Python basics 6: formatting characters, colors, and python Basics
Character formatting:
1.% placeholder, % s, % d, %
2. Use format. The format is easy to use. It can be centered, %, binary, and character-filling;
1. Use Case of %
Tp1 = "I am % s" % "aaa "#Tp2 = "I am % s age % d" % ("alex", 18) # sequential AssociationTp3 = "I am % (name) s age % (age) d" % {"name": "alex", "age": 18} # specify the name and nameTp4 = "percent %. 2f" % 99.567 # number of decimal places reservedTp5 = "I am % (pp
Python basics 6: formatting characters, colors, and python Basics
Character formatting:
1.% placeholder, % s, % d, %
2. Use format. The format is easy to use. It can be centered, %, binary, and character-filling;
1. Use Case of %
Tp1 = "I am % s" % "aaa "#Tp2 = "I am % s age % d" % ("alex", 18) # sequential AssociationTp3 = "I am % (name) s age % (age) d" % {"name": "alex", "age": 18} # specify the name and nameTp4 = "percent %. 2f" % 99.567 # number of decimal places reservedTp5 = "I am % (pp
evidence that the memory used by Java applications is leaking, then we typically use the following steps to analyze
00001. Dump the heap used by the Java application
00002. Use the Java Heap Analysis tool to identify suspects in memory usage that exceeds expectations (typically because of too many)
00003. When necessary, the reference relationship between the suspect and other objects needs to be analyzed.
00004. View the source code of the program t
=" 370 "title=" clip_image025 "style=" Border-top:0px;border-right:0px;background-image: none;border-bottom:0px;padding-top:0px;padding-left:0px;border-left:0px;padding-right:0px; "alt=" clip_image025 " Src= "http://s3.51cto.com/wyfs02/M02/76/CD/wKioL1Zc-WKR2w-EAADSR0SoJ_o886.jpg" border= "0"/>3. Install Microsoft Hyper-V Server:Microsoft Hyper-V server is a Microsoft-provided version of Hyper-V that does not have a GUI interface, which is what we call a bare metal installation. Microsoft Hyper-
before. and TCP/IP was first implemented in UNIX system, considering the characteristics of computer network, it is more suitable for the realization and use of computers.
Connection ServiceThe OSI network layer corresponds to the Internet layer of TCP/IP, the functions of the two are basically similar, but the addressing method has a great difference.The OSI address space is not fixed variable length, determined by the selected address naming method, up to 160byte, can accommodate a very lar
WSUS preparation prior to SCCM deploymentWSUS is a Microsoft standalone product that updates server-based distribution to Windows systems. WSUS also uses WUA to scan the applicability of patches and subsequently installs updates provided by WSUS. The version of WSUS 3.0 Service Pack 2 is embedded in Windows Server R2. Because SCCM TP4 only supports 64-bit site systems, we must use one of the 64-bit versions of Windows Server support for 64-bit version
representation and then formats (uppercase X)
Three methods of representation" numbers: {: b},{:o},{:d},{:x},{:x}, {:%},{:c} ". Format (all, 15.87623,65,"numbers: {0:b},{0:o},{0:d},{0:x},{0:x}, {0:%} , {1:c}". Format (15,65"numbers: {num:b},{num:o},{num:d},{num:x},{num:x}, {num: %},{CC:C}". Format (num=15,cc=65)Print(A1)print (A2) Print (A3)Execution Result:Numbers:1111,17,15,f,f, 1587.623000%,aNumbers:1111,17,15,f,f, 1500.000000%,aNumbers:1111,17,15,f,f, 1500.000000%,a, "optional" adds a
(if scientific counts are e;)
G, auto-adjust convert integers, floating-point numbers to floating-point or scientific notation (more than 6 digits in scientific notation), and format them to a specified location (if scientific counts are e;)
%, when there is a format flag in the string, a percent sign is required
Note: There is no way to automatically convert an integer to a binary representation in Python with a percent-semicolon formatPractice:" I am%s " " Tiantian " Print (TP1)O
before. and TCP/IP was first implemented in UNIX system, considering the characteristics of computer network, it is more suitable for the realization and use of computers.
Connection ServiceThe OSI network layer corresponds to the Internet layer of TCP/IP, the functions of the two are basically similar, but the addressing method has a great difference.The OSI address space is not fixed variable length, determined by the selected address naming method, up to 160byte, can accommodate a very la
part, as shown below.200.0. 0.00000000Host SectionBecause subnets need to be assigned to four departments, 4 subnets are required . And since subnets with subnet number 0 and full 1 are not available, at least 6 subnets are required. According to the company 2n-2 ≥ the required number of subnets, at this time n=3, can be divided into 8 subnets . Network number host address range broadcast addressThe subnet number is all 0, do not use001 200.0.0.32/27 001 0
/oradata/Robinson/datafile/o1_mf_robinson_5h248ywc_.dbf ';8> Restore database;9> switch datafile all;10> recover database;11> alter database open;12>}
Executing command: Set newnameUse the target database control file to replace the recovery directory
Executing command: Set newname
Executing command: Set newname
Executing command: Set newname
Executing command: Set newname
Start the restore from April 11 to April 9Allocated channel: ora_disk_1Channel ora_disk_1: SID = 155 devtype = Disk
Channel
There is a problem with a client database that has been recovered through unconventional methods AWR cannot collect statistics (a library that was not recovered several months ago, because it was not rebuilt), and it is not easy to track database performance to help analyze the tracking problem.Manual Collection Statistics Error RA-00001: Violation of a unique constraint (SYS. WRM$_SNAPSHOT_PK)
Sql> execute Dbms_workload_repository.create_snapshot ();
Label:Recover Data from Oracle database partitioned tables using Oracle Dul Data Recovery Tool Create a Sales Partition table case CREATE TABLE SALES
(
product_id VARCHAR2 (5),
sales_date DATE,
sales_cost number,
STATUS VARCHAR2 ()
PARTITION by
RANGE (sales_date) subpartition by
LIST (STATUS)
subpartition TEMPLATE
(
subpartition SUB1 values (' ACTIVE '),
subpartition SUB2 values (' INACTIVE ')
)
(
PARTITION P1 values less THAN (to_date (' 2003-01-01 ', '
is 4 times, error = 0 is the number of communication errors, 0 times in the figure, ID = 1 indicates the device address of the analog Modbus sub-device, the address in the figure is 1;f = 03 means the Modbus function code used, the figure is 03 function code; SR = 1000ms indicates the scan cycle. The Scarlet Letter section, which indicates the current error state, "No Connection" indicates the disconnected state.3), Parameter settings:In the menu "Setup", click "Read/write Definition. F8 "param
deal with a large number of requests like squid, MySQL, Java and other single processes is a bit stretched. If the number of file handles opened by a single process exceeds the system-defined value, the error message "Too many files open" is mentioned. How do I know how many file handles the current process has opened? Here are some little feet that can help you see:00001. Lsof-n |awk ' {print $} ' |sort|uniq-c |sort-nr|moreDuring peak system access
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