How To Get Filename Extensions In Python?

Python is a strong, adaptable, high-level, popular, and all-purpose programming language. It is easy to read, clear, and capable of carrying out any activity, making it a great first language. Its design philosophy, which heavily relies on indentation, prioritizes code readability. Web applications may be created on a server using Python because it supports a variety of programming paradigms, including functional, object-oriented, and structured programming.

Also see, Floor Division in Python

Python filename extensions

Python has a syntax akin to English in that it is straightforward to understand. Since Python is a general-purpose programming language, in contrast to the other languages available, it can be used for software development and other forms of programming outside web development. It helps with software development, data science, back-end development, arithmetic, and system programming. 

Cross-platform compatibility is a feature of Python, which implies that programs written in it may run on various operating systems, including Windows, Mac OS, Linux, Raspberry Pi, and others. Python works on an interpreter system, so code may be executed immediately after it is created, making it excellent for prototyping. A file having Python filename extensions are file having the python files in them with

Widely used Python filename extensions are:

• .py
• .pyo
• .pyw
• .pyi
• .pyc
• .pyz
• .pyd

Example: temp.py

Python scripts may be run by using the .py, .pyc, .pyo, and .pyd python filename extension; each of which has a specific purpose as given below:-

• .py: The Python source code is located in this file
• .pyc: Contains the compiled bytecode. 
• .pyo: .pyc file with optimizations on.
• .pyd: A windows Dynamic-link library file for Python. 

Also See, Python Round Function.

Methods to get filename extensions in Python

Using one of the two distinct methods shown below, we may get an answer to the question of “how to get filename extensions in Python?”:

Method 1: Using Python os module splitext()

The splittext() function separates the file path string into the file name and file extensions into a pair of roots and extensions so that we can put them both together to get the file path back. When the OS module is already in use, this function should be used. 

file name + extension = path 

import os
split_fl = os.path.splitext('temp.py')
#print the splitting of path where filename is 0 and extension is 1
print(split_fl)
file_ext = split_fl[1]
#print file extension
print(" ", file_ext)

Output:

('temp', '.py')
.py

Also read, python filename extensions

Method 2: Using Pathlib module

For an object-oriented strategy, this method is preferred in order to get file extensions. To extract the file path extension, use the pathlib.Path().suffix function of the Pathlib module.

import pathlib
file_ext = pathlib.Path('temp.py').suffix
#print file extension
print(" ", file_ext)

Output:

.py

You can compile it with online python compiler.