I am intrigued by the following python expression: d3 = dict(d1, **d2) The task is to merge 2 dictionaries into a third one, and the above expression accomplishes the task just fine. I am interested in the ** operator and what exactly is it doing to the expression. I thought that ** was the power operator and haven't seen it used in t...
I have a dictionary and a list. The values of the keys match those of the list, I'm just trying to find out how to sort the values in the dictionary by the values in the list. >>> l = [1, 2, 37, 32, 4, 3] >>> d = { 32: 'Megumi', 1: 'Ai', 2: 'Risa', 3: 'Eri', 4: 'Sayumi', 37: 'Mai' } I've tried using somethin...
Hey guys, I am currently writing a resource manager for my game. This is basically a class that will handle all kinds of other objects of different types, and each object is referred to by name (a System.String). Now this is my current implementation, but since I am using a dictionary of objects I will still need to cast every object. I...
Hey, I have a dictionary object <string, string> and would like to bind it to a repeater. However, I'm not sure what to put in the aspx markup to actually display the key-value pair. There are no errors thrown and I can get it to work with a List. How do I get a dictionary to display in a repeater? Thanks Answer: I used this code in ...
I am in the middle of developing a custom persistent Key Value type data structure, to compare against SqlLite and Berkley DB. Anyway before I wrote the implementation I wanted to find the best data structure to use for this purposes. I looked at the a couple: An open source redblack tree. Mono Dictionary implementation. I wanted th...
(I'm not sure if this off-topic. I found a lot of voted-up questions about software licenses and this is related. Plus, I'm sure many of us have had the situation that we need to use a dictionary in our code) I'm making a (maybe commercial) word game and need to use a good word dictionary for checking words. The most common dictionaries...
Hey everyone, Sorry for the very general title but I'll try to be as specific as possible. I am working on a text mining application. I have a large number of key value pairs of the form ((word, corpus) -> occurence_count) (everything is an integer) which I am storing in multiple python dictionaries (tuple->int). These values are sprea...
Given the following stack trace: MESSAGE: Value cannot be null.Parameter name: key SOURCE: mscorlib TARGETSITE: Void ThrowArgumentNullException(System.ExceptionArgument) STACKTRACE: at System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument) at System.Collections.Generic.Dictionary'2.FindEntry(TKey key) at Syst...
Let's say I have an arbitray list of A class A { string K {get;set;} string V {get;set;} } ... List<A> theList = ... Is there an easy way to compose a dictionary from theList? (something like the following) Dictionary<string, string> dict = magic(x => x.K, x => x.V, theList) I don't want to write the following code: var d = new D...
I would like to be able to make a Python dictionary with strings as keys and sets of strings as the values. E.g.: { "crackers" : ["crunchy", "salty"] } It must be a set, not a list. However, when I try the following: word_dict = dict() word_dict["foo"] = set() word_dict["foo"] = word_dict["foo"].add("baz") ...
Usually word lists are 1 file that contains everything, but are there separately downloadable noun list, verb list, adjective list, etc? I need them for English specifically. ...
Why dictionaries in python appears reversed? >>> a = {'one': '1', 'two': '2', 'three': '3', 'four': '4'} >>> a {'four': '4', 'three': '3', 'two': '2', 'one': '1'} How can I fix this? ...
For my project, the role of the Lecturer (defined as a class) is to offer projects to students. Project itself is also a class. I have some global dictionaries, keyed by the unique numeric id's for lecturers and projects that map to objects. Thus for the "lecturers" dictionary (currently): lecturer[id] = Lecturer(lec_name, lec_id, ma...
My data is structured in a way that I ended up creating a nested dictionary in my design like: my_dict = {"a": {"b": {"c":"I am c"}}} my_dict["a"]["b"]["c"] Is it usual! or we have some other better alternatives (using objects!)? ...
I'm reading a 6 million entry .csv file with Python, and I want to be able to search through this file for a particular entry. Are there any tricks to search the entire file? Should you read the whole thing into a dictionary or should you perform a search every time? I tried loading it into a dictionary but that took ages so I'm current...
Im using a Dictionary, i will have around a million entries and i will be regularly be adding, removing, editing, and polling.. im wondering what the up/down sides of all the entries will be, and if there is a more efficiant way. ...
I understand that it's quite easy to check if a key is available in a dictionary, but what about certain values? So, what I have here is a dictionary of lists where the key references a set of, for consistency's sake, strings. It would look a bit like this: menu = {'breakfast':['soft-boiled eggs', 'hash brown', 'Earl Grey'], ...
Hi guys, I have a dictionary(python) with key->value (str->int). I have to chose some key due to it's own value. Then bigger this value the key has less posibility to be chosen. For example if key1 has value 2 and key2->1 key1 the attitude should be 2:1. How can I do this? ...
Hi guys, my question is: I have a dictionary with one object for each character of the alphabet. Within those objects, there are all values for a specific character. Example: alphabetDictionary a apple alien b balloon ball I now want to count all entries within this dictionary: apple alien balloon ball -> 4 Usi...
first, an example: given a bunch of Person objects with various attributes (name, ssn, phone, email address, credit card #, etc.) now imagine the following simple website: uses a person's email address as unique login name lets users edit their attributes (including their email address) if this website ha...