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python Programming Glossary: random

python random string generation with upper case letters and digits

http://stackoverflow.com/questions/2257441/python-random-string-generation-with-upper-case-letters-and-digits

random string generation with upper case letters and digits I want.. How can I achieve this in a Pythonic way python string random share improve this question Answer in one line ''.join random.choice.. share improve this question Answer in one line ''.join random.choice string.ascii_uppercase string.digits for x in range N..

How are Python's Built In Dictionaries Implemented

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

in the comments see dictobject.c 33 126 CPython uses random probing . In random probing the next slot is picked in a pseudo.. see dictobject.c 33 126 CPython uses random probing . In random probing the next slot is picked in a pseudo random order. The.. . In random probing the next slot is picked in a pseudo random order. The entry is added to the first empty slot. For this..

Weighted random selection with and without replacement

http://stackoverflow.com/questions/352670/weighted-random-selection-with-and-without-replacement

random selection with and without replacement Recently I needed to.. and without replacement Recently I needed to do weighted random selection of elements from a list both with and without replacement... more efficient simpler or both. python algorithm random random sample share improve this question One of the fastest..

How to reliably guess the encoding between MacRoman, CP1252, Latin1, UTF-8, and ASCII

http://stackoverflow.com/questions/4198804/how-to-reliably-guess-the-encoding-between-macroman-cp1252-latin1-utf-8-and

else had this problem of a zillion legacy text files randomly encoded If so how did you attempt to solve it and how successful.. on. Fortunately our files are seldom small. Apart from the random README file most are in the size range of 50k to 250k and many.. common. For example in a search I just performed on 100 random English Wikipedia articles the most common non ASCII characters..

Python list comprehension rebind names even after scope of comprehension. Is this right?

http://stackoverflow.com/questions/4198906/python-list-comprehension-rebind-names-even-after-scope-of-comprehension-is-thi

but even that's not fool proof. The fact that there's this random time bomb waiting kind of negates all the nice ease of use of..

Python: Is there a way to determine the encoding of text file?

http://stackoverflow.com/questions/436220/python-is-there-a-way-to-determine-the-encoding-of-text-file

are optimized for specific languages and languages are not random. Some character sequences pop up all the time while other sequences..

Use numpy array in shared memory for multiprocessing

http://stackoverflow.com/questions/7894791/use-numpy-array-in-shared-memory-for-multiprocessing

ctypes.c_double N arr tonumpyarray shared_arr # fill with random values arr np.random.uniform size N arr_orig arr.copy # write.. tonumpyarray shared_arr # fill with random values arr np.random.uniform size N arr_orig arr.copy # write to arr from different..

Python: simple list merging based on intersections

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

3 16 29 9 97 43 17 63 24 print merge lst Benchmark import random # adapt parameters to your own usage scenario class_count 50.. ~300 lists for i in xrange list_count_per_class lst if random.random large_list_probability size random.choice large_list_sizes.. lists for i in xrange list_count_per_class lst if random.random large_list_probability size random.choice large_list_sizes else..

Python ImportError cannot import urandom Since Ubuntu 12.04 upgrade

http://stackoverflow.com/questions/10366821/python-importerror-cannot-import-urandom-since-ubuntu-12-04-upgrade

Upgraded Ubuntu to Precise Pangolin 12.04 and Python's Random is now broken... I suspect other things might be broken too... cannot import name urandom Alas poor Python I knew him Random a module of infinite jest of most probable chaos. He hath bore..

Random Python dictionary key, weighted by values

http://stackoverflow.com/questions/1056151/random-python-dictionary-key-weighted-by-values

Python dictionary key weighted by values I have a dictionary..

Encrypt & Decrypt using PyCrypto AES 256

http://stackoverflow.com/questions/12524994/encrypt-decrypt-using-pycrypto-aes-256

result Here's what I've done so far from Crypto import Random from Crypto.Cipher import AES import base64 BLOCK_SIZE 32 def.. MUST be 16 24 or 32 bytes long how can I do that IV Random.new .read BLOCK_SIZE aes AES.new passphrase AES.MODE_CFB IV.. aes.encrypt message def decrypt encrypted passphrase IV Random.new .read BLOCK_SIZE aes AES.new passphrase AES.MODE_CFB IV..

Key-ordered dict in python

http://stackoverflow.com/questions/1319763/key-ordered-dict-in-python

case mapping structure for which Ordered iteration is O n Random access is O 1 The best I came up with was gluing a dict and.. collections dictionary share improve this question Random access O 1 is an extremely exacting requirement which basically..

Python Weighted Random

http://stackoverflow.com/questions/14992521/python-weighted-random

Weighted Random I need to return different values based on a weighted round..

How to AES encrypt/decrypt files using Python/PyCrypto in an OpenSSL-compatible way?

http://stackoverflow.com/questions/16761458/how-to-aes-encrypt-decrypt-files-using-python-pycrypto-in-an-openssl-compatible

md5 from Crypto.Cipher import AES from Crypto import Random def derive_key_and_iv password salt key_length iv_length d d_i.. out_file password key_length 32 bs AES.block_size salt Random.new .read bs len 'Salted__' key iv derive_key_and_iv password..

Generating List of N Random Numbers Between a Range of Numbers

http://stackoverflow.com/questions/17749629/generating-list-of-n-random-numbers-between-a-range-of-numbers

List of N Random Numbers Between a Range of Numbers I'd like to generate a list..

Random weighted choice

http://stackoverflow.com/questions/2073235/random-weighted-choice

weighted choice I have data like that d 701 1 0.2 701 2 0.3..

Python: Random is barely random at all?

http://stackoverflow.com/questions/2145510/python-random-is-barely-random-at-all

Random is barely random at all I did this to test the randomness of.. is likely to be wildly wrong. A quick primer on Pseudo Random Number Generators PRNGs The first part of your problem is that..

Modern, high performance bloom filter in Python?

http://stackoverflow.com/questions/311202/modern-high-performance-bloom-filter-in-python

from BitVector import BitVector from random import Random # get hashes from http www.partow.net programming hashfunctions.. self.bits bits else self.bits BitVector size m self.rand Random self.hashes self.hashes.append RSHash self.hashes.append JSHash..

selection based on percentage weighting

http://stackoverflow.com/questions/3655430/selection-based-on-percentage-weighting

ProportionValue T Proportion proportion Value value static Random random new Random public static T ChooseByRandom T this IEnumerable.. Proportion proportion Value value static Random random new Random public static T ChooseByRandom T this IEnumerable ProportionValue.. static Random random new Random public static T ChooseByRandom T this IEnumerable ProportionValue T collection var rnd random.NextDouble..

Python Random Access File

http://stackoverflow.com/questions/4999340/python-random-access-file

Random Access File Is there a Python file type for accessing random..

Random word generator [closed]

http://stackoverflow.com/questions/594273/random-word-generator

word generator closed What would be the best way to go about..

Random 'None' output from basic python function

http://stackoverflow.com/questions/7053652/random-none-output-from-basic-python-function

'None' output from basic python function I just learned am..

Random strings in Python 2.6 (Is this OK?)

http://stackoverflow.com/questions/785058/random-strings-in-python-2-6-is-this-ok

strings in Python 2.6 Is this OK I've been trying to find a..