Python crawler uses lxml module to crawl and analyze the bean flaps reading list

The last time Beautiful Soup library was used to crawl movie charts, it was relatively troublesome and slow. The lxml library I used this time is my personal favorite. The grammar of crawling is simple and the speed of crawling is fast. The top page address of the list is: https://www.douban.com/doulist/1264675/?start=0&sort=time&playab ...

Posted on Fri, 10 May 2019 15:23:59 -0700 by vishi83

Print complete okhttp network request and response logs using logger

Printing complete okhttp network request and response logs using logger xiaoyanger follow 2017.01.17 00:31* Words 909 Reading 7107 Comments 14 Like 44 The network request tool used by our company in the project ...

Posted on Fri, 10 May 2019 11:46:16 -0700 by kof20012

Chapter V Initialization and Cleanup

"With the development of the computer revolution,"unsafe"programming has gradually become one of the main reasons for the high cost of programming" Initialization and cleanup are just two security issues. Many c-language errors arise from programmers forgetting to initialize variables, especially when using ...

Posted on Thu, 09 May 2019 03:00:38 -0700 by brent123456

PostgreSQL 1100 billion tpcb performance test on ECS

Label PostgreSQL, tpcb, pgbench, 10 billion background PostgreSQL 11 will be released soon. The following are the results of tpcc and tpch tests: PostgreSQL 11 tpcc Test (103,000 tpmC on ECS) - use sysbench-tpcc by Percona-Lab (TPC-H test SF=10,SF=200) PostgreSQL 11 vs 10 vs Deepgreen tpcb is the standard test CASE for pgbench. This paper us ...

Posted on Thu, 09 May 2019 02:39:39 -0700 by vasoftwaresolutions

Redis goes deeper and lighter -- strings and SDS

1. Strings The implementation code for the string is in the sds.c and sds.h files. 1.1 String Introduction Strings are the most common type of data storage in Redis, and their underlying implementation is the simple dynamic string sds, which can be modified. It is similar to an ArrayList in Java in that it reduces the freq ...

Posted on Wed, 08 May 2019 23:57:39 -0700 by fahrvergnuugen

Taifang-EVM Part 4 ——ABI Encoding External Method Calls

In the last article in this series, we saw how Solidity represents complex data structures in EVM memory. But if you can't interact, the data is meaningless. Intelligent contracts are intermediaries between data and the outside world. In this article, we will see that Solidity and EVM allow external programs to call contractua ...

Posted on Wed, 08 May 2019 18:30:38 -0700 by davidx714

Netty Implements Custom Protocols

The most widely used protocol is the HTTP protocol, but in some areas of service interaction, it is relatively less used for three main reasons: The HTTP protocol carries information such as header s and cookie s, and its byte utilization is low, which makes the HTTP protocol bloated and requires more packets to be sent when the same informati ...

Posted on Wed, 08 May 2019 12:24:38 -0700 by dukeu03

Shell command - file, md5sum for file and directory operations

File and directory operations - file, md5sum 1. file: Display the type of file Functional description of file command Used to identify the file type. Through the file instruction, we can identify the type of the file. Syntax Format of file Command file [-bchiklLNnprsvz0] [--apple] [--mime-encoding] [--mime-type] [-e testname]File [-bcLvz][ ...

Posted on Wed, 08 May 2019 06:57:40 -0700 by jblallement

Formatted output (fmt package)

fmt package Function: fmt package implements formatted I/O similar to C language printf and scanf. Formatting actions ('verb') come from C but are simpler. fmt formatted output The Printf function has more than 10 escape characters, which are called verb by Go programmers. The following table is incomplete, but it illustrates many of the funct ...

Posted on Tue, 07 May 2019 09:20:40 -0700 by ugriffin

Build translation model on TEB dataset ——Seq2Seq

The basic idea of_Seq2Seq model is very simple. It uses a cyclic neural network to read the input sentence, compress the information of the whole sentence into a fixed dimension encoding, and then uses another cyclic neural network to read the encoding and decompress it as a sentence in the target language. These two cyclic neur ...

Posted on Mon, 06 May 2019 19:10:39 -0700 by exa_bit