Python

Print the maximum of 10 files in the specified directory and output in reverse order:Vim top10.py #!/usr/bin/env pythonImport OSImport SysImport operatordef gen_dic (Topdir):DIC = {}A = Os.walk (Topdir)For P, D, F in a:For I in F:fn =

Both the thread and threading modules are capable of implementing multi-threading in Python, and generally it is easier to use threading because thread has a number of drawbacks, such as when the main thread ends, so the child threads are forced to

Map function: Prototype: Map (function, sequence), which maps a list to another list,How to use:def f (x):Return x**2L = Range (1,10)Map (f,l)OUT[3]: [1, 4, 9, 16, 25, 36, 49, 64, 81] Reduce function Prototype: reduce (function,

The previous article addressed some of the issues related to namespaces that might be encountered during the generation of instance objects by invoking class objects, and this time we went up one level to see how the class object itself was produced.

This article introduces you to the Python3 control router--the use of requests to restart the polar route. PY, the code wrote the corresponding comments, later written can be easily called module. With fiddler grab the packet can see a lot of HTTP

This article describes the Python function scope of the search order for everyone to refer to, the specific content as follows 1. What is LEGB?L:local function Internal scopeE:between the enclosing function interior and the inline functionG:global

This article describes the specific steps for installing Python under WinPE for your reference, as follows First, download the Python Windows installation package, the latest version is 3.3.0 Download Address:http://www.python.org/getit/ Second,

In this paper, the recursive implementation method of Python binary search algorithm is described. Share to everyone for your reference, as follows: Here is the code for a two-point lookup first: def binarysearch (Alist, item): First = 0 last

Open File Manipulating files 1 when opening a file, you need to specify the file path and open mode Open in the way: R: Read-onlyW: Write onlyA: Append "+" means you can read and write a file at the same time r+: Read and Writew+: Write ReadA +:

A python dictionary is another mutable container model (unordered), and can store any type of object, such as strings, numbers, tuples, and other container models. This article mainly introduces the Python dictionary (Dict) The detailed operation

In this paper, we describe the method of Python multi-process block reading large files. Share to everyone for your reference, as follows: Reads oversized text files, uses multi-process block reads, and outputs each piece separately as a

Python bulk replaces file contents, supports nested folders Import ospath= "./" for Root,dirs,files in Os.walk (path): For name in Files: #print nameif name.endswith (". html"): #print Root,dirs,name filename=root+ "/" +namef=open (filename, "R")

In this paper, we describe the method of Python implementation of the Joseph ring problem. Share to everyone for your reference, as follows: title:0,1,...,n-1 This n number of words in a circle, starting from the number 0 each time from the circle

This article describes the Python implementation of Sina Blog backup method. Share to everyone for your reference, as follows: Python2.7.2 version implementation, recommended to run in the IDE. #-*-Coding:utf-8-*-# ' Created on

The example in this article describes the Python implementation of the stack containing the Min function. Share to everyone for your reference, as follows: # Coding=utf8 ' title: Define the data structure of the stack, implement a min function in

Problem description A set of randomly arranged numbers is re-arranged in small to large order. Insert algorithm Each time a number is taken from the array, compared to the existing number and inserted in the appropriate position. So repeat,

A general example of Python implementation of insert sorting is: #coding =cp936#coding=cp936# insertion sorting algorithm def insertionsort (a): for J in Range (1,len (a)): key = A[j] i = j-1 # Find the insertion position forward while

1. Introduction Celery (celery) is an asynchronous task queue/job queue based on distributed messaging. It focuses on real-time operations, but is also good for scheduling support.Celery is used in production systems to handle millions of tasks per

The basic idea: merge sort is a kind of typical divide-and-conquer thought, divides an unordered list into one, divides each sub-sequence into another, and continues until it can no longer be divided. Then, we begin the process of merging, comparing

Today encountered a problem, at the casual tips of colleagues, the use of itertools.groupby this function. But this thing is still useless at last. The problem is to go to the news ID in a list and go back to the weight to ensure that the order is