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Python's Logging module summary:1 #!/usr/bin/python2 #Encoding=utf-83 4 ImportLogging5 6Logging.basicconfig (level=logging. DEBUG,7format='% (asctime) s% (filename) s[line:% (lineno) d]% (levelname) s% (message) s',8datefmt='%a,%d%b%Y%h:%m:%s',9Filename='MYTEST.log', filemode='W')Ten One #Define a Streamhandler Aconsole =logging. Streamhandler () - console.setlevel (logging.info) -Formatter = logging. Formatter ('% (name) -12s:% (levelname) -8s% (mes

number (uppercase) printf (" % + d = % + d", $ Num1); // symbol specifier (positive) printf (" % + d = % + d", $ Num2); // symbol specifier (negative)?> Example 4 Demonstration of string specifiers: ",$str1);printf("[%8s]",$str1);printf("[%-8s]",$str1);printf("[%08s]",$str1);printf("[%'*8s]",$str1);printf("[%8.8s]",$str2);?> The above in-depth understanding

specified variable value) . [0-9] (Specify the number of decimal digits or the maximum string length) Note: If you use more than one of the above format values, they must be used in the order above and cannot be disrupted. Arg1 Necessary. Specifies the parameter that is inserted into the first% symbol in the format string. Arg2 Necessary. Specifies the parameter that is inserted into the second% symbol in the format string. arg++ Option

]" , $str 1);p rintf ("[%8s]" , $str 1);p rintf ("[%-8s]" , $str 1);p rintf ("[%08s]" , $str 1);p rintf ("[% ' *8s]" , $str 1);p rintf ("[%8.8s]" , $str 2);? > Run online Original address: http://www.manongjc.com/article/867.html http://www.bkjia.com/PHPjc/1128122.html www.bkjia.com true http://www.bkjia.com/PHPjc/1128122.html techarticle php printf () output f

):File "chinesetest. py", line 3, inPrintOpen ("test.txt"). Read (). Decode ("UTF-8 ")Unicodeencodeerror: 'gbk' codec can't encode character U'/ufeff 'inPosition 0: Illegal multibyte Sequence Originally, some software, such as Notepad, will insert three invisible characters at the beginning of the file when saving a file encoded in UTF-8 (0xef 0xbb0xbf (BOM ).Therefore, we need to remove these characters during reading. The codecs module in Python defines this constant:# Coding = GBKImport code

. Decode ("UTF-8 ")Result: ABC (Chinese) (4) A few issues left behindIn the second part, we use the Unicode function and decode method to convert STR to Unicode. Why do the parameters of these two functions use "GBK?The first response is that GBK (# Coding = GBK) is used in our encoding statement, but is it true?Modify the source file:# Coding = UTF-8S = "Chinese"Print Unicode (S, "UTF-8 ")Run, error:Traceback (most recent call last ):File "chinesetes

the UTF-8 encoded binaryFive, Python2 and Python3 coding difference1. There are two types of string in Python2 str and UnicodeSTR typeWhen the Python interpreter executes the code that produces the string (for example, s= ' forest '), it requests a new memory address and then encodes the ' forest ' into the encoding format specified at the beginning of the file, which is already the result of encode, so s can only be decode. Again encode will be an error.#_ *_coding:gbk_*_2 #!/usr/bin/env pytho

and filename are specified simultaneously3. Output logs to both file and screen at the same time Import loggingLogging.basicconfig (level=logging. DEBUG,format= '% (asctime) s% (filename) s[line:% (lineno) d]% (levelname) s% (message) s ',Datefmt= '%a,%d%b%Y%h:%m:%s ',Filename= ' Myapp.log ',Filemode= ' W ')##################################################################################################定义一个StreamHandler, print Info-level or higher log information to a standard err

redirection for Output Route-n|awk ' Nr!=1{print} ' >./fsformatted outputNetstat-anp|awk ' {printf '%-8s%-8s%-10s\n ", $1,$2,$3} ' printf represents a format output% formatted output delimiter-8 length of 8 characters s means the string type prints the first three fields per line, Specifies the first field output string type (length 8), the second field output string type (length 8), the third field output

default values for each parameter fromColorlogImportColoredformatterformatter=Coloredformatter ("% (Log_color) s% (levelname) -8s% (reset) s% (blue) s% (message) s", Datefmt=None, Reset=True, Log_colors={ 'DEBUG':'Cyan', 'INFO':'Green', 'WARNING':'Yellow', 'ERROR':'Red', 'CRITICAL':'Red,bg_white',}, Secondary_log_colors={}, Style='%')2. Use of Secondary_log_colorsThe secondary log color is a method of selecting mult

and filename are specified simultaneously3. Output logs to both file and screen at the same time Import loggingLogging.basicconfig (level=logging. DEBUG,format= '% (asctime) s% (filename) s[line:% (lineno) d]% (levelname) s% (message) s ',Datefmt= '%a,%d%b%Y%h:%m:%s ',Filename= ' Myapp.log ',Filemode= ' W ')##################################################################################################定义一个StreamHandler, print Info-level or higher log information to a standard err

