The bezierCurveToNurbs command attempts to convert an existing NURBS curve to a Bezier curve.
Derived from mel command maya.cmds.bezierCurveToNurbs
Example:
import pymel.core as pm
import maya.cmds as cmds
pm.bezierCurveToNurbs( )
# Result: [] #
# Converts call selected Bezier curves to NURBS curves.