learning python 6th edition pdf

a success to see when the value2 is assigned. In the same way, we can use __setattr__ to prevent subsequent assignments of properties that are already in the class: classGet_try ():def__init__(Self, value):Self. value=valuedef__getattr__(Self, item): Self. Value=itemdef__getattribute__(Self, item):PrintItemdef__setattr__(Self, key, value):offKeyinchSelf.__dict__: Print ' already exist 'else :self. __dict__[Key]=valueif __name__ = = "__main__":G=get_try (' value ')G.value=4g.value1=3Print

Code:# Jigsaw Puzzle fromsysimportexitfromrandomimportshuffle# game Victory def Victory (): print ("' ******666**victory* *!!!!! ****** ") # definition maindefmain (): boxs= [' ', ' 1 ', ' 2 ', ' 3 ', ' 4 ', ' 5 ', ' 6 ', ' 7 ', ' 8 ']shuffle (boxs) whiletrue:boxs_num=boxs print ("' ******%s%s%s**%s %s%s**%s%s%s****** ' %tuple (boxs_num)) ins =input (' Please enter the number to be moved, (0 exit game) \> ') Ifins== ' 0 ': exit () kong_index=boxs_num.index (' ') num_index=boxs_num.index (