Python

The following examples are primarily used to demonstrate how different scopes and namespaces are referenced, and how the keyword global and nonlocalru affect the binding of variables. The results of the instance run are: After the local

Recently learning Python, so I wrote a script in Python, parking management system (Hey, I used PHP to do a system in college, but also won the award) But the program now has too much of a limitation to use the Python environment before it is more

The following are all based on the PYTHON3 environment but (also support 2.7 only to note the syntax)First, add the interpreterWhen writing a file, you need to identify which interpreter to execute and add a Chinese interpreter.1 #!/usr/bin/env

Use of the Itertools module:#Coding=utf-8"""Itertools Module"""ImportItertoolsImportUnitTestclassTestitertools (unittest. TestCase):defTest_count (self):"""Itertools.count () infinite generation of natural numbers"""natuals= Itertools.count (1, 1)

Recently, a server was attacked, and an attacker replaced a system command on the server, such as a ps,ss,netstat,lsof file. How to do the troubleshooting will not say. The main purpose of this article is to write a script that examines the users of

#-*-Coding:utf-8-*-"""Created on Fri Feb 17 20:25:05 2017@author: Who"""Import OSImport Os.pathImport reImport stringRootdir=r ' D:\test 'For the parent, Dirnames, filenames in Os.walk (RootDir): # Three parameters: 1. Parent Directory 2. All folder

Type one: serialization of form dataErrordict need to be used at this time.ret[' Errors ' = obj.errors.as_data () result = Json.dumps (ret, cls=jsoncustomencoder) #JsonCustomEncoder是自定义的cls, Used to convert a special error field type in RET return

1 ImportQueue2 ImportContextlib3 Import Time4 @contextlib. ContextManager5 defworker_state (xxx,val):6 Xxx.append (val)7 Print("before", XXX)8 Try:9Time.sleep (1)Ten yield One finally: A Xxx.remove (val) - Print(" After",

ObjectiveThe basics of regular expressions do not say, interested can click here, extract the general in two cases, one is to extract the text to extract a single position of the string, and the other is to extract a number of consecutive positions

In the previous article we talked about Python's function as a return value and closure concept, we continue to explain the function to do parameters and adorners, this function is very convenient and practical, can greatly simplify the code, let's

1. Get the current working directory in PythonCurDir = OS.GETCWD ()OS.GETCWD () returns the directory where the command was executed, not the directory in which the script itself resides2, Os.path Os.path.abspath (path) #返回绝对路径 Os.path.split

The examples in this article describe common problems and workarounds for Python installation cx_oracle modules. Share to everyone for your reference, as follows: When installing or using cx_oracle, you need to use Oracel's link library, such as

Preface Each person writes the script the format will be different, some will indicate the script itself some information, some is straight to the point, this in small team in fact nothing, basic others do what you also know, but if put to big

Python Basic Instruction Pack and class usage Create a folder Filepackage Create __init__.py within the Filepackage folder With __init__.py, Filepackage is a package, otherwise it is just a normal folder. Create file.py within the Filepackage

This article describes a Python implementation method that reads the last n rows of a file. Share to everyone for your reference, as follows: #-*-Coding:utf8-*-import osimport timeimport datetimeimport mathimport stringdef get_last_line

Morning up idle to do nothing, inexplicably pop up embarrassing things Encyclopedia of the jokes, then a think since you come to, then I write a crawler to your site crawl, one as practice practiced hand, and second also count for some fun. In

Python crawler notes: phantomjs + selenium content, pythonphantomjs For general websites, beautifulsoup using python can be crawled, but in the face of some websites that need to execute JavaScript on the page, you can use phantomjs + selenium to

Python list and pythonlist Operation 1. Add Append: adds an element to the end of the list. Insert (n, element value): Add an element to the specified index 2. Delete Pop (n): WHEN n is specified, the element at n is deleted. If n is not

Easy understanding of closures and decorators in python (below) and python decorations In the previous article, we talked about the concept of using functions as return values and closures in python. Next we will continue to explain how functions

Django enables user registration and login, and django enables user registration Learning Django: try to write a user registration and log on to the system and start to do things ==== O (LOGIN _ login) O Haha ~