python Programming Glossary: izip

http://stackoverflow.com/questions/1622943/timeit-versus-timing-decorator

# usr bin env python import time from itertools import izip from random import shuffle def timing_val func def wrapper arg.. t1 res func.func_name return wrapper @timing_val def time_izip alist n i iter alist return x for x in izip i n @timing_val.. def time_izip alist n i iter alist return x for x in izip i n @timing_val def time_indexing alist n return alist i i n..

how can I iterate through two lists in parallel in Python? [duplicate]

http://stackoverflow.com/questions/1663807/how-can-i-iterate-through-two-lists-in-parallel-in-python

temporary variable and should be replaced by itertools.izip or itertools.izip_longest which returns an iterator instead.. and should be replaced by itertools.izip or itertools.izip_longest which returns an iterator instead of a list. import.. instead of a list. import itertools for f b in itertools.izip foo bar print f b for f b in itertools.izip_longest foo bar..

Multiprocessing: using Pool.map on a function defined in a class

http://stackoverflow.com/questions/3288595/multiprocessing-using-pool-map-on-a-function-defined-in-a-class

multiprocessing import Process Pipe from itertools import izip def spawn f def fun pipe x pipe.send f x pipe.close return fun.. x in X proc Process target spawn f args c x for x p c in izip X pipe p.start for p in proc p.join for p in proc return p.recv..

Creating a python dictionary from a line of text

http://stackoverflow.com/questions/4356329/creating-a-python-dictionary-from-a-line-of-text

share improve this question In Python 2 you could use izip in the itertools module and the magic of generator objects to.. but with it you can just use plain zip since it does what izip did in Python 2 resulting in the latter's removal from itertools.. to now work in either version. try from itertools import izip except ImportError # Python 3 izip zip def pairwise iterable..

Python: List to Dictionary

http://stackoverflow.com/questions/4576115/python-list-to-dictionary

any temporary lists like the above. from itertools import izip i iter a b dict izip i i In Python 3 you could also use a dict.. like the above. from itertools import izip i iter a b dict izip i i In Python 3 you could also use a dict comprehension but.. smell. b a i a i 1 for i in range 0 len a 2 So the iter izip method is still probably the most Pythonic in Python 3 although..

Iterating over every two elements in a list

http://stackoverflow.com/questions/5389507/iterating-over-every-two-elements-in-a-list

a pairwise or grouped implementation from itertools import izip def pairwise iterable s s0 s1 s2 s3 s4 s5 ... a iter iterable.. iterable s s0 s1 s2 s3 s4 s5 ... a iter iterable return izip a a for x y in pairwise l print d d d x y x y Or more generally.. d d d x y x y Or more generally from itertools import izip def grouped iterable n s s0 s1 s2 ...sn 1 sn sn 1 sn 2 ...s2n..

Iterate a list as pair (current, next) in Python

http://stackoverflow.com/questions/5434891/iterate-a-list-as-pair-current-next-in-python

a b itertools.tee iterable next b None return itertools.izip a b How this works First two parallel iterators a and b are.. and b can traverse the original iterator independently the izip function takes the two iterators and makes pairs of the returned..