You could just .split it:
>>> Path('logs/date.log.txt').stem.split('.')[0]
'date'
os.path works just as well:
>>> os.path.basename('logs/date.log.txt').split('.')[0]
'date'
It passes all of the tests:
In [11]: all(Path(k).stem.split('.')[0] == v for k, v in {
....: 'a': 'a',
....: 'a.txt': 'a',
....: 'archive.tar.gz': 'archive',
....: 'directory/file': 'file',
....: 'd.x.y.z/f.a.b.c': 'f',
....: 'logs/date.log.txt': 'date'
....: }.items())
Out[11]: True
Python.org
discuss.python.org › ideas
Add pathlib.Path.stems - Ideas - Discussions on Python.org
April 20, 2023 - Path.suffix is to Path.stem as Path.suffixes is to …? >>> from pathlib import Path >>> p = Path("CurveFile.vs2022.vcxproj") >>> p.suffix '.vcxproj' >>> p.stem 'CurveFile.vs2022' >>> p.suffixes ['.vs2022', '.vcxproj'] While you can programmatically get each and every suffix, currently, there is no way to extract first part ('CurveFile') without doing string manipulation.
Python
docs.python.org › 3 › library › pathlib.html
pathlib — Object-oriented filesystem paths
February 23, 2026 - This is commonly called the file extension. Changed in version 3.14: A single dot (”.”) is considered a valid suffix. ... >>> PurePosixPath('my/library.tar.gar').suffixes ['.tar', '.gar'] >>> PurePosixPath('my/library.tar.gz').suffixes ['.tar', '.gz'] >>> PurePosixPath('my/library').suffixes [] Changed in version 3.14: A single dot (”.”) is considered a valid suffix. ... >>> PurePosixPath('my/library.tar.gz').stem 'library.tar' >>> PurePosixPath('my/library.tar').stem 'library' >>> PurePosixPath('my/library').stem 'library'
python - Clean way to get the "true" stem of a Path object? - Stack Overflow
As pointed out in the comments ... have an extension with more than 2 suffixes. Although this doesn't sound very likely (and pathlib itself doesn't have a native way to deal with it), if you wanted to use pathlib uniquely, you could use: >>> Path('logs/date.log.txt.foo').with_suffix('').with_suffix('').stem ... More on stackoverflow.com
string - How do I get the filename without the extension from a path in Python? - Stack Overflow
How do I get the filename without the extension from a path in Python? "/path/to/some/file.txt" → "file" More on stackoverflow.com
python - Adding another suffix to a path that already has a suffix with pathlib - Stack Overflow
I was converting some old Python code to use pathlib instead of os.path for most path-related operations, but I ended up with the following problem: I needed to add another extension to a path that More on stackoverflow.com
pathlib .suffix, .suffixes, .stem unexpected behavior for pathname with trailing dot
BPO 38624 Nosy @pitrou Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state. Show more details GitHub fields: assignee = None closed... More on github.com
7
October 28, 2019Videos
GitHub
github.com › python › cpython › issues › 114610
`pathlib.PurePath.with_stem('')` promotes file extension to stem · Issue #114610 · python/cpython
January 26, 2024 - Bug report >>> pathlib.PurePath('foo.jpg').with_stem('').stem '.jpg' The with_stem() call should raise ValueError, as it's impossible for a filename to have an empty stem and a non-empty suffix. Linked PRs gh-114612 gh-114613
Author barneygale
Real Python
realpython.com › python-pathlib
Python's pathlib Module: Taming the File System – Real Python
January 11, 2025 - ... When you want to rename files, you can use .with_stem(), .with_suffix(), or .with_name(). They return the original path but with the filename, the file extension, or both replaced.
Top answer 1 of 7
40
You could just .split it:
>>> Path('logs/date.log.txt').stem.split('.')[0]
'date'
os.path works just as well:
>>> os.path.basename('logs/date.log.txt').split('.')[0]
'date'
It passes all of the tests:
In [11]: all(Path(k).stem.split('.')[0] == v for k, v in {
....: 'a': 'a',
....: 'a.txt': 'a',
....: 'archive.tar.gz': 'archive',
....: 'directory/file': 'file',
....: 'd.x.y.z/f.a.b.c': 'f',
....: 'logs/date.log.txt': 'date'
....: }.items())
Out[11]: True
2 of 7
9
Why not go recursively?
from pathlib import Path
def true_stem(path):
stem = Path(path).stem
return stem if stem == path else true_stem(stem)
assert(true_stem('d.x.y.z/f.a.b.c') == 'f')
freeCodeCamp
freecodecamp.org › news › how-to-use-pathlib-module-in-python
Python Path – How to Use the Pathlib Module with Examples
May 10, 2022 - This is similar to the .with_name() method. The .with_stem() changes the name of the last component temporarily. Also, if the given path doesn't contain a name, an error will occur.
