permutation - Is there an efficient way of generating numbers with repeated digits in Python? -


i trying generate 5 digit numbers out of {1,2,3,4,5,6,7,8,9} such digit can repeated @ twice. is, numbers 12345, 11267, 11226 allowed 11134 or 11115 not allowed.

i can write code multiple loops perhaps, wondering if there shorter, more elegant methods available. example, itertools.product('123456789', repeat=5) generate such 5 tuples (9^5 in total) or itertools.permutations(''123456789',5) generate 5 tuples no repetitions (9x8x7x6x5 in total). wondering there way use these tools generate numbers of form 11235 , 11224 nothing else without going through multiple loops , like.

unless i've misunderstood question, using 

itertools.permutations('112233445566778899',5)

should trick.

edit: included repeats, since had 2 of each digit. wrapping in set seems solve that:

set(itertools.permutations('112233445566778899',5))

Comments

Post a Comment

Popular posts from this blog

python - Installing PyDev in eclipse is failed -

unable read repository @ http://pydev.sf.net/updates/content.xml. sun.security.validator.validatorexception: pkix path building failed: sun.security.provider.certpath.suncertpathbuilderexception: unable find valid certification path requested target i installing pydev in eclipse using python, doesn't install successfully. gives above error. happened? how solve error? i had error when trying install on laptop behind corporate firewall. couldn't tell setup of firewall, not sure of root cause. i got passed error installing pydev eclipse when out behind firewall. another way got around have eclipse on non-firewalled machine, install pydev eclipse, , copy whole eclipse directory non-firewalled machine firewalled machine. there better way, , way fix properly, didn't have time work out firewall doing. this on windows 7 machine (yeah know) not work *nix versions installed through package manager yum or apt.
Read more

PHP OOP-based login system -

lets building oop-based user authentication system, , incorporate following principles: direct injection, inheritance, encapsulation, polymorphism , single responsibility principle. my background in programming has relied on procedural programming, , thus, finding difficult put these practices correct use. assume have these classes: class config { public function set($key, $value); public function get($key, $default = null); } class user { public function __construct(pdo $dbh, $id = null); public function setprofile(profile $profile); } class auth { public function __construct(config $config); public function login($username, $password, $keeploggedin = true); public function isloggedin(); public function getloggedinuser(); public function logout(); public function register(array $data); } class session { public function start($sessionname = null); public function write($key, $value); public function read($key, $default =...
Read more

python - Exception while importing pymorphy2 -

i've installed pymorphy2 using pip: requirement satisfied (use --upgrade upgrade): pymorphy2 in /usr/local/lib/python2.7/site-packages requirement satisfied (use --upgrade upgrade): docopt>=0.6 in /usr/local/lib/python2.7/site-packages (from pymorphy2) requirement satisfied (use --upgrade upgrade): pymorphy2-dicts<3.0,>=2.4 in /usr/local/lib/python2.7/site-packages (from pymorphy2) but when i'm trying import library in python interactive shell this: >>> import pymorphy2 traceback (most recent call last): file "<stdin>", line 1, in <module> file "/usr/local/lib/python2.7/site-packages/pymorphy2/__init__.py", line 3, in <module> .analyzer import morphanalyzer file "/usr/local/lib/python2.7/site-packages/pymorphy2/analyzer.py", line 10, in <module> pymorphy2 import opencorpora_dict file "/usr/local/lib/python2.7/site-packages/pymorphy2/opencorpora_dict/__init__.py", line 4, ...
Read more