Revision: 699
Updated Code
at July 31, 2006 20:12 by newtonapple
Updated Code
def partition(iterable, func):
result = {}
for i in iterable:
result.setdefault(func(i), []).append(i)
return result
def group(seq):
result = {}
for item, category in seq:
result.setdefault(category, []).append(item)
return result
# def is_odd(n):
# return (n%2) == 1
# l = range(100)
# print partition(l, is_odd)
# print group( (item, is_odd(item)) for item in l)
# print group( (item, item%11) for item in l) # no need to use lamda/def
Revision: 698
Initial Code
Initial URL
Initial Description
Initial Title
Initial Tags
Initial Language
at July 31, 2006 20:08 by newtonapple
Initial Code
def partition(iterable, func):
result = {}
for i in iterable:
result.setdefault(func(i), []).append(i)
return result
def group(seq):
result = {}
for item, category in seq:
result.setdefault(category, []).append(item)
return result
Initial URL
Initial Description
Initial Title
Partitioning a sequence into a dictionary keyed by function values
Initial Tags
list, python, function
Initial Language
Python