I do not think I am understanding how to redefine the getitem function
for string. Why does the following not work:
class NStr(str):
def __getitem__(self,idx):
print "NStr:getitem",idx,type(idx)
return str.__getitem__(self,idx)
s=NStr("abcde")
print s[1]
print s[1:4:2]
print s[1:2]
if I run this program (python 2.5; Mac OSX) i get:
$ python strProb.py
NStr:getitem 1 <type 'int'>
b
NStr:getitem slice(1, 4, 2) <type 'slice'>
bd
b
ie the last statement (s[1:2]) with a simple slice does not call the
new __getitem__???? What am I missing.
Thanks
tom
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