The Python standard library os.path package the glob package USES instances

OS. The path

String path OS. Path package is mainly used for processing, such as'/home/zikong/doc/file. Doc ', to extract the useful information.

import os.path

path = '/home/zikong/doc/file.doc'
print(os.path.basename(path))    #  Query the file name contained in the path 

print(os.path.dirname(path))     #  Query the directory contained in the path 
info = os.path.split(path)       #  Split the path into file names and directories and return them in a table 

path2 = os.path.join('', 'home', 'zikong', 'doc', 'file.doc')  # Use the directory name and file name to form a path string 
p_list = [path, path2]

print(os.path.commonprefix(p_list))    #  Query common parts of multiple paths 
os.path.normpath(path) #  Get rid of the path path Redundancy in. Such as '/home/vamei/../.' Be converted to '/home'

#os.path You can also query the file for information (metadata) . Information about the file is not stored inside the file, but by the operating system 

# Maintain 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 for the existence of a file 
print(os.path.getsize(path))   #  Query file size 

print(os.path.getatime(path))  #  Query when the file was last read 

print(os.path.getmtime(path))  #  Query when the file was last modified 
print(os.path.isfile(path))    #  Whether the path points to a regular file 

print(os.path.isdir(path))     #  Whether the path points to a directory file 

Glob package

Glob is python's own file operation-related module with very little content, which allows you to find files that fit your purpose, similar to file search under Windows, and also supports wildcards, & # 63; ,[], representing 0 or more characters, ? Represents a character that [] matches a character in a specified range, such as [0-9] matches a number.

Glob method: returns a list of all matched file paths. This method requires an argument to specify the matched path string (which can be either an absolute or a relative path), for example:

import glob

glob.glob("/home/zikong/doc/*.doc")

/home/zikong/doc/file1.doc /home/zikong/doc/file2.doc

example

Combined use of two packages to write a similar to the ls function under Linux:

#coding = utf8

import glob

import os.path

path = '/Users/zikong/Pictures'

def ls(path):

        #codinf = utf8

        print "--name--   --type--  --size--  --atime--  --mtime-- "

        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)

Pay attention to

#coding=utf

It's for python to display Chinese