commands to distinguish what type of data you want to manipulate.Types cannot be nested and cannot be mixed! But there's a king-fry: Set can change all types to string types1. String TypeSETGETDelAPPEND appended to the valueSet can be reset but if you want to add it, use append best for example:192.168.0.201:6379> SET hehe hellook192.168.0.201:6379> GET hehe "Hello" 192.168.0.201:6379> APPEND hehe, world (integer) 11192.168.0.201:6379> GET hehe "Hello,world"You can set multiple values and query
Process is running[Mon May 20 13:21:11 2013] [Notice] Child 1696: acquired the start mutex.[Mon May 20 13:21:11 2013] [Notice] Child 1696: Starting worker threads.[Mon May 20 13:21:29 2013] [ERROR] [Client 127.0.0.1] File does not exist:e:/web/myweb/feng.html[Mon May 20 13:21:30 2013] [ERROR] [Client 127.0.0.1] File does not exist:e:/web/myweb/feng.html[Mon May 20 13:21:52 2013] [ERROR] [Client 127.0.0.1] File does not Exist:e:/web/myweb/febo[Mon May 20 13:21:56 2013] [ERROR] [Client 127.0.0.1]
How should the regular expression match data similar to xf0x9fx91xab? How should the regular expression match xf0x9fx91xab. Please help! How to write an expression ?? Shared to: how should the regular expression match data similar to \ xf0 \ x9f \ x91 \ xab?
How should I match the regular expression \ xf0 \ x9f \ x91 \ xab. Please help! How to write an expression ??
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------ Solution -------
) the next reference will first read the file ending with pyc and load it directly to avoid repeated compilation.Python character typeType () view Character Types1. NumberInt integerLong integer (no long integer type after Python3)FloatComplex Number of complex2. Boolean ValueTrue and false1 and 03. StringString4. bytes byte typeMutual conversion between strings and binary bytesString. encode (encoding = "UTF-8") string to binary bytesBytes. decode (encoding = "UTF-8") binary conversion to a str
Unicode (UCS-2), this should be stored in this way:I 00000000 01001001 ' 00000000 00100111m 00000000 01101101 00000000 00100000 yuan 10000010 11010001 Hao 01100110 00001010This string occupies a total of 12 bytes, but compared with the binary code in English, you can find that the first 9 bits of English are 0! Wasting, wasting your hard drive, wasting your traffic. What to do? UTF8:I 01001001 ' 00100111m 01101101 00100000 yuan 11101000 10001011 10010
Python3 serialization and deserialization usage instance, python3 serialization
This article describes python3 serialization and deserialization usage. Share it with you for your reference. The details are as follows:
# Coding = utf-8import pickleaa = {} aa ["title"] = "I am a good guy" aa ["num"] = 2 t = pickle. dumps (aa) # serialize this dictionary print (t) f = pickle. loads (t) # deserialization to restore the original print (f) Status)
The running result is as follows:
(Dp0S 'num' p1I2
How the regular should match data like \xf0\x9f\x91\xab
I should be how to match \xf0\x9f\x91\xab. Please help! How to write an expression??
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------Solution--------------------If your string is utf-8, I am not mistaken, \xf0\x9f\x98\x83, etc. is a delimiter, the entire string should only have several forms, should be considered as a character (no word, only the placeholder, the role of separa
--160bit, SHA-256--256bit, SHA-512--512bitExample:>>>import Hashlib>>>HASHLIB.MD5 (b "Hello"). Digest ()B '][email protected]*\xbck*v\xb9q\x9d\x91\x10\x17\xc5\x92 '>>>HASHLIB.MD5 (b "Hello"). Hexdigest ()' 5d41402abc4b2a76b9719d911017c592 '1. Split the hexdigest as follows:5d 2a BC 4b 2a B9-9d c5 922, every 2 for hex conversion to hex (which is greater than 0x80 of the conversion, some of the 0x0~0x7f also need to transfer. Can getB '] A @ * \XBC K *
Here is a summary of several cases that will lead to coding problems, and explain one by one ...Case one: Chinese output is garbled?
# Python Version: 2.7.6
>>> string1 = "I love Fish C Studio"
>>> string1
' \xe6\x88\x91\xe7\x88\xb1\xe9\xb1\xbcc\xe5\xb7\xa5\xe4\xbd\x9c\xe5\xae\xa4 '
>>> Print string1
I love Fish C Studio
>>> string2 = "I Love FISHC"
>>> string2
' I Love FISHC '
Q: Why can't I display
Environment: Python 2.7.*
Practice:
In the. py file, add the
#-*-Coding:utf-9-*-
If you want to support Chinese, you must add u in front of Chinese, such as U ' I am pythoner '
Explain:>>> test1 = "I am Pythoner"
>>> test2 = u "I am Pythoner"
>>> test1' \xe6\x88\x91\xe6\x98\xafpythoner '>>> test2U ' \u6211\u662fpythoner '
>>> test11 = Test1.encode (' gb2312 ') Traceback (most recent call last): File " Unicodedecodeerror: ' ASCII ' codec can ' t
file's font name is "bold". To invoke multibyte file names in Pdflib, it must be in the form of bom+ UTF8. The form of the bom+ UTF8 of "blackbody" is "\xef\xbb\xbf\xe9\xbb\x91\xe4\xbd\x93".
So for the Chinese blackbody, under Chinese windows, then we use
Pdf_load_font (P, "\xef\xbb\xbf\xe9\xbb\x91\xe4\xbd\x93", 0, "Unicode", "");
Under Windows English, you should use the
Pdf_load_font (P, "Simhei", 0,
Tags: tab data ACK article create table jdbc row ble form submissionThis article references from: http://blog.csdn.net/wangchangshuai0010/article/details/12714575Java.sql.SQLException:Incorrect string value: ' \xe6\x88\x91\xe7\x9a\x84 ... ' for column ' GroupName 'Today, using MySQL to write data to MySQL in a Java program, the following error occurred:Java.sql.SQLException:Incorrect string value: ' \xe6\x88\x91
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