runtime error in pymel

Question

import maya.cmds as cm
import random as random

myList = cm.ls (sl = True)

class MovingObjects:
    def up(*arg):
        for objects in myList:
        cm.move(0,0.5,0 ,r = True)
    def down(*arg):
        for objects in myList:
            cm.move(0,-0.5,0 ,r = True)

class microMove(MovingObjects):
    def microUp(*arg):
        cm.move(0,0.1,0 , r = True)
    def microDown(*arg):
        cm.move(0,-0.1,0 , r = True)                   

class declare:
    def transformDeclare(*arg):
        for objects in myList:
            print('%s'%objects)         
            print(cm.getAttr('%s.translateX'%objects))
            print(cm.getAttr('%s.translateY'%objects))
            print(cm.getAttr('%s.translateZ'%objects))

class randomTransform:
    def Randomize(*arg):
        for objects in myList:
            cm.xform('%s'%objects , ws=True,t=[random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)])



M = MovingObjects()
D = declare()
mM = microMove()
RT = randomTransform()


cm.headsUpMessage('First: "please select objects"', verticalOffset=300)


cm.window(t = 'X-transform' , h = 150 , w = 500 , s = False)
cm.columnLayout()


cm.button(l = 'Up' , c = M.up , w = 300 , h = 50 , bgc = (0,0.7,0.7) )
cm.button(l = 'micro-Up' , c = mM.microUp , w = 300 , bgc = (0,1,1))
cm.button(l = 'micro-Down' , c = mM.microDown , w = 300 , bgc = (0,1,1))
cm.button(l = 'Down' , c = M.down , w = 300 , h = 50 , bgc = (0,0.7,0.7) )

cm.button(l = 'Randomizing-objects-transform' , h = 50 , w = 300 , c = RT.Randomize , bgc = (0.8,0.8,0))

cm.button(l = 'Transformation-info' , c = D.transformDeclare , w = 300 , h = 50  )


cm.text( label='Script by : Amin-khormaei', align='center' )

cm.showWindow()

cm.error('Hey dude.. this is it') 

hey guys i have two questions 4 ya ?

1: the last line cm.error('X') gets me a runtime error

2: class declare works just just for first time that i run it, when i wanna get the refresh transformation info i should run the script again

please help duuuudes.

best regards.

Answer 1

The last line always give you an error (for more information, plz refer this link http://download.autodesk.com/global/docs/maya2013/en_us/CommandsPython/error.html)