if exist 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 os if file exists

import os.path

if os.path.isfile('filename.txt'):
    print ("File exist")
else:
    print ("File not exist")

Example 3: file exist python

import os.path

if os.path.exists('filename.txt'):
    print ("File exist")
else:
    print ("File not exist")

Example 4: how to check if a variable exists in python

#if the variable is local: 
if 'myVar' in locals():
  # myVar exists

#if the variable is global:
if 'myVar' in globals():
  # myVar exists.

Example 5: python check if file exists

#using pathlib
from pathlib import Path

file_name = Path("file.txt")
if file_name.exists():
    print("exists") 
else:
    print("does not exist")

Example 6: check if a file exists

>>> import os
>>> os.path.isfile("d:\\Package1\\package1\\fibo.py")
True
>>> os.path.isfile("d:/Package1/package1/fibo.py")
True
>>> os.path.isfile("d:\\nonexisting.txt")