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Showing posts with the label Hash

Is There Any Hash Function Which Have Following Properties

I want a hash function which is fast, collision resistant and can give unique output. The primary r… Read more Is There Any Hash Function Which Have Following Properties

Why Hash Function On Two Different Objects Return Same Value?

I used Spyder, run Python 2.7. Just found interesting things: hash(-1) and hash(-2) both return -2… Read more Why Hash Function On Two Different Objects Return Same Value?

Hashtable/dictionary/map Lookup With Regular Expressions

I'm trying to figure out if there's a reasonably efficient way to perform a lookup in a dic… Read more Hashtable/dictionary/map Lookup With Regular Expressions

Verifying Password Hashes Generated By Python Passlib

I have a need to verify password hashes generated using python passlib. My objective is to use pass… Read more Verifying Password Hashes Generated By Python Passlib

What Makes Lists Unhashable?

So lists are unhashable: >>> { [1,2]:3 } TypeError: unhashable type: 'list' The f… Read more What Makes Lists Unhashable?

Typeerror: A Float Is Required In Sklearn.feature_extraction.featurehasher

I'm using sklearn version 0.16.1. It seems that FeatureHasher doesn't support strings (as D… Read more Typeerror: A Float Is Required In Sklearn.feature_extraction.featurehasher

How Does One Encode And Decode A String With Python For Use In A Url?

I have a string like this: String A: [ 12234_1_Hello'World_34433_22acb_4554344_accCC44 ] I wo… Read more How Does One Encode And Decode A String With Python For Use In A Url?

Multilevel Dictionary In Python

I would like to create a perl style multilevel dict in python however I'm struggling to get thi… Read more Multilevel Dictionary In Python