dictionary

问题 Need help! I am trying to code a simple function that could return the data from an excel source. I am trying to create a list of Maps of data from excel file but the list that I am getting has the same values. All value are the same. Here is my code: import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import java.io

问题 How to loop through list of maps to filter out SearchMap key-values from below List having map of records using JS? Map var searchMap = new Map() searchMap.set("ed_mood", "strong") searchMap.set("ed_target_audience", "Expert") searchMap.set("ed_clip_type", "intro") List var master_data = [ {ed_mood: "Light", ed_rating: 10, ed_target_audience: "Novice", ed_clip_type: "Basic"}, {ed_mood: "Light", ed_rating: 5, ed_target_audience: "Expert", ed_clip_type: "Q&A"}, {ed_mood: "Strong", ed_rating: 8,

问题 This question already has answers here : Closed 8 years ago . Possible Duplicate: Map two lists into a dictionary in Python trying to make dictionary with 2 list one being the key and one being the value but I'm having a problem. This is what I have so far: d={} for num in range(10): for nbr in range(len(key)): d[num]=key[nbr] say my key is a list from 1 to 9 and value list is [2,4,0,9,6,6,8,6,4,5] how do i assign so it that its like {0:2, 1:4, etc...} 回答1: zip() to the rescue! >>> k = range

问题 I am trying to write a nested dictionary to CSV in Python. I looked at the csv.DictWriter documentation on python.org and some of the examples here on stackoverflow but I can't figure out the last part. Here is a representative data set: data = {u'feeds': [{u'feed_code': u'free', u'feed_name': u'Free'}, {u'feed_code': u'paid', u'feed_name': u'Paid'}, {u'feed_code': u'grossing', u'feed_name': u'Grossing'}], u'code': 200} ColTitle = ['code','feed_code','feed_name'] with open('test.csv','wb') as

问题 Is it possible to automatically bind a Dictionary to a Gridview? The closest I've got is: Dictionary<string, myObject> MyDictionary = new Dictionary<string, myObject>(); // Populate MyDictionary here. Grid1.DataSource = MyDictionary.Values; Grid1.DataBind(); This binds the properties in myObject to the gridview, but I'd like to get the key as well. If it's not possible, is there an alternative, e.g. use a repeater? Thanks. 回答1: You can use: var data = MyDictionary.Select(x => new List<object>

问题 I am attempting to use Ansible to send a command to several hosts that returns a dict. I then want to append the the dict results of each host to accumulate the results of all the hosts. Finally, I want to print the dict of accumulated results for later processing or to write to a file. It appears I am failing to combine the dicts due to results showing as string. Is there a way to remedy this? Also, is there a more Ansible efficient way to accomplish this? Example Playbook: --- - hosts:

问题 When I try the following in VB.NET Dim data = New Dictionary(Of String, Integer) data.Count(Function(x) x.Value > 0) 'Compile-time error! I get this compile error with .Net Fiddle: Too many arguments to 'Public Overloads ReadOnly Property Count As Integer' Visual Studio gives me this error: 'Public ReadOnly Property Count As Integer' has no parameters and its return type cannot be indexed. The following does work though: Enumerable.Where(data, Function(x) x.Value > 0).Count() 'Works! data

问题 Perhaps my understanding of python's dictionary is not good. But here's the problem. Does it ever happen that a {yolk: shell} pair exists in the dictionary say eggs , but a eggs.get(yolk) can return None ? So, in a large code, I do multiple get operations for a dictionary, and after certain iterations, I observe this situation. >>> for key, value in nodehashes.items(): ... print(key, nodehashes.get(key), value) ............................ ........................... <Graph.Node object at

问题 I am having trouble figuring out where I'm going wrong. So I need to randomly replace words and re-write them to the text file, until it no longer makes sense to anyone else. I chose some words just to test it, and have written the following code which is not currently working: # A program to read a file and replace words until it is no longer understandable word_replacement = {'Python':'Silly Snake', 'programming':'snake charming', 'system':'table', 'systems':'tables', 'language':'spell',

问题 My list looks like my_list = [['A', 6, 7], ['A', 4, 8], ['B', 9, 3], ['C', 1, 1]], ['B', 10, 7]] I want to find the averages of the other two columns in each of the inner lists grouped by the first column in each of the inner list. [['A', 5, 7.5], ['B', 9.5, 5], ['C', 1, 1]] ['A', 5, 7.5] comes from ['A', (6+4)/2 ,(7+8)/2] I don't mind if I end up getting a dictionary or something, but I would prefer it remain a list. I've tried the following: my_list1 = [i[0] for i in my_list] my_list2 = [i