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How to list all files in a directory in Python

How to list all files in a directory in Python.

Here is a detailed step-by-step tutorial on how to list all files in a directory using Python.

Step 1: Import the necessary modules​

First, we need to import the required modules in order to work with the file system in Python. We'll use the os module for this purpose.

import os

Step 2: Specify the directory path​

Next, we need to provide the path to the directory for which we want to list all the files. You can either provide an absolute path or a relative path.

directory = '/path/to/directory'

Step 3: Use the os.listdir() function​

To list all the files in a directory, we'll use the os.listdir() function. This function returns a list of all the files and directories present in the specified directory.

file_list = os.listdir(directory)

Step 4: Filter out directories from the file list​

By default, the os.listdir() function returns both files and directories. If you only want to list files, you can filter out the directories from the file list using a loop.

file_list = [file for file in file_list if os.path.isfile(os.path.join(directory, file))]

Here, we use a list comprehension to iterate over each item in the file list. The os.path.isfile() function is used to check if an item is a file or not by joining the directory path with the item.

Step 5: Print the file list​

Finally, we can print the list of files using a loop.

for file in file_list:
    print(file)

This loop will iterate over each file in the file list and print its name.

Complete Example​

Here's the complete example code that you can run:

import os

directory = '/path/to/directory'

file_list = os.listdir(directory)
file_list = [file for file in file_list if os.path.isfile(os.path.join(directory, file))]

for file in file_list:
    print(file)

Make sure to replace /path/to/directory with the actual path of the directory you want to list the files for.

That's it! You now have a step-by-step tutorial on how to list all files in a directory using Python.