Curve mapping/parent

# Curve mapping/parent
from pymel.core import *
import math
def getPiv(s):
    select(s)
    setToolTo('Move')
    piv = manipMoveContext('Move', q=True, p=True,m=2)
    return piv
def getDist(p1,p2):
    dist = math.sqrt((p1[0] - p2[0])**2 + (p1[1] - p2[1])**2 + (p1[2] - p2[2])**2)
    return dist
def getMag(p1,p2):
    dist = ((p1[0] - p2[0])**2 + (p1[1] - p2[1])**2 + (p1[2] - p2[2])**2)
    return dist

sl = selected()
cvList = []
#for s in sl:
p1 = getPiv(sl[0])
p2 = getPiv(sl[1])
mag = getMag(p1,p2)
print mag