The Python module--pyserial of serial communication

pyserial Overview This module encapsulates the access for the serial port. It provides backends for Python running in Windows, Linux, BSD (possibly any POSIX compliant system), Jython and Ironpytho N (. NET and Mono). The module named "Serial"

Python Crawler Combat: Stock Data directed crawler __python

The author of this article: Hang This article source: https://segmentfault.com/a/1190000010520835 function Introduction Objective: To obtain the name and transaction information of all stock in SSE and SSE. Output: Saved to file. Technical route:

Kafka (eight) Python producer and consumer API usage

Single thread producer#!/usr/bin/env python# -*- coding: utf-8 -*-import randomimport sysfrom  kafka import kafkaproducerfrom kafka.client import logimport timeimport  json__metaclass__ = typeclass producer:    def __init__ (Self,  kafkaserver= ' 127

Python basic exercise -003-to find all the daffodils between 100-999

Narcissus number refers to an n-bit positive integer (n>=3), and the sum of the n power of each number is equal to its own. For example: 153=1*1*1+5*5*5+3*3*3,153 is a three-digit number, and the sum of three times of each number is equal to 153.

Python Common standards Library

-------------------system built-in function-------------------1. StringStr= ' This is a string data test data ' correspondingStr[0]: Gets the character labeled 0 in the STR string.STR[3]: Gets the character labeled 3 in the STR string.Str[0:3]: Gets

Python crawler Learning: First Crawl _ Quick Glance book rankings

1 ImportJSON2 ImportRe3 fromUrllib.requestImportUrlopen#urllib usage: https://www.jb51.net/article/65279.htm4 5 #idea: Get Web content by URL-"Match needs content---" Get content to write to file6 7 8 defget_page (URL):9 """Ten Get the page

(ii) Python calls the Zabbix API from getting started to discarding--log in and get an authentication token

The URL to access the Zabbix API is:http://x.x.x.x/zabbix/api_jsonrpc.phpx.x.x.x may be your IP or domain nameOverview of the Access process:1, first Login2. Zabbix server returns a token after successful authentication3, with this token to access a

Python--json string related loads dumps load dump

# 1 JSON string length like dictionary, but not dictionary type, is str type#例如: User_info is a JSON string, Dict is a dictionary, if the content of the TXT text that identifies dict is a JSON stringUser_info = "'{"name1": "Lily", "name2": "tt",

A senior programmer with a monthly salary of 30k crawls millions of users with Python! and data Analysis!

Data volume: 3,289,329 people.Data acquisition tool: Distributed Python crawlerAnalysis tool: ElasticSearch + KibanaAnalysis angle: geographical location, gender ratio, all kinds of rankings, universities, active level.Please note:All of the

Find a directory Python script that contains a specific file and has an update within 24 hours

Find out which part of the Python script is updated within 24 hours of the directory where the specified files are located:Note:1, first find all the directories containing aa.txt files2. Filter out the updated directory within 24 hours (86,400

Using Python to analyze the Game of Thrones five Kings battle data

The Game of Thrones is one of my favorite American dramas, so I downloaded the dataset and analyzed it through Kaggle. The data name is interpreted as follows:Name: War of names, character variables. Year: The number of years that the war occurred,

(Python OpenGL) "4" Uniform variable Pyopengl

1 __author__="WSX"2 ImportNumPy as NP3 fromOpengl.glutImport*4 fromOpengl.glImport*5 ImportcTYPES6 ImportMath7 Globalgscalelocation8Scale = 0.09 #Vertex shader SectionTenVertex_shader =""" One #version A - Layout (location = 0) in vec3

Beginner python self-taught anaconda correct posture

In fact, Anaconda and Jupyter notebook have become the standard environment for data analysis.Simply put, Anaconda is the package Manager and Environment Manager, Jupyter notebook can combine the code, images, and documents of data analysis into a

Python-nmap Port Scan Example

Python-nmap is an encapsulation of NMAP commands, allowing Python to operate the Nmap scannerFirst install NmapYum Install Nmap-y# #shell命令操作端口扫描方法见此文: http://blog.51cto.com/superleedo/2094273Then install the Python-nmap moduleOpen

Python Library Encyclopedia

General: Urllib-Network library (STDLIB). Requests-Network library. grab– Network library (based on Pycurl). pycurl– Network Library (binding Libcurl). Urllib3–python HTTP library, secure connection pool, support file post,

Python "TypeError: ' Nonetype ' object is not iterable" error parsing

Respect original blogger, original link: 9953225ResolutionGenerally, the function returns a value of None and is assigned to multiple variables.Example look at the following:C=0def test (): if c = = 1: a = b = 1 return A, BA, B =

Selenium+python Automation 80-File download (Do not play inquiry box)

ObjectiveThe previous article is a button on the pop-up box to save the file, this article describes a more elegant way to load Firefox and chrome configuration files, do not pop up the query box background download.First, Firefoxprofile1. Click on

Python+selenium Learning--Simple object positioning

SceneThe positioning and operation of the test object is the core content of Webdriver, and the operation is based on the positioning, so the object positioning becomes more and more important.The purpose of locating objects generally has the

Ansible methods used as a Python module library

Ansible is a python package, is a complete unpack and play software, the only requirement for clients is that SSH has python, and python-simplejson packages, deployment simple to heinous. The following article will give you the main introduction of

Python implementation read JSON file to Excel table

This article mainly introduces the Python implementation to read the JSON file to Excel table, with a certain reference value, interested in small partners can refer to The example of this article for everyone to share the Python implementation to

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