Python

python3.4.3 to BeautifulSoup support is not very good, most of the online is python2.7 installation tutorials, and press that is quite a bit of trouble. Finally, a solution was found in https://www.crummy.com/software/BeautifulSoup/bs4/doc.zh/ 1.

Import socket, sysLSTN = Socket.socket (socket.af_inet, socket. SOCK_STREAM)Lstn.bind ((', 2000))Lstn.listen (5) v = 'CS = []NC = 2 for I in Range (NC):     (CLNT,AP) = Lstn.accept ()     clnt.setblocking (0) br>     cs.append (clnt)     

Cause: Written several times, each time can't remember #-*-Coding:utf-8-*- import time from datetime import datetime def datetime2secs (mydate): ' Datetime.datetime type to epoch seconds ' return time.mktime (Mydate.timetuple ())

Original: Convert into: Python code #-*-coding:utf-8-*-import os from PIL import * curdir= "E:\\py\\winpython-32bit-2.7.6.4\\study" Os.chdir (CurDir) def rgb2blackwhite (filename): im=image.open (filename) print "Image info,", Im.format,im.mode,im.

TQDM is a fast, extensible Python progress bar that allows you to add a progress message to the Python long loop, where the user simply encapsulates any iterator tqdm (iterator).Installation can be done by: Pip Install TQDM conda install TQDM

Two methods: 1 using the Extend method of the list, L1.extend (L2), which adds all the elements of the parameter L2 to the tail of the L1, for example: Train_set = featuresets0[:2000] train_set.extend (featuresets1[:2000]) print (len (train_set))

# #将文本中的name = Configuration Item value is updated to Name=newvalue import re import OS p=re.compile (R ' (^name) = (. +) ') f=file (' d:// Soft/list.txt ', ' R ') f2=file (' D://soft/list3.txt ', ' W ') while True: line=f.readline () If Len ==0:

Buildlist = [] #定义一个空列表用于存放目录中需要的文件名 for Dirpath, Dirnames, fileNames in Os.walk (Gpathsrc + "/.. /build_record "): #迭代目录 for Curbuildname in dirnames: if Re.search ((". * (mi.*). * "), Curbuildname): # Regular

Objective When reading English documents, I often use Google translation or Sogou translation to assist in translating English words. Google translation compared to other peers, translation of academic-related things, the effect is still possible.

1. Download the default installation: http://www.python.org/download/ 2. Environment variable configuration: Path%path%; C:\Python 3. Run Python 1) Interactive interpreter: You can go to Python from the Command line window and start writing

This article describes Python's database operations: (1) Pymysql Library installation: Python3 version and above, you need to use the Pymysql library to connect MySQL (2) Database operations (3) Business 1, the installation of Pymysql Library (1

# after installation, use activate to activate an environment. Activate Python34 # for Windows SOURCE Activate Python34 # for Linux & Mac # after activation, you will find that the terminal input more python34 words, in fact, at this time the system

Original of HTTP GET/alter?user=abcde&pwd=123456 Re.compile (R '/(?) Palter) \? (? Puser= (? p[a-za-z]{5,10}) &pwd= (? P (?: \ d|\w) {6,}?) $')Step1 (? Palter) A matching HTTP path ( alter ) was found and named Url_path Step2 (? Puser= (? p[a-za-z]{

To install Scrapy, error, to install lxml so encountered this problem, recorded.Well, the installation lxml error, the lack of a library of C + +. Well, I installed it or made a mistake.Baidu solves: All say this good. is to install wheel and then

Do not care what the specific installation is. Anyway, there's an error. The Red Place. pip Install name Collecting virtualenv/opt/python27/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:315: Snimissingwarning:an

There are three ways to delete list elements in Python, remove (), Del (), pop () functions(1) Remove ()>>> name = [' Xiao Ming ', ' Xiao Hua ', ' Xiao Hong ', ' Xiao Li ', ' Xiao Xia ', ' Xiao Wen ']>>> name.remove (' Little Red ')>>> Name[' Xiao

The variable and its storage of the--python of preliminary knowledgeBefore we get into the details of Python assignment, copy, and Deepcopy, it's time to take a moment to learn about the storage of variables in Python memory.In a high-level language,

1. Modify the fileTo supplement the last not finished washing:To modify a place in a file, you can use the Seek function to find the location write function modification.Do you think it's easy?But if you do this, it is likely that garbled characters

I. Python collection set () add Delete, intersect, set, set operation detailsIn Python set is a collection type of the base data type, which has both a mutable set (set ()) and an immutable set (Frozenset). Creating Set Sets, collection set

The principle of timed tasksThe server executes a Python scriptThis script, looping through the configured scheduled task addressThe Python request address, which should return the number of seconds to execute the next time. That is, the frequency