Python

First out a topic: 1. There is a list= [1, 2, 3, 4, 5, 6]Please print the output:0, 11, 22, 33, 44, 55, 6Print output,2. Reverse list to [6, 5, 4, 3, 2, 1]3. Select the even number in a and the result is [4, 8, 12]This example uses the use of

Sort is the function of the container: sort (Cmp=none, Key=none, Reverse=false)Sorted is a python built-in function: Sorted (iterable, Cmp=none, Key=none, Reverse=false)Parameter resolution:CMP: compare function, compare what parameter is determined

Isinstance is an intrinsic function syntax in Python: Isinstance (object, ClassInfo) If the argument object is an instance of ClassInfo, or object is an instance of a subclass of the ClassInfo class, Returns True. If object is not a given type, the

EnumerateYou can automatically generate a column for the list, starting from 0, and automatically growing by 1, you can specify a default start valueList_product = ["ThinkPad", "MacBook", "Iphone8", "Robbit"]for key,v in Enumerate (list_product,1):

Higher order functionsHigher order function: A function can receive another function as a parameter or a function can return a function as a return value, which is called a higher order function.# function add receives the F function as a parameter

Python Getting Started TutorialPython is a high-level programming language for interpreting, object-oriented, and dynamic data types.Python was invented by Guido van Rossum at the end of 1989, and the first public release was released in 1991.Like

Import RandomImport StringPrint (Random.randint (1, 199)) # [1,199] randomly take an integer s = Random.choice ([' qwe ', ' wer ', ' ert ') # Randomly take an element Print (s) print (string.digits)# All the numbers 0-9Print

Import OSPrint (OS.GETCWD ()) # Fetch the current working directory, absolute PathOs.chdir ("..") # Change the current directoryPrint (Os.curdir) # current directory, relative pathPrint (Os.pardir) # Parent directory, relative pathOs.mkdir

In the company's morning symmetry process, several times asked a correlation analysis, just see this Google's Open Source Library, and the relevant operations and debugging results recorded.The novel collection can be Baidu "Jin Yong novel complete 1

#!/usr/bin/env python#CODING=GBKImportLogging, OSclassLogger:def __init__(Self, path, clevel=logging. DEBUG, flevel=logging. DEBUG): Self.logger=Logging.getlogger (path) self.logger.setLevel (logging. DEBUG) FMT= Logging. Formatter ('[% (asctime) s]

One, Second level start an HTTP download serverIn practice, there is a need to pass documents to other colleagues. It is not a tedious task to pass a file to a colleague, and now the Chat tool generally supports file transfer. However, if you need

http://blog.csdn.net/zyz511919766/article/details/25136485/Import Logging logging.debug ('debug message') Logging.info ( ' Info Message ' ) logging.warning ('warning message') Logging.error ( 'error message') logging.critical (' Critical

#脚本作用: Querying server configuration information#用法: IP is written to the current file host.txt the script is executed again#日期: 2018-1-15#作者: ￥￥￥Import ParamikoFrom multiprocessing import Pooldef main (hostname):SSH = Paramiko. Sshclient

JavaScriptJavaScript is a programming language, the browser has built-in JavaScript interpreter, so in the browser according to the JavaScript language rules to write the corresponding code, the browser can explain and make corresponding

(i) preparatory work 1. Create a new module (name customization) that holds the module code to be published. 2. Create a new setup.py module (storing the metadata of the module, describing the relevant information). 3. Create a

Example of the mosaic effect in the ps filter implemented by Python, python Filter This article describes how to implement mosaic in the PS filter using Python. We will share this with you for your reference. The details are as follows: Here, we use

Use Python to operate MySQL Databases and pythonmysql Databases 1. Install mysql-python Run the following command: Pip intall mysql-python After installation: Import MySQLdb If no error occurs, the installation is successful. 2. Connect to

Python and Java for DES encryption and decryption instances, pythondes DES is the abbreviation of Data Encryption Standard (Data Encryption Standard). It is a common symmetric Encryption algorithm. This article does not describe the features and

Python SSH module logon, remote machine execution of shell Command instance parsing, pythonssh Use the python SSH module to log on and execute shell commands on a remote machine. (The Redhat series should be compatible if the test is successful in

Python judges the language type instance code based on unicode, and python language type In this example, python judges the language type based on unicode as follows. Instance code: Def is_chinese (uchar): "determines whether a unicode character is