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python Programming Glossary: attrgetterPython dict.setdefault uses more memory? [closed] http://stackoverflow.com/questions/11982368/python-dict-setdefault-uses-more-memory this from itertools import groupby from operator import attrgetter values name list elements for name elements in groupby elements.. name list elements for name elements in groupby elements attrgetter 'name' That takes advantage of the ordering and simplifies everything..
Pythonic way to sorting list of namedtuples by field name http://stackoverflow.com/questions/12087905/pythonic-way-to-sorting-list-of-namedtuples-by-field-name names share improve this question from operator import attrgetter from collections import namedtuple Person namedtuple 'Person'.. age 25 score 200 # sort list by name print sorted seq key attrgetter 'name' # sort list by age print sorted seq key attrgetter 'age'..
Python's list comprehension vs .NET LINQ http://stackoverflow.com/questions/3925093/pythons-list-comprehension-vs-net-linq .append item return groups Example from operator import attrgetter group_by x.foo for x in ... attrgetter 'bar' defaultdict class.. operator import attrgetter group_by x.foo for x in ... attrgetter 'bar' defaultdict class 'list' some_value_of_bar x.foo of all.. sorted x 2 for x in range 10 or sorted x for x in xs key attrgetter 'foo' . Sorted ascending by default the keyword argument reverse..
What method attributes are used in Django? http://stackoverflow.com/questions/7337681/what-method-attributes-are-used-in-django or methods that you're writing from operator import attrgetter def add x y return x y def subtract x y return x y def get_attribute_value.. x y return x y def get_attribute_value obj attr return attrgetter attr obj add.takes_args True add.number_of_args 2 add.type_of_args..
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