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R329-opencv4_contrib-wechat_qrcode The CV team of wechat has opened the wechat QR code scanning engine and has joined opencv4_contrib module, let's try it today. Install opencv_contrib In the previous tutorial, we only installed the python version of OpenCV (in fact, it can be used without installation, because the C + + version and python v ...

Detailed explanation of ATM + shopping cart project in Python First of all, we need to know how a project grows from nothing README.py Operation requirements: # I Project requirements: simulate and implement an ATM + shopping mall program """ 1. Quota 15000 or customized 2. Realize the shopping mall, add shopping to the s ...

preface In the previous blog post, we learned Dimension reduction algorithm PCA , and Parameters of PCA . This article is based on the premise of having a certain foundation for PCA. This paper mainly introduces the application of PCA algorithm in practice. Including the selection of PCA parameters, the use of PCA in training set and test ...

Python asyncio asynchronous programming Author: Wu Peiqi source: http://www.cnblogs.com/wupeiqi/ The copyright of this article belongs to the author and the blog park. Reprint is welcome, but this statement must be retained without the consent of the author, and the original text link must be given in an obvious position on the article page ...

redis_day02 review Five data types and application scenarios typecharacteristicUsage scenariostringSimple key value type. Value can be string and numberRegular counting (microblog number, fan number and other functions)hashhash is a mapping table of string type field and value. hash is especially suitable for storing objectsStore some data th ...

The Chinese New Year is coming soon. The vagrants who work outside are finally going to return home. Although the epidemic is serious, we still have to go back home. We can only go back once or twice a year when we are far away from home. We are homesick! No, open 12306 to buy a ticket. I saw that there were no tickets. We can't afford this fir ...

preface In the supervised learning algorithm of machine learning, our goal is to learn a stable model with good performance in all aspects, but the actual situation is often not so ideal. Sometimes we can only get multiple preferred models (weak supervised model, which performs better in some aspects). Three cobblers make Zhuge Liang. Ensemble ...

#3 operation list Traversal list for Python's for loop syntax structure for a in b: #a is an element in list b. (don't forget the colon) For loop execution process: first take the first value in b, store it in a, and then execute the code in the for loop; Since there are other values in b, continue to execute for until the values in b are tr ...

preface Using Python to realize the visualization of China Metro data. No more nonsense. Let's start happily~ development tool Python version: 3.6.4 Related modules: requests module; wordcloud module; pandas module; numpy module; jieba module; Pyecarts module; matplotlib module; And some Python built-in modules. Environment construction Many p ...

Last time, we got the product information of Amazon. Naturally, we need to take a look at the comments. Users' comments can intuitively reflect whether the current commodity value is worth buying, and Amazon's scoring information can also obtain the weight of scoring. Amazon's comment area is composed of user ID, score and comment title, reg ...