Python

Problem description: I worked overtime all night last night to block a problem,ProgramTo import a file from another directory, and the file has its own dependent file (or library), it means the Import fails and continues reading it in the morning,

Recently, I just got started with python, so I can't hide my ears, but I can't wait to apply it to my work. Previously, we used cmd + photoshop for batch Image Processing (scaling and slicing), which imposes great limitations on execution efficiency

These two daysCodeThe automation tool has a fancy to sparkup. Although it is not as strong as zencoding, it is intended to be integrated into the editplus user tool, so this is used, zencoding already has a transplanted version of editpad ++, but it'

ArticleDirectory Create Value in the access dictionary Update dictionary Delete dictionary elements and dictionaries Dictionary built-in method Create Method 1: >>> Dict1 ={}>> dict2 = {'name': 'global', 'Port': 80 }>>>

Create >>> List = ["A", "B", "C", "D", "E"] >>> list ['A', 'B ', 'C', 'D', 'E'] Obtains an element or substring. >>> List = ["A", "B", "C", "D ", "E"] # obtain the first element >>> list [0] 'A' # obtain the last element >>> list [-1] 'E' # If

Class Method string. Upper (STR) needs to introduce the string module, the instance method Str. Upper () does not need to introduce the string Module Unparalleled list resolution # Coding = UTF-8 # list parsing print [I * 2 for I in [8,-2, 5]

ArticleDirectory Create a set Update set Create a set Use the factory methods set () and frozenset (): >>> S = set ('cheeseshop ') >>> sset (['C', 'E', 'h', 'O', 'P ', 'S ']) >>> T = frozenset ('bookshop') >>> tfrozenset ([' B ', '

#! /Usr/bin/ENV Python #-*-coding: UTF-8-*-# functional. PY # def Foo (X, Y, * ARGs): Sum = x + yfor N in ARGs: Sum + = nreturn sum # apply, filter, MAP, cecedef main (): print Foo (,) print apply (Foo, [, 5]) # apply is used to call a function, and

# Object serialization Import PickleD = { " A " : " China " }A = pickle. dumps (D, 2) # Serialize binary Print AF = open (" Data " , " WB " )F. Write ()F. Close () # Object deserialization Import PickleF = open ( " Data " ,"

As mentioned last time, we used the DOM tree method to replace regular expressions and replace HTML tags with specific attribute values. beautifulsoup was selected for the first time, but the leader prefers the lxml library.CodeAbstract The code

I think it is a relatively advanced usage in Python. I don't know if it is available in C. The special thing here is that since an interface has been made public, I cannot modify the function prototype, however, another function that accepts a

generally, the number of function parameters should not be too large. If the number of function parameters is too large, the function will not be easy to understand and use. In C, if there are too many function parameters, function parameters will

References: Http://blog.csdn.net/chosen0ne/article/details/7319306 Example: # ! /Usr/bin/ENV Python # -*-Coding: UTF-8 -*- Import Logging Import Logging. Handlers LOG_FILE = ' Tst. Log ' Handler = Logging. Handlers.

Import Pcap, dpkt, struct Import Binascii Def Main (): = Pcap. pcap () A. setfilter ( ' UDP portrange 4000-4050 ' ) Try : For I, pdata In A: P = Dpkt. Ethernet. Ethernet (pdata) SRC = ' % D. % d ' % Tuple (MAP (ORD, list (P. Data. SRC)

Source: http://blog.chenlb.com/2010/01/python-use-utf-8.html Generally, I like to use UTF-8 encoding. How can I use it in Python? 1. Use UTF-8 In the Python source code file. Generally, an error is reported as follows: File "F: \

1. Thread base 1.1. thread status The thread has five states. The state conversion process is shown in: 1.2. Thread Synchronization (LOCK) the advantage of Multithreading is that it can run multiple tasks at the same time (at least it feels

A library of idioms is required for creating an nlpproject. I need pure idioms. I have a detailed explanation of what I am looking for online. So I wrote a Python code to crawl idioms.Program. 1. First, find an online idiom website The website I

1. String. maketrans set the String Conversion rule table (translation table) allchars = string. maketrans ('','') # All strings, that is, the strings are not replaced. Atob = string. maketrans ('A', 'B') # convert character a to character B  2. The

In python, the sub-string in a string is extracted in a certain format. It is very efficient to use struck. Unpack.1. Set the fomat format as follows:# Take the first 5 characters, skip 4 characters, and then 3 Characters Format = '5s 4x 3s' 2. Use

Splitlines in Python are used to split rows. If the input parameter is true, the linefeed \ n is retained. The following example shows the details: Mulline = "" Hello !!! Wellcome to Python's world! There are a lot of interesting things! Enjoy