Example of how to set up a widget that replicates a Maya attrFieldSliderGrp

pyqt_attrFieldSliderGrp.py

class AttrFieldGroup(QtGui.QWidget):
	"""
	AttrFieldGroup

	Resembles a attrFieldSliderGrp widget in the Maya UI.
	This is a basic example. You could go further in setting
	up a common setRange() to configure both the text input and
	the slider together.
	"""

	# custom signal for when any value changes
	valueChanged = QtCore.pyqtSignal(float)

	def __init__(self, parent=None):
		super(AttrFieldGroup, self).__init__(parent)

		self.layout = QtGui.QHBoxLayout(self)

		# You could create a self.setTextLabel() method
		self.text = QtGui.QLabel("Label:")

		self.input = QtGui.QLineEdit()
		self.input.setFixedWidth(50)
		
		# you could configure the range on this validator
		self.inputValidator = QtGui.QDoubleValidator()
		self.inputValidator.setDecimals(3)
		self.input.setValidator(self.inputValidator)

		self.slider = QtGui.QSlider()
		self.slider.setOrientation(QtCore.Qt.Horizontal)
		# range could be set from a self.setRange() method
		self.slider.setRange(0, 100)

		self.layout.addWidget(self.text)
		self.layout.addWidget(self.input)
		self.layout.addWidget(self.slider)

		self.slider.sliderMoved.connect(self.sliderMoved)
		self.input.editingFinished.connect(self.fieldEdited)

		self.setValue(0)

	def value(self):
		return float(self.input.text())

	def setValue(self, v):
		self.input.setText("%0.3f" % float(v))
		self.fieldEdited()

	def sliderMoved(self, val):
		self.input.setText('%0.3f' % (val / 100.0))

		self._emitValueChanged()

	def fieldEdited(self):
		val = float(self.input.text())*100
		self.slider.setValue(int(val))

		self._emitValueChanged()

	def _emitValueChanged(self):
		self.valueChanged.emit(float(self.input.text()))