Python: List only directories, files and all directories, files in a specified path
Python Operating System Services: Exercise-2 with Solution
Write a Python program to list only directories, files and all directories, files in a specified path.
Python Code :
import os path = 'g:\\testpath\\' print("Only directories:") print([ name for name in os.listdir(path) if os.path.isdir(os.path.join(path, name)) ]) print("\nOnly files:") print([ name for name in os.listdir(path) if not os.path.isdir(os.path.join(path, name)) ]) print("\nAll directories and files :") print([ name for name in os.listdir(path)])
Only directories: ['a', 'b', 'c', 'd', 'e', 'f'] Only files: ['p.txt', 'q.txt', 'r.docx', 's.xlsx'] All directories and files : ['a', 'b', 'c', 'd', 'e', 'f', 'p.txt', 'q.txt', 'r.docx', 's.xlsx']
Python Code Editor:
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Previous: Write a Python program to get the name of the operating system (Platform independent), information of current operating system, current working directory, print files and directories in the current directory and raises error in the case of invalid or inaccessible file names and paths.
Next: Write a Python program to scan a specified directory and identify the sub directories and files.
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Python: Tips of the Day
Python: Cache results with decorators
There is a great way to cache functions with decorators in Python. Caching will help save time and precious resources when there is an expensive function at hand.
Implementation is easy, just import lru_cache from functools library and decorate your function using @lru_cache.
from functools import lru_cache @lru_cache(maxsize=None) def fibo(a): if a <= 1: return a else: return fibo(a-1) + fibo(a-2) for i in range(20): print(fibo(i), end="|") print("\n\n", fibo.cache_info())
0|1|1|2|3|5|8|13|21|34|55|89|144|233|377|610|987|1597|2584|4181| CacheInfo(hits=36, misses=20, maxsize=None, currsize=20)
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