[Pythonmac-SIG] Duplicate items in a list
Andres Corrada
andres@corrada.com
Mon, 09 Aug 1999 09:24:12 -0400
Hi Pieter,
I won't vouch for my understanding and use of the copy module, but here is
some code that deletes duplicates from a list (not tuple):
import copy
def DeleteDuplicates( list ):
if len( list ) <= 1:
return copy.copy( list )
else:
return ListJoin( [ list[ 0 ] ],
RemoveAll( list[ 0 ], DeleteDuplicates( list[ 1: ] ) ) )
def ListJoin( listA, listB ):
returnList = []
for i in range( len( listA ) ):
returnList.append( listA[ i ] )
for i in range( len( listB ) ):
returnList.append( listB[ i ] )
return returnList
def RemoveAll( objectToRemove, list ):
returnList = copy.copy( list )
while 1:
try:
returnList.remove( objectToRemove )
except:
break
return returnList
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Andres Corrada-Emmanuel Email: andres@corrada.com
Owner http://www.corrada.com/mamey
Mamey Phone: (413) 587-9595
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