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parameter is the Peugeot bit, which controls how regular expressions are matched, such as case sensitivity, multiline matching, and so on.The return value of the function is true or FALSE.For example: Match (' P ', ' Python ') return value is true; Match (' P ', ' www.python.org ') return value is false.Definition: Re.search looks for the first substring in a given string that matches a given regular expression.The return value of the function: Returns the value if found, otherwise returns none

What is serialization?　　Serialization is the ability to convert the data type in memory into a string so that it can be stored on the hard disk or transferred to the remote in the network, because the hard disk and the network transmit only receive bytesTwo modules for serialization1. JSON for conversions between string and Python data types2. Pickle for conversion between Python-specific data types and Python data typesThe JSON module provides 4 functions: dumps, dump, loads, and load can be cr

The LS command is the most commonly used command under Linux. The LS command is the abbreviation for list. LS is used to print out the list of current directories if LS specifies a different directory then the list of files and folders in the specified directory will be displayed. The LS command not only allows you to view the files contained in a Linux folder but also to view file permissions (including directories, folders, file permissions) to view directory information, and so on. The LS com

Linux Desktop selection:First batch: Heavy-weight Desktop---Features complex, the interface is fancy, resource-intensive, may be unstableGNOME3/2, KDE, UnitySecond batch: Lightweight Desktop---Flagship simplicity, save resources, fast and stable performanceLXDE, XFCE, Cinnamon, Mate, Standard,...LXDE is a lightweight desktop with the best performance, the most streamlined, the most memory-saving, the package is not interdependent, and therefore more s

1. ls command:List abbreviations, viewing files in a directoryls [options] [directory name]DOS command: dir2. Common parameters:-a,–all lists all files under the directory, including the. The implied file at the beginning-A with-a, but not listed "." (represents the current directory) and ".." (Represents the parent directory of the current directory).-C mate-lt: Sort and display CTime according to CTime (the last time the file status changed)

The LS command is the most commonly used command under Linux.The LS command is the abbreviation for list. LS is used to print out the list of current directories if LS specifies a different directory then the list of files and folders in the specified directory will be displayed. The LS command not only allows you to view the files contained in a Linux folder but also to view file permissions (including directories, folders, file permissions) to view directory information, and so on. The LS comm

file permissions (including directories, folders, file permissions) to view directory information, and so on. The LS command is used in a lot of everyday Linux operations!1. Command format:ls [options] [directory name]2. Command function: lists all subdirectories and files in the target directory. 3. Common parameters:-a,–all lists all files under the directory, including the. The implied file at the beginning-A with-a, but not listed "." (represents the current directory) and ".." (Represents

inode number of each file-K is the –block-size=1k that represents the size of the file in K-byte form.-l lists the permissions, owner, file size, and so on, in addition to the file name.-l,–dereference when displaying the file information for a symbolic link, displays the object indicated by the symbolic link instead of the information of the symbolic link itself-m all items are separated by commas and fill the entire row width-r,–recursive listing all subdirectory tiers at the same time-F, wh

follows:echo "Lanni--here is the text" |mutt-s "ilanni-test" [email protected] [email protected]Through, we can see that mutt really can support bulk mail.7.2 Send AttachmentsUse mutt to send messages to both email protected and [email protected] and add attachments testilanni1,testilanni2. The contents of the annexes Testilanni1 and Testilanni2 are this is a test. As follows:The mutt command is as follows:echo "Lanni--here is the test accessory" |mutt-s "ilanni-test" [email protected] [email p

. LS is used to print out the list of current directories if LS specifies a different directory then the list of files and folders in the specified directory will be displayed. The LS command not only allows you to view the files contained in a Linux folder but also to view file permissions (including directories, folders, file permissions) to view directory information, and so on. The LS command is used in a lot of everyday Linux operations!1. Command format:ls [options] [directory name]2. Comm

displayed. The LS command not only allows you to view the files contained in a Linux folder but also to view file permissions (including directories, folders, file permissions) to view directory information, and so on. The LS command is used in a lot of everyday Linux operations!1. Command format:ls [options] [directory name]2. Command function:Lists all subdirectories and files in the destination directory.3. Common parameters:-a,–all lists all the files in the directory, including the hidden

The LS command is the most commonly used command under Linux.The LS command is the abbreviation for list. LS is used to print out the list of current directories if LS specifies a different directory then the list of files and folders in the specified directory will be displayed. The LS command not only allows you to view the files contained in a Linux folder but also to view file permissions (including directories, folders, file permissions) to view directory information, and so on. The LS comm

is used to print out the list of current directories if LS specifies a different directory then the list of files and folders in the specified directory will be displayed. The LS command not only allows you to view the files contained in a Linux folder but also to view file permissions (including directories, folders, file permissions) to view directory information, and so on. The LS command is used in a lot of everyday Linux operations!1. Command format:ls [options] [directory name]2. Command

The LS command is the most commonly used command of Linux, and the LS command is the abbreviation for list, the main function is: Print out the current directory of the list. If LS specifies a different directory, then the list under the specified directory is displayed.1. Command formatls [options] [directory name]2. Command functionList all subdirectories and files under the directory3. Common parameters-A all out of all directory files, including the. Example of a hidden file at the beginning

"" "" "is the Content" ""Boolean value (logical judgment)Boolean (bool) only two values True (True) False (false), mainly used for logical judgments.The first letter of the Boolean value is capitalized.Type (data attribute judgment)Determine what data type the decision object belongs toName = input (' Please enter your name: ')Age = input (' Please enter your ages: ')Print (Name,age,type (name), type (age))Input (content interaction)Input is the most basic content interaction and is primarily u

The LS command is the most commonly used command under Linux.The LS command is the abbreviation for list. LS is used to print out the list of current directories if LS specifies a different directory then the list of files and folders in the specified directory will be displayed. The LS command not only allows you to view the files contained in a Linux folder but also to view file permissions (including directories, folders, file permissions) to view directory information, and so on. The LS comm

The LS command is the most commonly used command under Linux.The LS command is the abbreviation for list. LS is used to print out the list of current directories if LS specifies a different directory then the list of files and folders in the specified directory will be displayed. The LS command not only allows you to view the files contained in a Linux folder but also to view file permissions (including directories, folders, file permissions) to view directory information, and so on. The LS comm

Http://www.cnblogs.com/peida/archive/2012/10/23/2734829.htmlThe LS command is the most commonly used command under Linux.The LS command is the abbreviation for list. LS is used to print out the list of current directories if LS specifies a different directory then the list of files and folders in the specified directory will be displayed. The LS command not only allows you to view the files contained in a Linux folder but also to view file permissions (including directories, folders, file permis

be displayed. The LS command not only allows you to view the files contained in a Linux folder but also to view file permissions (including directories, folders, file permissions) to view directory information, and so on. The LS command is used in a lot of everyday Linux operations!1. Command format:ls [options] [directory name]2. Command function:Lists all subdirectories and files in the destination directory.3. Common parameters:-a,–all lists all the files in the directory, including the hidd

The LS command is the most commonly used command under Linux.ls command is the abbreviation of the list, the lack of saving LS used to print out the current directory of the list, if LS specifies a different directory, then the specified directory of files and folders will be displayed list.The LS command not only allows you to view the files contained in a Linux folder, but also to view file permissions (including directories, folders, file permissions) to view directory information, and so on.