In Python, we can extract the file extension using either of the two different approaches discussed below –
Method 1: Using Python os module splitext() function
This function splits the file path string into file name and file extension into a pair of root and extension such that when both are added then we can retrieve the file path again (file_name + extension = path). This function is preferred to use when the OS module is being used already.
Example:
Python3
import os # this will return a tuple of root and extensionsplit_tup = os.path.splitext('my_file.txt')print(split_tup) # extract the file name and extensionfile_name = split_tup[0]file_extension = split_tup[1] print("File Name: ", file_name)print("File Extension: ", file_extension) |
Output:
('my_file', '.txt')
File Name: my_file
File Extension: .txtMethod 2: Using Pathlib module
pathlib.Path().suffix method of the Pathlib module can be used to extract the extension of the file path. This method is preferred for an object-oriented approach.
Example:
Python3
import pathlib # function to return the file extensionfile_extension = pathlib.Path('my_file.txt').suffixprint("File Extension: ", file_extension) |
Output:
File Extension: .txt
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