python Programming Glossary: hashes

Scanning huge tables with SQLAlchemy using the ORM

http://stackoverflow.com/questions/1145905/scanning-huge-tables-with-sqlalchemy-using-the-orm

huge table containing my pictures archive indexed by SHA1 hashes to remove duplicates . Which was impressingly fast... For fun.. for p in session.query Picture print p I expected to see hashes scrolling by but instead it just kept scanning the disk. At..

'order' of unordered Python sets

http://stackoverflow.com/questions/12165200/order-of-unordered-python-sets

but I assume it applies to sets as well . Basically python hashes the elements and takes the last N bits where N is determined.. complicated when you need to resolve collisions between hashes but that's the gist of it. Also note that the order that they..

Music Recognition and Signal Processing

http://stackoverflow.com/questions/2068286/music-recognition-and-signal-processing

sound hash if 4. sound hash is in any of the 2. sound hashes return the matched music I though of reducing the quality bit.. pretty awesomely impressive How do they do that Do sound hashes exist or is it something I just made up If they do how can I..

is a there md5 decrypt function in python? [duplicate]

http://stackoverflow.com/questions/2760911/is-a-there-md5-decrypt-function-in-python

Possible Duplicate Is it possible to decrypt md5 hashes i used md5.new md5.update aaa md5.digest to form a md5 hash.. what was hashed either by examining a list of known hashes or by hashing a set of inputs and matching the resulting hashes.. or by hashing a set of inputs and matching the resulting hashes with the hash you are trying to decode . Quoting Wikipedia the..

How to improve performance of this code?

http://stackoverflow.com/questions/4295799/how-to-improve-performance-of-this-code

can do is convert closedlist into a set object. This keeps hashes of its items so the in operator is much more efficient than..

FSharp runs my algorithm slower than Python!

http://stackoverflow.com/questions/5850243/fsharp-runs-my-algorithm-slower-than-python

are reading this . Other algorithms depend on dictionaries hashes and can't be easily switched to using arrays making programs..

Finding duplicate files and removing them

http://stackoverflow.com/questions/748675/finding-duplicate-files-and-removing-them

chunk def check_for_duplicates paths hash hashlib.sha1 hashes for path in paths for dirpath dirnames filenames in os.walk.. hashobj.digest os.path.getsize full_path duplicate hashes.get file_id None if duplicate print Duplicate found s and.. print Duplicate found s and s full_path duplicate else hashes file_id full_path if sys.argv 1 check_for_duplicates sys.argv..

Python print statement ?侻yntaxError: invalid syntax??/a>

http://stackoverflow.com/questions/7584489/python-print-statement-syntaxerror-invalid-syntax

Why is early return slower than else?

http://stackoverflow.com/questions/8271139/why-is-early-return-slower-than-else

'__doc__' 29 To clarify how the hashing works __builtins__ hashes to 1196389688 which reduced modulo the table size 32 means it.. it is stored in the #8 slot of the table. without_else hashes to 505688136 which reduced modulo 32 is 8 so there's a collision...