Python

Recently in the study of Python, purely their own interests, but did not systematically read the Python programming books, feel that the above description is too cumbersome, in the site to find some learning site, found Liaoche Teacher's website

#!/usr/bin/evn pythonImportRedefDeal_negative_issue (calc_list):New_calc_list=[]#定义一个新的空列表, after filtering is complete, put the data into the new list    forIndex,iteminchEnumerate(calc_list): offItem.strip (). EndsWith ("*")orItem.strip ().

PrefaceIn the process of automated test practice, it is necessary to do log management, easy debugging and production problem tracking, Python provides logging module for log management. Below we will take a layer of logging module learning and use

Python has five data types, namely: You can view data types using the type built-in function1:str (String) 2:int (integer) 3:float (floating-point)3:list (list) 4:dict (dictionary) 5:set (collection)STR (string) is an immutable type: Each variable

We generally use logging log printing, but logging is thread-safe, multi-process also has a lot of introduction, introduce some file lock, to logging well configuration, can support. However, by testing, it is easy to find multiple processes that

The list in Python is mutable, which is the most important feature that distinguishes it from strings and tuples, in a nutshell: The elements of a list can be modified, and strings and tuples cannot (elements of the element ancestor elements can be

Original article: http://11072687.blog.51cto.com/11062687/1739870Recently found an article " Create screen using Zabbix API", and then download the script to test, found two questions:1.3.x version is not supported.2. The host name of the added

There are two types of Python3 that represent the sequence of characters: bytes and str. An instance of the former contains bytes with the original 8-bit value, 8 bits per byte, and an instance of the latter containing Unicode characters. The most

It is a headache to deal with Chinese in python2.x. Write this article on the net, the measurement is not homogeneous, and will be a bit wrong, so here intends to summarize an article. I will also learn in the future, and constantly revise this

Windows platform and Linux platform installation see official documentation: http://docs.opencv.org/3.2.0/da/df6/tutorial_py_table_of_contents_setup.html The Mac installation is not found on the official platform. Reference: https://www.learnopencv.

In the previous period due to the need to collect video data, I have a Youku video batch download program. Although the things are simple, but very practical, take out to share to everyone. 　　Version: python2.7+beautifulsoup3.2.1 Import

English Documents: issubclass(class, ClassInfo) Return true if class is a subclass (direct, indirect or virtual) of ClassInfo. A class is considered a subclass of itself. ClassInfo May is a tuple of class objects, in which case every entry in

Using Socketserver module to implement network client and server concurrent connection non-blocking communication First, let's look at the classes available in the next Socketserver module: Baseserver: The core functionality of the containing

In Python development, the most common way to download files is to use the Urllib or URLLIB2 module via HTTP. Of course you can also use Ftplib to download files from the FTP site. In addition, Python provides another way to requests. Here's a look

A Software and Environment (1) installation date 2016/12/23; (2) raw material VS2013,cuda-8.0(preferably download cuda7.5, currently theano-0.8.2 support for cuda-8 is not very good),anaconda3-4.2.0( in a position); (3) the environment is

Python built-in function open () for opening files and creating file objects Grammar Open (Name[,mode[,bufsize]]) Name: File name Mode: Specifies the open mode of the file R: Read-only W: Write A: Additional R+,w+,a+ supports both input and output

Related APIs: Folder: Get the current working directory, that is, the directory path of the current Python script work: OS.GETCWD () Returns all files and directory names under the specified directory name: Os.listdir () function to delete a file:

In the process of learning the basic Python tutorial, we will generally deal with the basics of strings, lists, tuples, dictionaries and so on, and then we'll take a look at the examples of strings, lists, tuples, and dictionaries as Follows:one,

Reprint: http://blog.csdn.net/liuchunming033/article/details/39080457Rotatingfilehandler Method Reference http://www.cnblogs.com/dkblog/archive/2011/08/26/2155018.htmlImport loggingFrom logging.handlers import Rotatingfilehandler#####################

Python program packaging and python Packaging Environment: CentOS6.5 _ x64Python: 2.6Use pyinstaller to package Pyinstaller can package a python program into a binary file. The packaged file can also be executed in an environment without python