os.listdir()
FilesystemReturns a list of filenames in the specified directory.
Signature
os.listdir(path='.')
Returns
listExample
import os
files = os.listdir('.')
for f in sorted(files):
print(f)About os.listdir()
os.listdir is a Python filesystem function with the signature os.listdir(path='.'). Returns a list of filenames in the specified directory. It returns a value of type list.
Python provides a rich set of built-in functions and standard library modules that cover common programming tasks. Understanding these functions helps you write more idiomatic, efficient Python code. The os.listdirfunction is commonly used in data processing, web development, scripting, and automation tasks.
When working with os.listdir(), consider edge cases like empty inputs, None values, and type mismatches. Python's duck typing means many built-in functions work with any object that implements the required protocol (e.g., __len__ for len(), __iter__ for iteration). This flexibility is a key strength of Python's design philosophy.