dictionary

Reversing the order of key-value pairs in a dictionary (Python) [duplicate]

由 扶醉桌前 提交于 2021-01-02 06:50:08
问题 This question already has answers here : Python reverse dictionary items order (3 answers) Closed 3 days ago . How do I reverse the order of key-value pairs of a dictionary, in Python? For example, I have this dictionary: {"a":1, "b":2, "c":3} I want to reverse it so that it returns: {"c":3, "b":2, "a":1} Is there a function that I haven't heard about that can do this? Some lines of code is fine as well. 回答1: Dictionary does not have any sense of order , so your key/value pairs are not

VADER：社交网络文本情感分析库

由 血红的双手。 提交于 2021-01-01 09:12:52
VADER(Valence Aware Dictionary and sEntiment Reasoner)是专门为社交媒体进行情感分析的工具，目前仅支持英文文本，大邓在这里推荐给大家使用。大家可以结合大邓的教程 【视频课程】Python爬虫与文本数据分析 ，自己采集数据自己进行分析。 VADER情感信息会考虑： 否定表达（如，"not good"） 能表达情感信息和强度的标点符号 (如, "Good!!!") 大小写等形式带来的强调，（如，"FUNNY."） 情感强度(强度增强，如"very" ；强度减弱如， "kind of") 表达情感信息的俚语 (如, 'sux') 能修饰俚语情感强度的词语 （'uber'、'friggin'、'kinda'） 表情符号 :) and :D utf-8编码中的emoj情感表情 （ 来源： oschina 链接： https://my.oschina.net/u/4327212/blog/4872890

remove duplicates values in a dictionary python

由 孤街浪徒 提交于 2021-01-01 07:12:43
问题 I was around Stack Overflow and I find this question Removing Duplicates From Dictionary the man in the other question has my same problem. I tried the solution they give him but no of them works. Can you help me? Here is my list. And then here is my code: def printed(filename, day, time): try: result = {} f = open(filename, 'r') lines = f.readlines() d = defaultdict(list) start = lines.index(day+"\n") if day == 'Monday\n': stop = lines.index("Saturday\n") elif day == 'Saturday\n': stop =

How to Implement CacheMap with automatic expiration of entries?

由 会有一股神秘感。 提交于 2021-01-01 02:17:41
问题 Hi everyone I want to implement cache map in java in which map entries expire after given time. I have interface like this, I have to implement these methods, but I am not understand how actually start. public class CacheMapImpl implements CacheMap<Integer, String> { @Override public void setTimeToLive(long timeToLive) { } @Override public long getTimeToLive() { return 0; } @Override public String put(Integer key, String value) { return null; } @Override public void clearExpired() { }

How to Implement CacheMap with automatic expiration of entries?

由 谁说胖子不能爱 提交于 2021-01-01 02:17:34
问题 Hi everyone I want to implement cache map in java in which map entries expire after given time. I have interface like this, I have to implement these methods, but I am not understand how actually start. public class CacheMapImpl implements CacheMap<Integer, String> { @Override public void setTimeToLive(long timeToLive) { } @Override public long getTimeToLive() { return 0; } @Override public String put(Integer key, String value) { return null; } @Override public void clearExpired() { }

Is it possible to populate objects in map schema type?

由 ↘锁芯ラ 提交于 2021-01-01 00:02:59
问题 I have schema type Map in my mongoose model. In this map, each element has reference to another model. I know that it's possible to populate attributes in array, but how about Map type? Be cause nesting like "map_type_attribute.some_attribute_to_populate" doesn't work. :) This is my model: const Mongoose = require('mongoose'); const parameter = Mongoose.Schema({ definition: { type: Mongoose.Schema.Types.ObjectId, ref: 'Definition', }, value: {}, }, {_id: false}); const schema = Mongoose

Oracle_052_lesson_p4

由 余生长醉 提交于 2020-12-31 18:33:50
Managing the Database Instance 管理数据库 Oracle Database 11g Release 2 management framework components: 1、Database instance 2、Listener 3、Management interface: Database Control Management agent (when using Grid Control) $ . oraenv ORACLE_SID = [orcl] ? orcl $ emctl stop dbconsole Oracle Enterprise Manager 11g Database Control Release 11.2.0 $ echo $ORACLE_SID export $ORACLE_SID=tech1 em启动：emctl start dbconsole em停止：emctl stop dbconsole 访问em： https://192.168.133.120:1158/em 管理工具： sqlplus、sql developer 、 PL/SQL、shell 脚本 例： sqlplus hr/hr #Name of this file: batch_sqlplus.sh #Count employees and give

std::map with different data types for values

由 自闭症网瘾萝莉.ら 提交于 2020-12-31 09:29:44
问题 I have been searching the forums and google and having a hard time understanding how I can do what I want. My example is based of typical dataset you see for an election. I want to split a delimited string and create a map to access later The string looks like this: "name=candidate1;vote=1000;percent=10.5" I am able to create my map of strings as follows while (getline(oss, key, '=') && getline(oss, value)) { mCanData.insert(std::pair<std::string, std::string>(key, value)); } What I would

std::map with different data types for values

由 烂漫一生 提交于 2020-12-31 09:24:04
问题 I have been searching the forums and google and having a hard time understanding how I can do what I want. My example is based of typical dataset you see for an election. I want to split a delimited string and create a map to access later The string looks like this: "name=candidate1;vote=1000;percent=10.5" I am able to create my map of strings as follows while (getline(oss, key, '=') && getline(oss, value)) { mCanData.insert(std::pair<std::string, std::string>(key, value)); } What I would

Store large dictionary to file in Python

由 这一生的挚爱 提交于 2020-12-30 07:45:02
问题 I have a dictionary with many entries and a huge vector as values. These vectors can be 60.000 dimensions large and I have about 60.000 entries in the dictionary. To save time, I want to store this after computation. However, using a pickle led to a huge file. I have tried storing to JSON, but the file remains extremely large (like 10.5 MB on a sample of 50 entries with less dimensions). I have also read about sparse matrices. As most entries will be 0, this is a possibility. Will this reduce
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