Python test if file is directory

How to Easily Check if a Path is a File or Directory in Python

Learn the different ways to check a path in Python using built-in methods like os.path, pathlib.Path, and others. Find out if a path is a file or directory with this comprehensive guide.

• Using the os.path.isdir() method
• Using the os.path.isfile() method
• Python | Check if Directory Exists
• Using the os.path.exists() method
• Using the os.listdir() method
• Using the os.makedirs() method
• Using the pathlib.Path module
• Other code samples for checking if a path is a directory in Python
• Conclusion
• How do you check if a file is a folder in Python?
• How can I check if something is a folder?
• How do you check if a file is a file in Python?
• How do you check if a folder exists and if not create it Python?

Python is commonly used in software development and information technology, and it provides various built-in methods and modules to interact with the operating system and manage files and directories. One common task is checking if a path is a file or a directory. In this blog post, we will explore the different ways to check if a path is a file or directory in Python, including using the os module, pathlib module, and other helpful functions.

Using the os.path.isdir() method

The os.path.isdir() method is used to check if a specified path is an existing directory. If the path is a directory, the method returns True; otherwise, it returns False.

import ospath = '/path/to/directory'if os.path.isdir(path): print(f' is a directory') else: print(f' is not a directory') 

/path/to/directory is a directory 

Using the os.path.isfile() method

To check whether a path is a file or directory, the os module can be imported and the isfile() method can be used to check if it is a file. If the path is a file, the method returns True; otherwise, it returns False.

import ospath = '/path/to/file.txt'if os.path.isfile(path): print(f' is a file') else: print(f' is not a file') 

Python | Check if Directory Exists

It’s easy enough to write a file to your current working directory in Python, but as soon as you Duration: 2:36

Using the os.path.exists() method

The os.path.exists() method is used to check if a file or directory exists. If the file or directory exists, the method returns True; otherwise, it returns False.

import ospath = '/path/to/file.txt'if os.path.exists(path): print(f' exists') else: print(f' does not exist') 

Using the os.listdir() method

The os.listdir() method can be used to find if a directory is empty or not. If the directory is empty, the method returns an empty list; otherwise, it returns a list of files and directories in the specified directory.

import ospath = '/path/to/directory'if not os.listdir(path): print(f' is empty') else: print(f' is not empty') 

/path/to/directory is not empty 

Using the os.makedirs() method

The os.makedirs() method can be used to create a directory if it does not exist. If the directory already exists, the method does not do anything.

import ospath = '/path/to/new/folder'if not os.path.exists(path): os.makedirs(path) print(f' created successfully') else: print(f' already exists') 

/path/to/new/folder created successfully 

Using the pathlib.Path module

The pathlib.Path module can be used to check if a path exists and whether it is a file or directory. The is_file() and is_dir() methods can be used to check if the path is a file or directory, respectively.

from pathlib import Pathpath = Path('/path/to/file.txt')if path.is_file(): print(f' is a file') else: print(f' is not a file')if path.is_dir(): print(f' is a directory') else: print(f' is not a directory') 

/path/to/file.txt is a file /path/to/file.txt is not a directory 

Other code samples for checking if a path is a directory in Python

import os print(os.path.isdir("/home/el")) print(os.path.exists("/home/el/myfile.txt"))

In Python , in particular, check if path is a folder python

import os# check the if the path is a directory print(os.path.isdir("path"))# check if the path is a file print(os.path.isfile("path")) 

In Python as proof, python check if folder exists code example

In Python , in particular, python check folder exist code example

import os os.path.isdir("/home/el") # Returns True if exist os.path.exists("/home/el/myfile.txt") # Return False if not exist

In Python , for instance, python check for folder code sample

>>> import os >>> os.path.isdir('new_folder') True

Conclusion

Python provides various built-in methods and modules to check if a path is a file or directory, such as os.path, os, and pathlib.Path. By using these methods, you can easily determine if a path points to a file or a directory and perform the appropriate actions. Remember to handle exceptions and use best practices when working with files and directories in Python.

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Python how to see if file is directory

Also, when creating paths, rather than using string functions, it’s better to use os.path.join() Then there are these (perhaps this is what you mean by «valid» files and directories)? os.path.isdir(path) os.path.isfile(path) Solution 1: Use for directories only: Use for both files and directories: Alternatively, you can use : Solution 2: Python 3.4 introduced the module into the standard library, which provides an object oriented approach to handle filesystem paths.

How to check if a file is a directory or regular file in python? [duplicate]

os.path.isfile("bob.txt") # Does bob.txt exist? Is it a file, or a directory? os.path.isdir("bob") 

more info here http://docs.python.org/library/os.path.html

Many of the Python directory functions are in the os.path module.

