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This article mainly introduces the Python os package and os.path module how to use, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

1. Common methods of os 1. Get the current path os.getcwd () # coding:utf-8import osif _ _ name__ ='_ _ main__': print (os.getcwd ()) # G:\ workSpace\ py_d2. Get the files and directories under the specified path. Os.listdir (path) returns a list# coding:utf-8import osif _ _ name__ = ='_ main__': print (os.listdir (os.getcwd () # [.idea', 'main.py',' os_module.py', 'sk'] 3. Create a directory (level 1) os.mkdir (paht)

Os.mkdir (path) create a directory:

Errors can be reported in the following two situations:

two。 The parent directory to create the directory does not exist (a does not exist, then the b directory cannot be created)

3. The directory to be created already exists (if b exists, the b directory cannot be created)

# coding:utf-8import osif _ _ name__ = ='_ main__': os.mkdir ('sk/a/b') # create a b directory in the current sk/a directory # os.mkdir (os.path.join (os.getcwd (),' sk','a directory,'b')) is the same as above, except that the absolute path 4. Delete the file os.remove (path) # coding:utf-8import osif _ _ name__ ='_ _ main__': "os.remove (path) requires that the path is a file and exists" os.remove ("sk/a/b/503.py") # os.remove (os.path.join (os.getcwd (), 'sk',' asides, 'baked,' 503.py')) as above It's just that the path was replaced by an absolute path of 5. Recursively delete empty directory os.removedirs (path) # coding:utf-8import osif _ _ name__ ='_ _ main__': "os.removedirs (path) if the lowest directory is not empty, directly report an error (S2 is not empty) delete from the bottom directory to the top directory (delete S2, then S1) Stop when the directory to be deleted is not empty (stop if S1 is not empty) "" os.removedirs ('s 1 Universe S2') # os.removedirs (os.path.join (os.getcwd (),'s 1 directory,'s 2') is the same as above, except that the absolute path 6. Delete the empty directory os.rmdir (path) # coding:utf-8import osif _ _ name__ ='_ _ main__': "" os.rmdir (path) path does not exist and if it is not empty, the error "os.rmdir ('S1Uniple s2') 7. Create a multi-level directory os.makedirs (path) # coding:utf-8import osif _ _ name__ ='_ _ main__': "os.makedirs (path,exists_ok=False) create a multi-level directory if the path directory already exists, you can set the exist_ok parameter to suppress the error. If exist_ok is not equal to False, an exception will not be thrown"os.makedirs (" s1/s3 ") os.makedirs (" s1/s3 ") Exist_ok=True) II. Os.path common methods 1. Path splicing os.path.join (path2,path3 …) # coding:utf-8import osif _ _ name__ ='_ main__': "os.path.join (path2,path3.) splices multiple paths to form a new path" print (os.path.join (os.getcwd (),'S1,'S2')) # G:\ workSpace\ py_d\ S1\ S22. Path separation os.path.split (path) returns tuple# coding:utf-8import osif _ _ name__ = ='_ main__': "os.path.split (path) split path, and returns a tuple, which is composed of two elements. The second element is the directory of the last layer in the path or the file. The first element is the path remaining in the path after excluding the second element. You can have the empty string "" path = os.path.join (os.getcwd (),'S1, 's2') print (path) # G:\ workSpace\ py_d\ S1\ s2.my print (os.path.split (path)) # (' G:\\ workSpace\\ py_d\\ S1, 's2.my') print (os.path.split (' dir1')) # ('', 'dir1') 3. Determine whether it is a directory os.path.isdir (path) # coding:utf-8import osif _ _ name__ ='_ _ main__': "os.path.is_dir (path) determine whether the path is a directory, and return False"print (os.path.isdir (os.getcwd () # True print (os.path.join (os.getcwd ()) if the path does not exist. 'main.py')) # False this is the file print (os.path.isdir (' http://xxx.com')) # returns False4 if it does not exist). Determine whether it is a file os.path.isfile (paht) # coding:utf-8import osif _ _ name__ ='_ _ main__': "os.path.is_file (path) determine whether the path is a file, and return False"print (os.path.isfile (os.getcwd () # False if the path does not exist. This is the directory print (os.path.isfile (os.path.join (os.getcwd (). )) # True is the file print (os.path.isfile (os.path.join (os.getcwd (), 'abc') # False returns False5 if it does not exist. Determine whether the path exists os.path.exists (path) # coding:utf-8import osif _ _ name__ = ='_ main__': "os.path.exists (path) determines whether the path is a file, and returns False"print (os.path.exists (os.path.join (os.getcwd ()) if the path does not exist.) ) # True main.py exists print (os.path.exists (os.path.join (os.getcwd (), 'abc.py') # False abc.py does not exist 6. Determine whether a path is an absolute path os.path.isabs (path) # coding:utf-8import osif _ _ name__ = ='_ main__': "os.path.abs (path) determine whether a path is an absolute path Irrelevant to the existence of "" print (os.getcwd ()) # G:\ workSpace\ py_d print (os.path.isabs (os.path.join (os.getcwd (), 'main.py')) # True main.py exists print (os.path.isabs (os.path.join (os.getcwd () )) # True abc.py does not exist print (os.path.isabs ('a _ abc.py')) # False thank you for reading this article carefully I hope the article "how to use Python's os package and os.path module" shared by the editor will be helpful to you. At the same time, I also hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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