Zviki Cohen zvikico
zvikico
/ gist:5805014
Created
June 18, 2013 12:40
This function will interleave results from multiple iterators, exhausting all iterators in the process (i.e. ignoring iterators that has no more value).
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| import itertools | |
| def iter_interleave(*args): | |
| iterators = [(x for x in it) for it in args] | |
| has_values = [True for _ in xrange(len(iterators))] | |
| while max(has_values): | |
| for it, has_value, i in itertools.izip(iterators, has_values, xrange(len(iterators))): | |
| if has_value: | |
| try: | |
| value = it.next() |
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| class ReducingDict(dict): | |
| def __init__(self, function, initial = None): | |
| self._function = function | |
| self._initial = initial | |
| super(ReducingDict, self).__init__() | |
| def __setitem__(self, key, new_value): | |
| if key in self: |
zvikico
/ gist:2863226
Created
June 3, 2012 12:09
Reducing dict in Python - a dict that reduces values as they are entered
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| import copy | |
| class ReducingDict(dict): | |
| def __init__(self, function, initial = None): | |
| self._function = function | |
| self._initial = initial | |
| super(ReducingDict, self).__init__() | |
| def __setitem__(self, key, new_value): |