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preface Blogger I have been wandering in Niuke's facial classics area all year round and summarized the high-frequency examination questions of big factories such as byte, Alibaba, Baidu, Tencent, meituan, etc. but today, I teach you how to crawl facial classics. If you can help your little partners, please give me a lot of support three t ...

Introduction to Python regular Python has added the re module since version 1.5, which provides a Perl style regular expression pattern. The re module enables the Python language to have all the regular expression functions. Before using regular expressions in Python, you need to reference the re module. The syntax is as follows: import r ...

Introduction to sklearn -- implementation of regression decision tree in sklearn_ Example demonstration 1 1. Introduction to regression tree Almost all parameters in as like as two peas are categorization. The parameters of the regression tree function are as follows: class sklearn.tree.DecisionTreeRegressor (criterion='mse', splitter='best' ...

Python wechat ordering applet course video https://edu.csdn.net/course/detail/36074 Python practical quantitative transaction financial management system https://edu.csdn.net/course/detail/35475 preface Recently, the company is working on a project of NFT mall, which is roughly a platform that only buys and sells digital products. In the p ...

MyTT MyTT is a Swiss Army knife in your quantitative toolbox. It is refined and efficient. It simply transplants the indicator formula indicators such as tongdaxin, tonghuashun, Mandarin Chinese and wheat language into Python. The core library is a single file with only 100 lines of code. It implements and converts all common indicators of ton ...

Previously mainly used Java and C++As my own programming language, I want to learn comprehensively recently python，So I started from the basic study, according to teacher Liao Xuefeng[python Website learning](https://www.liaoxuefeng.com/wiki/1016959663602400). I learned a little before when I used python to do projects, but it is not systemati ...

0. Preface In the middle, there are many process notes to modify the code, which are not available. They are only used to record ideas. If you want to see the final code, turn to the bottom directly. Run Li Mo 2021 deep learning linear regression code as follows def synthetic_data(w, b, num_examples): """generate y = Xw + b + Noise."" ...

1. Preface Hello, everyone In the daily process of dealing with Python, it is inevitable to involve data reading and writing business. For example, when doing crawler, you need to store the crawled data locally first, and then do the next step of processing; When doing data visualization analysis, you need to read the data from the hard disk ...

Summary of Python crawler common libraries: requests, beatifulsoup, selenium, xpath summary Remember to install fast third-party libraries. Python often needs to install third-party libraries. The original download speed is very slow, and it is very fast to use domestic images pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simpl ...

Chapter 14: testing, debugging and exceptions The experiment was great, but debugging? It's not that interesting. The fact that there is no compiler to analyze your code before Python tests the code makes testing an important part of development. The goal of this chapter is to discuss some common problems about testing, debugging, and exceptio ...