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TL;DR
answer is: use the pathlib module

Pathlib is probably the most modern and convenient way for almost all of the file operations. For the existence of a file or a folder a single line of code is enough. If file is not exists, it will NOT throw any exception.

from pathlib import Path

if Path("myfile.txt").exists(): # works for both file and folders
    # do your cool stuff...

The pathlib module was introduced in Python 3.4, so you need to have Python 3.4+, this lib makes your life much easier while working with files and folders and it is pretty to use, here is more doc about it (https://docs.python.org/3/library/pathlib.html).

BTW, if you are going to reuse the path, then it is better to assign it to a variable

so will become

from pathlib import Path

p = Path("loc/of/myfile.txt")
if p.exists(): # works for both file and folders
    # do stuffs...
#reuse 'p' if needed.

TL;DR
The answer is: use the pathlib module

Pathlib is probably the most modern and convenient way for almost all of the file operations. For the existence of a file or a folder a single line of code is enough. If file is not exists, it will not throw any exception.

from pathlib import Path

if Path("myfile.txt").exists(): # works for both file and folders
    # do your cool stuff...

The pathlib module was introduced in Python 3.4, so you need to have Python 3.4+. This library makes your life much easier while working with files and folders, and it is pretty to use. Here is more documentation about it: pathlib — Object-oriented filesystem paths.

BTW, if you are going to reuse the path, then it is better to assign it to a variable.

So it will become:

from pathlib import Path

p = Path("loc/of/myfile.txt")
if p.exists(): # works for both file and folders
    # do stuffs...
#reuse 'p' if needed.

TL;DR
answer is: use the pathlib module

Pathlib is probably the most modern and convenient way for almost all of the file operations. For the existence of a file or a folder a single line of code is enough.

from pathlib import Path

if Path("myfile.txt").exists(): # works for both file and folders
    # do your cool stuff...

The pathlib module was introduced in Python 3.4, so you need to have Python 3.4+, this lib makes your life much easier while working with files and folders and it is pretty to use, here is more doc about it (https://docs.python.org/3/library/pathlib.html).

BTW, if you are going to reuse the path, then it is better to assign it to a variable

so will become

from pathlib import Path

p = Path("loc/of/myfile.txt")
if p.exists(): # works for both file and folders
    # do stuffs...
#reuse 'p' if needed.

TL;DR
answer is: use the pathlib module

Pathlib is probably the most modern and convenient way for almost all of the file operations. For the existence of a file or a folder a single line of code is enough. If file is not exists, it will NOT throw any exception.

from pathlib import Path

if Path("myfile.txt").exists(): # works for both file and folders
    # do your cool stuff...

The pathlib module was introduced in Python 3.4, so you need to have Python 3.4+, this lib makes your life much easier while working with files and folders and it is pretty to use, here is more doc about it (https://docs.python.org/3/library/pathlib.html).

BTW, if you are going to reuse the path, then it is better to assign it to a variable

so will become

from pathlib import Path

p = Path("loc/of/myfile.txt")
if p.exists(): # works for both file and folders
    # do stuffs...
#reuse 'p' if needed.

TL;DR
answer is: pathlib module --with a single line of code--

Pathlib is probably the most modern and convenient way for almost all of the file operations. For the existence of a file or a folder a single line of code is enough.

from pathlib import Path

if Path("myfile.txt").exists(): # works for both file and folders
    # do your cool stuff...

The pathlib module was introduced in Python 3.4, so you need to have Python 3.4+, this lib makes your life much easier while working with files and folders and it is pretty to use, here is more doc about it (https://docs.python.org/3/library/pathlib.html).

BTW, if you are going to reuse the path, then it is better to assign it to a variable

so will become

from pathlib import Path

p = Path("loc/of/myfile.txt")
if p.exists(): # works for both file and folders
    # do stuffs...
#reuse 'p' if needed.

TL;DR
answer is: use the pathlib module

Pathlib is probably the most modern and convenient way for almost all of the file operations. For the existence of a file or a folder a single line of code is enough.

from pathlib import Path

if Path("myfile.txt").exists(): # works for both file and folders
    # do your cool stuff...

The pathlib module was introduced in Python 3.4, so you need to have Python 3.4+, this lib makes your life much easier while working with files and folders and it is pretty to use, here is more doc about it (https://docs.python.org/3/library/pathlib.html).

BTW, if you are going to reuse the path, then it is better to assign it to a variable

so will become

from pathlib import Path

p = Path("loc/of/myfile.txt")
if p.exists(): # works for both file and folders
    # do stuffs...
#reuse 'p' if needed.