hash function for string
I’ve had nice results with djb2 by Dan Bernstein.
dictionary
Writing a dictionary to a csv file with one line for every ‘key: value’
The DictWriter doesn’t work the way you expect. To read it back: which is quite compact, but it assumes you don’t need to do any type conversion when reading
Python dictionary from an object’s fields
Note that best practice in Python 2.7 is to use new-style classes (not needed with Python 3), i.e. Also, there’s a difference between an ‘object’ and a ‘class’. To build a dictionary from an arbitrary object, it’s sufficient to use __dict__. Usually, you’ll declare your methods at class level and your attributes at instance level, so __dict__ should be fine. For … Read more
Appending values to dictionary in Python
Just use append:
Python: How to check if keys exists and retrieve value from Dictionary in descending priority
One option if the number of keys is small is to use chained gets: But if you have keySet defined, this might be clearer: The chained gets do not short-circuit, so all keys will be checked but only one used. If you have enough possible keys that that matters, use the for loop.
How can you print a variable name in python? [duplicate]
If you insist, here is some horrible inspect-based solution. I hope it will inspire you to reevaluate the problem you have and look for another approach.
How do I make a dictionary with multiple keys to one value?
I have a question about a dictionary I want to make. My goal is to have multiple keys to a single value, like below: Any ideas?
How do you sort a dictionary by value?
Use: Since you’re targeting .NET 2.0 or above, you can simplify this into lambda syntax — it’s equivalent, but shorter. If you’re targeting .NET 2.0 you can only use this syntax if you’re using the compiler from Visual Studio 2008 (or above).
How do I print the key-value pairs of a dictionary in python
Python 2 and Python 3 i is the key, so you would just need to use it: Python 3 d.items() returns the iterator; to get a list, you need to pass the iterator to list() yourself. Python 2 You can get an iterator that contains both keys and values. d.items() returns a list of (key, value) tuples, while d.iteritems() returns an iterator that provides … Read more