"Grigor Kolev" <grigor.ko...@gmail.com> wrote
---------------------------------------------------- My answer is: class MyList (): def __init__(self, value=[]): self.list=[] for i in value: self.list.append(i) def __add__(self , other): return self.list def __mul__(self , other): return self .list def __delitem__(self , other): return self .list def __geritem__(self , other): return self.list def __repeat__(self , other): return self.list def sort(self ): self.list = self.list.sort() return self.list def append(self , other): self.list=self.list.append(other) return self.list This is work
Given that add does not add anything how do you define "work"? Do you mean it executes without error messages?
------------------------------------------------------ In the book answer is this: class MyList: def _ _init_ _(self, start): #self.wrapped = start[:] # Copy start: no side effects self.wrapped = [] # Make sure it's a list here for x in start: self.wrapped.append(x) def _ _add_ _(self, other): return MyList(self.wrapped + other) def _ _mul_ _(self, time): return MyList(self.wrapped * time) def _ _getitem_ _(self, offset): return self.wrapped[offset] def _ _len_ _(self): return len(self.wrapped) def _ _getslice_ _(self, low, high): return MyList(self.wrapped[low:high]) def append(self, node): self.wrapped.append(node) def _ _getattr_ _(self, name): # Other members: sort/reverse/etc return getattr(self.wrapped, name) def _ _repr_ _(self): return repr(self.wrapped) Answer in the book does not work Where is the error
What error do you get? These merthods do entirely different things to yours. But without an error description its hard to comment, I don't feel like reading through line buy line trying to guess what the problem might be. It will also help if you tell us which version of Python you are using and which Operating System. -- Alan Gauld Author of the Learn to Program web site http://www.alan-g.me.uk/ _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor