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models for your scraped items##See documentation in:#https://doc.scrapy.org/en/latest/topics/items.htmlImportscrapy fromScrapy.loaderImportItemloader fromScrapy.loader.processorsImportTakefirstclassStockstaritemloader (itemloader):#custom itemloader for storing field content crawled by crawlersDefault_output_processor =Takefirst ()classStockstaritem (scrapy. Item):#Define the fields for your item here is like: #name = Scrapy. Field ()Code = Scrapy. Field ()#

I have invested some money in fund and stock purchases over the past few years and want to understand this holiday. Either the stock or the stock market is reflected in the stock market. The essence of the stock market is to raise funds and return dividends. Whether a

LeetCode Best Time to Buy and other Stock II, leetcode= Best Time to Buy and Buy Stock II Total Accepted: 41127 Total Submissions: 108434 My Submissions Question SolutionSay you have an array for which the ith element is the price of a given stock on day I. Design an algorithm to find the maximum profit. you may complete as your transactions as you like (ie, buy

In fact, today is lost. For Baidu rankings and updates, I have some doubts. It seems that I will always slow down Baidu one step. Even if, for the 360 search, I personally stole the thought to be fast it so a little bit.Let's get down to the chase. After all, I don't have much time to lose in an office with a good morning sunshine. Block in our site ranking is the biggest obstacle, in fact, Baidu itself. It's posted, it's library, it's known, it's encyclopedia. Simply, the 360 search has not yet

Here's the book. Random walk refers to the past performance, unable to predict the future development steps and direction. Your return on investment is at least equal to the rate of inflation, just to achieve breakeven. The rock theory argues that every investment tool has a solid pillar called "intrinsic value", whether it is ordinary stock or real estate. The value depends entirely on the price others are willing to pay. The higher the d

best time to Buy and Sell Stock IISay you has an array for which the i-th element is the price of a given-stock on day I.Design an algorithm to find the maximum profit. You could complete as many transactions as (ie, buy one and sell one share of the stock multiple times). However, engage in multiple transactions for the same time (ie, you must sell the

Every investor who goes into the stock market has studied various technical indicators more or less. However, in the actual combat, often some indicators have just issued a buy signal, but also some indicators that prompted you to sell. These are often confusing, and some have even put forward the idea of "useless theory of technical indicators". So, in many technical indicators, there is no deceptive, the most valuable indicators?The answer is yes, t

What is stock policy trading? Do you often regret failing to sell when you fall below the support line or fail to buy when you break through the resistance line, and then start to regret it and blame yourself every day, if God gives himself another chance, he will sell or buy it at any time, but regret it is useless. The past has become a thing of the past, no matter whether there are many reasons (because he is at work, there is no time to view the

Best time to Buy and Sell Stock ITopic:Say you has an array for which the i-th element is the price of a given-stock on day I.If you were-permitted-to-complete at most one transaction (ie, buy one and sell one share of the stock), design an AL Gorithm to find the maximum profit.Ideas:Just find the maximum difference, max (prices[j]–prices[i]), I /** * @param {num

Sometimes you need to add a line chart to the Excel stock chart to compare the data, such as adding "turnover" data to the stock chart. As shown in the A1:f29 area contains the stock price data, where the A-E column is the opening, the highest, the lowest and the close, the F is listed as the turnover rate data, need a-e column data to draw

Since I have been thinking, why no one used automatic interactive software to conduct stock trading, who had known that my idea is the current frontier of finance. Fortunately I am a programmer, proficient in various programming languages such as C++,python ..... In Europe and the United States and other developed financial markets, more than half of the volume is issued by quantitative transactions, quantitative trading has become the mainstream tren

On the relationship between the stock market, the dollar exchange rate and the crude oil and gold price There are many factors that affect stocks, currencies, oil prices and gold prices. In general, however, there is an interaction between them. I. Stock market and crude oil prices If the stock market falls, it is generally regarded as a symptom of bad economic s

Today, I want to see the stock market of my beloved Shaanxi golden leaf (000812) under Ubuntu, while the stock market software below Ubuntu seems to be relatively small. Finally, I found a simple and green software that can view the stock market under Ubuntu. First download the stock market software. Download and decom

Say you has an array for which the i-th element is the price of a given-stock on day I.Design an algorithm to find the maximum profit. You could complete as many transactions as (ie, buy one and sell one share of the stock multiple times). However, engage in multiple transactions for the same time (ie, you must sell the stock before you buy again).===============

Often shuttle in the stock market investors are sure to know, in our side, often hear some investors complain of voice, complaining about their bad luck, complaining about the unfair stock market, others in the constant money, they are constantly losing money, or complaining that the market is not good, listen to other people's opinions also always go. Many times, in fact, is not your bad luck, nor is the m

Master the use of this software, and then say goodbye to being fooled by the "brick house", choose your own shares, and become an expert!You do not need to install the green software. You can simply double-click the decompressed software. F10 files and software:Http://gpf10.comSoftware author QQ: 32078915 Bytes ------------------------------------------------------------------------------------------------------ Software example --- Q : 1. How to view the stockYe jianyan,Zhao JianpingAnd so on:

period of time.If the soybean price increases to 4100 a month later, you can buy the first-hand soybean at 4050 of the price of the option. It is equivalent to saving 30 Yuan. If the price does not rise, it will fall to 3950.You can use 3950 to buy soy beans without choosing the option price. In this way, at most 20 yuan of option cost is lost. Futures and stocks are different: 1. The deposit trading method of futures will increase the function of your sto