Python

PythonObject-oriented, interpretive programming language.Python usageGUI Programming: (PIL, Tkinter, PYTHONQT)Mathematical processing: (Standard math Library interface)Text Processing: (regular expression, XML)Web programming: (Web frameworks such

#变量不属于程序块, so there's no need to think about indentation, and the variable doesn't have to be followed by "," Numstars=int (Raw_input ("How many starts does you want?") For I in Range (1,numstars): # "*" after "," is to let * all in a row display,

1, url= http://www.mzitu.com/74100/x,2 value of 1 to 232, use the module OS to create files directory; Re module regular matching directory name picture; The time module restricts download times; Requests module gets the Web page source code; Urllib

Content Summary: First, recursion Recursion is the function itself calls itself until a layer exits after the specified condition is metRecursive properties: Must have a definite end condition Each time you

Recently writing Python encountered a problem with an internal variable using an external variable, now summarize it.#!/usr/bin/env pythonA = 100def SU ():A = a + 1Print (a)s = SU ()#执行这段代码会报错 (if only the call is not modified will not be an

Import TimeImport datetimePrint (time.altzone/3600) returns the UTC time in secondsPrint (Time.asctime ()) Return dateT=time.localtime () returns the time objectPrint (T.tm_year,t.tm_mday)T.tm_year: Return yeart.tm_mday: Number of days from the

First, create a tuple Tup1 = (' Physics ', ' Chemistry ', 1997, n); tup2 = (1, 2, 3, 4, 5); tup3 = "A", "B", "C", "D"; Create an empty tuple Tup1 = (); When you include only one element in a tuple, you need to add a comma after the element to

Os.remove cannot be used to delete a folder, otherwise access is denied. #-*-Coding:utf-8-*-import osif __name__ = = "__main__": Os.remove (' d:\\test ') Operation Result: To delete an empty directory: #-*-Coding:utf-8-*-import osif __name__ =

This example describes how Python implements changing the size of a picture. Share to everyone for your reference, as follows: 1, PIL package recommended pillow. 2. Source code: #encoding =utf-8#author:walker#date:2014-05-15#function: Change the

ASCII Code is a good solution to the english-language-based computer use language, but for example, when the Chinese want to save a man, it can not be achieved, so there is a new character Set GB2312 Chinese character set, but the number of

Python sort () method basic tutorial, pythonsort I. Basic Form sorted(iterable[, cmp[, key[, reverse]]])iterable.sort(cmp[, key[, reverse]]) Parameter description: (1) iterable specifies the list or iterable to be sorted. Needless to say; (2) cmp is

SQLite3 Chinese encoding Python implementation, Reading more than 100,000 pieces of text is written to the SQLite database. Because the text contains Chinese characters, it is correct to insert it into the database. It is always a

Python quickly generates documents from annotations, As a standard programmer, writing instructions for programs is a step-by-step task. How can we write well and fast? Let's discuss it in detail. Today, we will tell you a simple example. You only

Tutorial on installing Python 3.6.0 in Ubuntu 16.04 LTS source code, 16.043.6.0 Prerequisites The official website provides installation packages for Mac and Windows and the source code required for Linux installation. As follows: Https://www.python.

A regular re-run written by Python to obtain database data. Kids shoes with big data often write scheduled task run data, because dependencies between tasks (generally downstream dependent on upstream data output) often lead to data acquisition

Python Queue module details and examples, pythonqueue Python Queue Module In Python, a queue is the most common form of data exchange between threads. The Queue module provides Queue operations. Although it is easy to use, some exceptions may occur

The python implementation continues to execute the program by pressing any key, and python continues to execute When writing bat in windows, you can use the pause command to pause the program running. For example, a program that is frequently seen

Django, flask, and bottle are all started using gunicorn + gevent, single process, and DEBUG disabled. Only one string OK is returned for requests.Tornado is directly started by itself, and other content is consistent.The test software is siege, the