Python standard library Os.path packages, Glob package usages _python

Os.path Bag

Os.path packages are primarily used to handle string paths, such as '/home/zikong/doc/file.doc ', to extract useful information.

Copy Code code as follows:

Import Os.path
Path = '/home/zikong/doc/file.doc '

Print (Os.path.basename (path)) # The file name contained in the query path
Print (Os.path.dirname (path)) # The directory contained in the query path

info = os.path.split (path) # divides paths into file names and directories two parts, and returns them in a table
path2 = Os.path.join (' \ ', ' home ', ' Zikong ', ' Doc ', ' File.doc ') #使用目录名和文件名构成一个路径字符串

P_list = [path, path2]
Print (Os.path.commonprefix (p_list)) # Querying common parts of multiple paths

Os.path.normpath (PATH) # removes redundancy from path paths. For example, '/home/vamei/. /.' be converted to '/home '
#os. Path can also query for information about the file (metadata). The information about the file is not stored inside the file, but by the operating system
#维护的, some information about the file (such as file type, size, modification time).

Import Os.path
Path = '/home/vamei/doc/file.txt '

Print (os.path.exists (path)) # Query whether a file exists

Print (os.path.getsize (path)) # query File size
Print (Os.path.getatime (path)) # Query the time the file was last read
Print (Os.path.getmtime (path)) # Query when the file was last modified

Print (Os.path.isfile (path)) # Path points to regular files
Print (Os.path.isdir (path)) # path point to directory file

Glob bag

Glob is a file-operation-related module with Python's own it's not much, it can look for files that fit your purpose, similar to a file search under Windows, and it also supports wildcards,,?, [] These three wildcards, representing 0 or more characters? Represents a character, [] Matches the specified range of characters, such as [0-9] matching digits.

Glob method: Returns a list of all matching file paths that require a parameter to specify a matching path string (This string can be either an absolute or a relative), such as:

Copy Code code as follows:

Import Glob
Glob.glob ("/home/zikong/doc/*.doc")
/home/zikong/doc/file1.doc/home/zikong/doc/file2.doc

Example

Comprehensive utilization of two packages of a similar to Linux under the LS function:

Copy Code code as follows:

#coding = UTF8
Import glob
Import os.path
Path = '/users/zik Ong/pictures '
def ls (path):
        #codinf = UTF8
         print "--name--  --type-- --size-- --atime-- --mtime--"
& nbsp;       Path = path + '/* '
        filelist = Glob.glob (path)
        for filepath in filelist:
                 out = '%s %s %s %s % S '% (filepath.split ('/') [4], Os.path.isfile (filepath), os.path.getsize (filepath), Os.path.getatime (filepath), Os.path.getmtime (filepath))
                 Print out

ls (path)

Attention

Copy Code code as follows:

#coding =utf

is to enable Python to display Chinese