This article summarizes some simple basic output format form, the following words do not say more, to see the detailed introduction bar. A, print string >>> print "I ' m%s"% ("Jihite") I ' m jihite Second, print integer >>> print "I ' m%d years old" (%) i ' M years old Third, printing floating point numbers >>> print "π=%f"% (3.1415926) π=3.141593 Printing floating-point numbers (specify how many decimal places to keep) >>> print "π=%.3f"% (3.14159

Read Catalogue 1. Print a string 2. Printing integers 3. Print floating-point numbers 4. Print floating-point numbers (Specify the number of decimal places reserved) 5. Specify the placeholder width 6. Specify the placeholder width (left-justified) 7. Specify placeholders (only 0 placeholders) 8. Scientific counting method 1. Print a string>>> print "I ' m%s"% ("jihite") I ' m jihite2. Printing integers>>> print "I ' m%d years old"% (+) I ' M years old3.

()Level: Sets the log levels by default to logging. WARNINGStream: Specifies the output stream that will log, can specify output to Sys.stderr,sys.stdout or file, default output to Sys.stderr, stream is ignored when stream and filename are specified simultaneously3. Output logs to both file and screen at the same time Import loggingLogging.basicconfig (level=logging. DEBUG,format= '% (asctime) s% (filename) s[line:% (lineno) d]% (levelname) s% (message) s ',Datefmt= '%a,%d%b%Y%h:%m

This article comes from NetEase cloud community. Time Wheel ImplementationA time wheel is a circular data structure, divided into multiple lattices.Each lattice represents a period of time, the shorter the time, the higher the accuracy.Each grid is saved with a list of expired tasks in that grid.The pointer rotates over time and executes the expiration task in the corresponding grid.Noun Explanation: Time Lattice: a block in a circular structure for storing delayed tasks Pointer: A time

Parameters:#Retention Parameters:#Compression Parameters:Compress-algorithm = NoneCompress-level = 6[Email protected] ~]$ pg_probackup backup-b/backupdir-b full--instance pg10Info:wait for Pg_stop_backup ()Info:backup OVKYC7 Completed[Email protected] ~]$Incremental backup[Email protected] ~]$ pg_probackup backup-b/backupdir-b PAGE--instance pg10Info:wait for LSN 0/4000028 in archived WAL segment/backupdir/wal/pg10/000000010000000000000004Info:wait for Pg_stop_backup ()Info:backup Ovkyme Comple

_z16dispatch_command19enum_server_commandp3thdpcj:query-start 12:32:31 [emailprotected] Connect Ion Id:5 Database:datAbase Query:select * from Foo Example 2Save the script below as STATEMENT.D.#!/usr/sbin/dtrace-s#pragma D option quietdtrace:::begin{printf ("%-60s%-8s%-8s%-8s\n", "Query", "ROWSU", "ROWSM", " Dur (ms) ");} Mysql*:::update-start, mysql*:::insert-s

① output Route-n|awk ' Nr!=1{print > './fs '} ' ② use redirection for Output Route-n|awk ' Nr!=1{print} ' >./fsformatted outputNetstat-anp|awk ' {printf '%-8s%-8s%-10s\n ", $1,$2,$3} ' printf represents a format output% formatted output delimiter-8 length of 8 characters s means the string type prints the first three fields per line, Specifies the first field output string type (length 8), the second field

Ubuntu7.10 hard disk installation with image text (alternate version, text installation Interface) 1. Download The Ubuntu7.10 CD image first download the CD image required for hard disk installation. I like to use ubuntu-7.10-alternate-i386.iso for hard disk installation. : X86: http://releases.ubuntu.com/releases/7.10/ubuntu-7.10-alternate-i386 Ubuntu7.10 hard

the DLL search path. Alternate search order for desktop applications The standard search order used by the system can be changed by callingLoadLibraryExFunctionLoad_with_altered_search_path. The standard search order can also be changed by callingSetdlldirectoryFunction. Windows XP:Changing the standard search order by calling SetdlldirectoryIs not supported until Windows XP with Service Pack 1 (SP1 ). If you specify an