How do I check if directory exists in Python?, It will give boolean true the specified directory is available. os.path.exists («directoryorfile») It will give boolead true if specified directory or file is available. To check whether the path is directory; os.path.isdir («directorypath») will give boolean true if the path is directory Share answered Mar 26, 2018 at …

How do I check if directory exists in Python?

Use os.path.isdir for directories only:

>>> import os >>> os.path.isdir('new_folder') True 

Use os.path.exists for both files and directories:

>>> import os >>> os.path.exists(os.path.join(os.getcwd(), 'new_folder', 'file.txt')) False 

Alternatively, you can use pathlib :

 >>> from pathlib import Path >>> Path('new_folder').is_dir() True >>> (Path.cwd() / 'new_folder' / 'file.txt').exists() False 

Python 3.4 introduced the pathlib module into the standard library, which provides an object oriented approach to handle filesystem paths. The is_dir() and exists() methods of a Path object can be used to answer the question:

In [1]: from pathlib import Path In [2]: p = Path('/usr') In [3]: p.exists() Out[3]: True In [4]: p.is_dir() Out[4]: True 

Paths (and strings) can be joined together with the / operator:

In [5]: q = p / 'bin' / 'vim' In [6]: q Out[6]: PosixPath('/usr/bin/vim') In [7]: q.exists() Out[7]: True In [8]: q.is_dir() Out[8]: False 

Pathlib is also available on Python 2.7 via the pathlib2 module on PyPi.

So close! os.path.isdir returns True if you pass in the name of a directory that currently exists. If it doesn’t exist or it’s not a directory, then it returns False .

Python — How to check whether a directory is a sub, import os.path def in_directory (file, directory): #make both absolute directory = os.path.join (os.path.realpath (directory), ») file = os.path.realpath (file) #return true, if the common prefix of both is equal to directory #e.g. /a/b/c/d.rst and directory is /a/b, the common prefix is /a/b return os.path.commonprefix ( [file, …

Check to see if a directory is valid in Python

I’m not sure there is a built-in function that does what you want, so you might need to do it yourself.

Your best bet is to create a «whitelist» of characters that you know will be valid. For example: alphanumerics, underscores, etc. Then, if the filename given by the user has any characters NOT in this list, throw up an error. It doesn’t matter if this whitelist leaves out a few characters that should work; getting it right 95% (as long as the 5% are false negatives) should be fine.

Keep in mind there might be some issues besides just characters that are invalid. See this question for various considerations when writing such a function.

Finally, one solution is to name the file yourself, rather than allow the user to do it. Depending on your situation, you might be able to store the file with one filename, but in the application, you see it referred to by a different name. Of course, if the user will be accessing these files directly outside of your program, this could be confusing.

Your question is still a little vague. If you are talking about building/specifying directory paths when you are working with different OSes, you might want to take a look at the os and os.path modules, and in particular os.sep.

Also, when creating paths, rather than using string functions, it’s better to use os.path.join()

Then there are these (perhaps this is what you mean by «valid» files and directories)?

os.path.isdir(path)

Return True if path is an existing directory. This follows symbolic links, so both islink() and isdir() can be true for the same path.

os.path.isfile(path)

Return True if path is an existing regular file. This follows symbolic links, so both islink() and isfile() can be true for the same path.

There are other many os.path functions, like os.path.islink() etc, and if this is along the lines of what you are asking about, you might find your answer there.

if you use os.path.join to create the directory string you will correctly writes the path depending on the environment you are in. then you can use os.path.isdir, as suggested above. to verify if the string points to an existing directory

How to check if ANY file exists in a certain folder with, will list the files in the folder folder script is running from main folder files main.py will list only files, not . and .. import os dir = os.path.dirname (__file__) or ‘.’ dir_path = os.path.join (dir, ‘../folder/’) onlyfiles = [f for f in os.listdir (dir_path) if os.path.isfile (os.path.join (dir_path, f))] Share Improve this answer

Using os.listdir(), see if an object is a file or a directory

You need to pass the complete path to isfile() and isdir() .

import os path = "C:" for item in os.listdir(path): item = os.path.join(path, item) if os.path.isfile(item): print(item + " is a file") elif os.path.isdir(item): print(item + " is a dir") else: print("Unknown!") 

Check to see if a directory is valid in Python, Return True if path is an existing directory. This follows symbolic links, so both islink () and isdir () can be true for the same path. os.path.isfile (path) Return True if path is an existing regular file. This follows symbolic links, so both islink () and isfile () can be true for the same path.

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