 where you should have INPUT