Sorry, another simple question
Randall Hopper
aa8vb at yahoo.com
Thu May 20 10:52:16 EDT 1999
Joseph Kuan:
| How to derive the range function for a particular class?
|
|I tried with __range__ but it doesn't work.
Joseph, do you want to do something like this?
mylist = MyList()
for element in mylist:
...
Or something like this:
mylist = MyList()
print mylist[5:10]
If the former, __getitem__ is the method you need. It's called with
successively increasing index values in the for loop until an IndexError
exception is triggered (IIRC):
http://www.python.org/doc/current/ref/sequence-types.html
If the latter, look at __getslice__:
http://www.python.org/doc/current/ref/sequence-methods.html
Randall
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