check file in directory python code example

Example 1: python check if file exists

import os

os.path.exists("file.txt") # Or folder, will return true or false

Example 2: python how to see if file is directory

"""
Use os.path.isfile(some_string) to check if some_string is a file
Use os.path.isdir(some_string) to check if some_string is a directory
"""
import os

path = "C:/some directory/"
file = path + "file.txt"

print("variable path is a file:", os.path.isfile(path) )
print("variable path is a directory:", os.path.isdir(path) )

print()

print("variable file is a file:", os.path.isfile(file) )
print("variable file is a directory:", os.path.isdir(file) )

Example 3: how to check if file exists pyuthon

import os
file_exists = os.path.exists("example.txt") # Returns boolean representing whether or not the file exists

Example 4: python find file in directory

# option A (i think this is faster, not in micropython)

import os

if os.path.isfile("test.dat"):
	print("yes") #file found
else:
	print("no") #file not found

# also this is posible
# from os.path import isfile
# if isfile("test.dat"):


# option B (posible in micropython)

import os

if "test.dat" in os.listdir():
	print("yes") # file found
else:
	print("no") # file not found

# os.lisdir() return a array whit all the files found in the directory