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"29" python shallow into six common modules

deserialized to re-read the data.The Python object that was Pickle is also called serialization, as for why the name of the serialization, the foreigner from the I do not know, anyway, everyone is so called. However, since there is a serialization process, of course, there is deserialization, otherwise the saved file and how to read it. Deserialization is the use of the load function. The method is simple, so long as the saved file is opened in a rea

Python's modules and packages

One, Module 1. What is a module?Common scenario: A module is a file that contains Python definitions and declarations, and the file name is the suffix of the module name plus the. Py.In fact, the import loaded module is divided into four general categories:1 code written using Python (. py file)2 C or C + + extensions that have been compiled as shared libraries or DLLs3 packages for a set of modules4 built-

Python Crawler Learning Notes (3) Summary of relevant knowledge points for regular expressions (re modules)

numbers (note: is one). To invert the character set, you can place ' ^ ' at the beginning of the string, such as ' [^ABC] ' to match any character except A,b,c. Note: If you want to '. ', ' * ', '? ' These special characters are used as literal characters and are escaped with ' \ ', but are not necessary in the character set, although they are legal (because you can adjust the order to resolve them). Remember the following two rules: A. If ' ^ ' appears at the beginning of the character set, it

Brief Introduction to Python modules and packages

Brief Introduction to Python modules and packagesWe often use packages written by others. If we use Python3.4 and install it in the C root directory of windows, the external packages are generally placed in: C: \ Python34 \ Lib \ sit-packages. py files exist separately, and there are packages in folders. Let's briefly talk about the

Python Common Modules

One, module, packageWhat is a module?The module is essentially a Python file, which is used to organize the code, meaning that the Python code is written inside, the filename is the name of the module, test.py test is the module name.What is a package?Packages, the package is essentially a folder, and the folder is not the same is that it has a __init__.py file, the package is logic to organize the module,

Python "urllib" and "urllib2" modules information leakage and Denial of Service Vulnerabilities

Release date:Updated on: Affected Systems:Python python 2.6.xPython 2.4.xDescription:--------------------------------------------------------------------------------Bugtraq id: 47024Cve id: CVE-2011-1521 Python is a disruptive, interactive, and open-source object-oriented programming language, similar to Perl, Tcl, Scheme, or Java. Python "urllib" and "urllib2

[Python]-urllib and URLLIB2 modules

Transferred from: http://zeping.blog.51cto.com/6140112/1143722Urllib and URLLIB2 are all related modules that accept URL requests, but provide different functionality.Urllib provides the UrlEncode method for generating a Get query string, and Urllib2 does not.Urllib:Web Base: Import Urllib #打开51cto CTO = Urllib.urlopen (' http://www.51cto.com ') #打开本地文件: CTO = Urllib.urlopen (url= ' file:/root/python

Python-related operations on JSON and a brief analysis of JSON modules

. Jsonencoder): def default (self,obj): #convert object to a dict d = {} d[' __class__ '] = Obj.__class __.__name__ d[' __module__ '] = obj.__module__ d.update (obj.__dict__) Return D class Mydecoder (JSON. Jsondecoder): def __init__ (self): JSON. Jsondecoder.__init__ (Self,object_hook=self.dict2object) def dict2object (self,d): #convert dict to Object If ' __class__ ' in d:class_name = D.pop (' __class__ ') module_name = D.pop (' __module__ ') mod Ule = __import__ (module_name) Class_ =

Python Learning Note 10 _ modules, third-party module installation, module import

One, module, Package 1, moduleThe module is essentially a python file. It is used to organize the code, meaning to write the Python code inside, the filename is the name of the module, test.py test is the name of the module2. PackagePackages, the package is essentially a folder, and unlike a folder it has a __init__.py file. The package is logically organized into modul

Study notes of the Random and Math modules in Python

This article mainly introduces the study notes of the Random and Math modules in Python. This article describes the mathematical constants, common simple functions, and trigonometric functions of the math module, describes the common functions, random selection, and sorting of the random module. For more information, see the random, math, and time''datetime modules

Python Modules and Packages

Modules and packages are introduced in the following format, followed by a detailed illustrationImport file nameFrom directory name import file nameFrom directory name. File name Import class nameA. Module1. The module can make the code reusable, reduce the workload, easy to maintain; Implement code sharing, multi-person development, LIB library referenceThe module is the basic way that Python organizes the

Learning notes of the Random and Math modules in Python, pythonrandom

Learning notes of the Random and Math modules in Python, pythonrandom Since the random, math, and time''datetime modules in Python are often used recently, it is decided to take a moment to learn about the time system. 1. math Module Functions in math cannot be used for operations that are too complex. If you need to r

Python to build APNS related modules of the apple push notification PUSH Service User Guide, pythonapns

Python to build APNS related modules of the apple push notification PUSH Service User Guide, pythonapns APNS is a Push service provided by Apple for IOS devices ). You should be familiar with mobile Internet-related development. Next, I will give you a brief introduction to some APNS related modules in Python and their

Python Learning Note III: Modules

One: moduleA module is a py file, which defines some business functions. Reference modules, which can be imported using Import statements. After the module is imported, the function in the module is used by the module. Function name (parameter) . If there are multiple modules with the same name, the previous module name needs to be added to the package path.If we only need to import several functions in the

Python learning Experience (vii) in-depth understanding of threading multithreaded Modules

Python provides multiple modules to support multithreaded programming, including thread,threading , and queue modules.The thread module provides basic threading and locking support, while the threading module provides a higher level of more comprehensive thread management.Queue module, users can create a queue data structure that is used to share between multiple threads.Core tip : Avoid using the thread mo

Python modules and Paths

1 #Remember that you cannot have the same name as the method function, or you will get an error! 2 3 #Python's modules and packages are divided into three types:4 #1. Standard library5 #2. Third-party modules6 #3. Custom Modules7 8 #the introduction of the Python Module principle:9 #join you create a module, after the import module, Python will interpret the cont

Python Learning (10)--Modules and packages

First, the moduleA module is a file that contains the Python definition and reputation, and the filename is the module name plus the. py suffix.Import loaded modules are divided into four general categories:1. Code written using Python (. py file)2. C or C + + extensions that have been compiled as shared libraries or DLLs3. Package a set of modules4. Built-in

Python Software directory structure specification-how to import additional catalog modules with environment variables

The "project directory Structure" is also a category of "readability and maintainability".How directory is organizedThere are already some common directory structures for how to organize a better Python project directory structure. On this issue of StackOverflow, we can see the discussion of the Python directory structure.This is already very good, I do not intend to rebuild the wheel to enumerate the diffe

Introduction to two built-in modules in Python

This article mainly introduces two built-in modules in Python. This article describes the two built-in modules that will be loaded by default after Python is started. if you need them, refer to the following, it can be said that the basic unit of Python is the module. when u

Adding custom modules in Python

In general, we will store our own Python modules separately from Python's own modules for easy maintenance purposes. So how do you add a custom module to Python? Before we answer this question, we must first clarify two points: 1. Strictly differentiate between packages and folders. A package is defined as a folder th

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