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python Programming Glossary: pairs

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

have two iterables in Python and I want to go over them in pairs foo 1 2 3 bar 4 5 6 for f b in some_iterator foo bar print f..

Python: create a dictionary with list comprehension

http://stackoverflow.com/questions/1747817/python-create-a-dictionary-with-list-comprehension

to create dictionaries too For example by iterating over pairs of keys and values mydict k v for k v in blah blah blah # doesn't..

Python: How to read huge text file into memory

http://stackoverflow.com/questions/1896674/python-how-to-read-huge-text-file-into-memory

32 bit machine etc you'd be using 934MB for those 30M pairs of integers. Using numpy you can also do the job using only..

Find all Chinese text in a string using Python and Regex

http://stackoverflow.com/questions/2718196/find-all-chinese-text-in-a-string-using-python-and-regex

only be represented in narrow Unicode builds via surrogate pairs RE re.compile u' 夂€ 夂欌饣斥饪曘€呫€囥€ ┿€ 恒€汇涠典榭冭槎翠井讳甫榫嶿' re.UNICODE.. python build so can't use chars 65535 without surrogate pairs else try L.append unichr i except pass RE ' s ' ''.join L..

Python unittest: Generate multiple tests programmatically? [duplicate]

http://stackoverflow.com/questions/2798956/python-unittest-generate-multiple-tests-programmatically

to test under_test and a set of expected input output pairs 2 332 234 99213 9 3 # ... I would like each one of these input.. 9 3 # ... I would like each one of these input output pairs to be tested in its own test_ method. Is that possible This.. TestPreReqs unittest.TestCase def setUp self self.expected_pairs 23 55 4 32 def test_expected self for exp in self.expected_pairs..

How are Python's Built In Dictionaries Implemented

http://stackoverflow.com/questions/327311/how-are-pythons-built-in-dictionaries-implemented

have a strategy to insert and retrieve the key and value pairs unambiguously. Python dict uses open addressing to resolve hash..

Comprehension for flattening a sequence of sequences?

http://stackoverflow.com/questions/457215/comprehension-for-flattening-a-sequence-of-sequences

here from itertools import chain seq '012345' swapped_pairs zip seq 1 2 seq 2 swapped_pairs '1' '0' '3' '2' '5' '4' .join.. chain seq '012345' swapped_pairs zip seq 1 2 seq 2 swapped_pairs '1' '0' '3' '2' '5' '4' .join chain swapped_pairs '103254' I.. swapped_pairs '1' '0' '3' '2' '5' '4' .join chain swapped_pairs '103254' I use zip on the even and odd slices of the sequence..

Javascript equivalent of Python's zip function

http://stackoverflow.com/questions/4856717/javascript-equivalent-of-pythons-zip-function

is given two arrays of equal lengths create an array of pairs. javascript python functional programming share improve this..

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

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

the izip function takes the two iterators and makes pairs of the returned elements advancing both iterators at the same..

Python regex find all overlapping matches?

http://stackoverflow.com/questions/5616822/python-regex-find-all-overlapping-matches

to a lookahead but the examples I've seen only show pairs of numbers rather than larger groupings and I haven't been able..

What's the difference between list and tuples in Python?

http://stackoverflow.com/questions/626759/whats-the-difference-between-list-and-tuples-in-python

more explicit and understandable. One example would be pairs of page and line number to reference locations in a book e.g...

How do I use Python's itertools.groupby()?

http://stackoverflow.com/questions/773/how-do-i-use-pythons-itertools-groupby

for statement groupby returns three key group iterator pairs once for each unique key. You can use the returned iterator..

Django dynamic model fields

http://stackoverflow.com/questions/7933596/django-dynamic-model-fields

the data from a column format to a set of key value pairs in the model. Harder to maintain. Maintaining data integrity..

python dictionary sort by key

http://stackoverflow.com/questions/9001509/python-dictionary-sort-by-key

are unordered. Even if you sorted the key value pairs you wouldn't be able to store them in a dict in a way that would..

Python: simple list merging based on intersections

http://stackoverflow.com/questions/9110837/python-simple-list-merging-based-on-intersections

results i last e_set return results # katrielalex's def pairs lst i iter lst first prev item i.next for item in i yield prev.. lsts g networkx.Graph for lst in lsts for edge in pairs lst g.add_edge edge return networkx.connected_components g #..