Python checks whether unicode is a Chinese character, number, English, or other character,
The following tool determines whether unicode is a Chinese character, number, English, or other character. Full-width to half-width. Unicode string normalization.#! /Usr/bin/env pyth
Recently, from data analysis, many keywords need to be matched from a large number of short articles. If the brute force find is found, the CPU becomes a bottleneck, so I thought of the AC automatic machine.
The AC automatic machine is a classic data structure for multi-mode matching. The principle is to construct a fail pointer like KMP. However, the AC automatic machine is constructed on the Trie tree, but the principle is the same.
In order to match unico
This article describes how to read and write unicode files in Python. it involves the reading and encoding operations related to Python and has some reference value, for more information about how to read and write unicode files in Python, see the following example. Share it
Coding problem has always been a headache problem:when the string is: ' \u4e2d\u56fd '>>>s=[' \u4e2d\u56fd ', ' \u6e05\u534e\u5927\u5b66 ']>>>str=s[0].decode (' Unicode_escape ') #.encode ("Euc_kr")>>>print StrChinaWhen the string is: ' #19996; #20122; #23398; #22242; #19968; #20013; '>>>print UNICHR (19996)EastOrd () supports Unicode, which can display Unicode numbers for specific characters, such as:>>>p
# Auther:aaron Fan‘‘‘ASCII: Chinese is not supported, 1 English is 1 bytesUnicode (Universal code, supports text display in all countries): Supports Chinese, but each English and Chinese accounts for 2 bytesUTF-8 (is a variable-length character encoding for Unicode, also known as the Universal Code.) ):English still occupies 1 bytes according to ASCII, and all Chinese characters are uniformly 3 bytes.Unicode supports each country's code conversion, su
Today, write a crawler, get the intermediate data contains similar Unicode encoding, at that time it is very simple, then seriously look, the situation is a bit different, normal Unicode as follows
>> s = U ' Chinese '>>> sU ' \u4e2d\u6587 '
And the data obtained is just the content inside the quotation marks, then the question comes, how to convert the data to the original appearance?First we
Example 1:V1=u ' good magic question!? 'Type (v1)-"UnicodeV1.decode ("Utf-8") # Work,because V1 is Unicode alreadyV1.encode ("gb2312") #work, convert from Unicode to gbk2312FoundDecode is the conversion of the specified object to Unicode (Unicode contains utf-8,utf-16) and indicates how the object to be converted is en
In Python processing Chinese is often used in unicode, because it is easier to encounter the problem of string encoding, I generally turn the string into Unicode to handleA Unicode string is defined in Python and can be preceded by a string of u:Str=u"helloworld"In
Python prints Unicode in Dict to ChineseImport JSONA = {u ' content ': {u ' address_detail ': {u ' province ': U ' \u5409\u6797\u7701 ', U ' city ': U ' \u957f\u6625\u5e02 ', U ' street_ Number ': U ', u ' district ': U ', u ' street ': U ', U ' city_code ': +, U ' point ': {u ' y ': U ' 43.89833761 ', U ' x ': U ' 125.31364243 '} , U ' address ': U ' \u5409\u6797\u7701\u957f\u6625\u5e02 '}, U ' status ': 0
This article mainly introduces some knowledge about the string manipulation and encoding Unicode in Python, so I don't want to say a few words, so we need to learn from them.
String type
str: A Unicode string. Strings constructed with ' or R ' are all str, and single quotes can be substituted with double or triple quotes. In either case, there is no difference
Many articles have mentioned import codecs. Indeed!
But some only consider UTF-8 when processing Unicode, or a simple UTF-16.
But it is easy to report errors when using the UTF-16, the reason is that the UTF-16 will detect BOM (byte order mark) by default, if some files are not created, then Python cannot read normally, this is to consider utf_16_le and so on.
------------------------------------Utf_16, utf
Passing a string error when using FreeSWITCH to make Python calls with ESLTypeError:in ' Eslconnection_api ',2' char const * ' is because Python passes the string Unicode, the ASCII code used in the C language Char modeDo the conversion in Swig, the code is as followsModify File Esl_wrap.cpp#####/* for C or C + + function pointers */Add definition#define SWIG
The Python development team recently released Python 2.7 RC2, which mainly modifies and improves bugs and deficiencies in earlier versions. The following are some improvements in the latest version:
◆ Improved settings for clearing functions and classes/modules;
◆ Solved the problem of searching for Visual Studio 2008 in Windows x64;
◆ Fixed the problem caused by using the unmodified libffi library o
Python reads and writes unicode files,
This document describes how to read and write unicode files in Python. Share it with you for your reference. The specific implementation method is as follows:
# Coding = UTF-8 import OS import codecs def writefile (fn, v_ls): f = codecs. open (fn, 'wb', 'utf-8') for I in v_ls: f
Vs2013 Create python file, in the file is not entered in Chinese, encoded as utf-8 ,Then, after entering a few lines of Chinese, again with notepad++ to see its code as follows, in vs Run also error (run with cmd will not):Based on the experience, this is the problem of character encoding, try to convert the python file into utf-8 , directly on the notepad++ turn utf-8 no BOM encoded format, save, open vs,
Python character and character value (ASCII or Unicode code value) conversion method, pythonunicode
Purpose
Converts a character to an ASCII or Unicode code, or vice versa.
Method
For ASCII codes (0 ~ Range: 255)Copy codeThe Code is as follows:>>> Print ord ('A ')65>>> Print chr (65)A
For Unicode characters, note
Online collection of 2 ways:
A:
Similar to:
\u3232\u6674
String, converted to the corresponding Unicode character.
"Resolution Process"
The corresponding, can be decoded through the Python decode function, where the original string bit unicode-escape, it can be.
The complete Python code demo is:
Slashustr = \
experimentImportunicodedatan_s1= Unicodedata.normalize ('NFC', s1) n_s2= Unicodedata.normalize ('NFC', S2)Print('n_s1 = = n_s2?', n_s1 = =n_s2)Print('len (n_s1) =', Len (N_S1),'Len (N_S2)', Len (n_s2))Print('*****************************')#(d) Example of normalizing to a decomposed form and stripping accentsT1 = Unicodedata.normalize ('NFD', s1) T2= Unicodedata.normalize ('NFD', S2)Print('T1 = = t2?', t1==T2)Print('len (t1) =', Len (T1),'len (t2) =', Len (T2))Print("'. Join (c forCinchT1if not
As an example,>>> u‘\u6ce8\u91ca‘>>> su‘\u6ce8\u91ca‘>>> print s注释>>> print‘unicode‘>>>> print s.encode(‘gbk‘)注释The string pre-plus U is expressed as Unicode encoding, and the Unicode encoding of the current text can be set,For example, the Utf-8 code is the first line plus:# -*- coding: utf-8 -*-And the GBK code is# -*- coding: gbk -*-ReferencePython Chinese encodingDetailed
1.pocket APIThe Pocket new API does not allow you to send a username and password directly, so you need to apply for the app's Consumer_key, then Get_request_token, get a request_token, and then Consumer_ Key and Request_token use a browser to access the authorize website, then manually click Authorize and then return to Access_token. In the future, the use of Consumer_key and Access_token in the application can be used to the operation of the account (add, delete).It's very well implemented in
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