Runebook.dev
runebook.dev › en › docs › python › library › pathlib › pathlib.PurePath.stem
python - Beyond the Extension: A Guide to pathlib.stem
from pathlib import Path def process_file_path(p: Path): """Processes a path using only pathlib properties.""" base_name = p.stem full_extension = "".join(p.suffixes) # Combines all suffixes (e.g., .tar.gz) print(f"Base: {base_name}") print(f"Extension: {full_extension}") process_file_path(Path('data/archive.tar.gz')) # Output: # Base: archive.tar # Extension: .tar.gz ... The traceback module in Python provides tools to extract, format, and print stack traces.
Top answer 1 of 16
1940
Python 3.4+
Use pathlib.Path.stem
Copy>>> from pathlib import Path
>>> Path("/path/to/file.txt").stem
'file'
>>> Path("/path/to/file.tar.gz").stem
'file.tar'
Python < 3.4
Use os.path.splitext in combination with os.path.basename:
Copy>>> os.path.splitext(os.path.basename("/path/to/file.txt"))[0]
'file'
>>> os.path.splitext(os.path.basename("/path/to/file.tar.gz"))[0]
'file.tar'
2 of 16
1346
Use .stem from pathlib in Python 3.4+
Copyfrom pathlib import Path
Path('/root/dir/sub/file.ext').stem
will return
Copy'file'
Note that if your file has multiple extensions .stem will only remove the last extension. For example, Path('file.tar.gz').stem will return 'file.tar'.
TradingCode
tradingcode.net › python › filename-without-last-extension
Get filename with extension removed: here's how in Python
Then we get the path’s filename with no last extension. For that we call the stem property on the path object in the file_path variable. We assign the returned filename to the file_no_ext variable.
PyTutorial
pytutorial.com › python-pathlibstem-explained-file-path-manipulation
PyTutorial | Python Pathlib.stem Explained | File Path Manipulation
March 23, 2025 - For example, you can use with_suffix() to change the file extension after extracting the stem. ... from pathlib import Path # Create a Path object file_path = Path("/documents/report.txt") # Change the suffix new_path = file_path.with_suffix(".pdf") ...
Top answer 1 of 8
127
I find the following slightly more satisfying than the answers that have already been given:
new_path = path.parent / (path.name + '.suffix')
EDIT: as @mitch-mcmabers pointed out, an even more satisfying answer would be
new_path = path.with_name(f"{path.name}.suffix")
2 of 8
39
It doesn't seem like Path's like being modified in-place (you can't change .parts[-1] directory or change .suffixes, etc.), but that doesn't mean you need to resort to anything too unsavory. The following works just fine, even if it's not quite as elegant as I'd like:
new_path = path.with_suffix(path.suffix + new_suffix)
where path is your original Path variable, and new_suffix is the string with your new suffix/extension (including the leading ".")
IONOS
ionos.com › digital guide › websites › web development › python pathlib
How does Python pathlib work and what are its benefits?
June 18, 2025 - This creates a new file name without changing the file extension. This is an example of the appropriate code: from pathlib import Path source = Path("ExampleList.md") destination = source.with_stem("new_example") destination.write_bytes(source.read_bytes())python
DataCamp
datacamp.com › tutorial › comprehensive-tutorial-on-using-pathlib-in-python-for-file-system-manipulation
How to Use Python's Pathlib (with Examples) | DataCamp
May 22, 2024 - The with_stem() method returns a file path with a different filename (although the suffix stays the same).
OneUptime
oneuptime.com › home › blog › how to use pathlib for file paths in python
How to Use pathlib for File Paths in Python
January 27, 2026 - # path_components.py # Accessing different parts of a path from pathlib import Path path = Path("/home/user/project/data/report.csv.gz") # Name - final component print(f"Name: {path.name}") # report.csv.gz # Stem - name without final suffix print(f"Stem: {path.stem}") # report.csv # Suffix - final extension print(f"Suffix: {path.suffix}") # .gz # Suffixes - all extensions print(f"Suffixes: {path.suffixes}") # ['.csv', '.gz'] # Parent - immediate parent directory print(f"Parent: {path.parent}") # /home/user/project/data # Parents - all ancestor directories for parent in path.parents: print(f" {
Inspired Python
inspiredpython.com › article › common-path-patterns
Common Path Patterns • Inspired Python
>>> Path('.bashrc').stem '.bashrc' If you just want the filename portion of the path, but with the extension, use name: >>> Path('/opt/hello.txt').name 'hello.txt' You can split a path into all its component parts with the parts property · >>> Path('/var/log/dmesg').parts ('/', 'var', 'log', 'dmesg') This is particularly useful if you want to check that parts of a Path exist within a certain hierarchy of directories.
Medium
dzdata.medium.com › pathlib-a-better-way-to-work-with-paths-in-python-4f24dea14fab
pathlib — a Better Way to Work with Paths in Python | by DZ | Medium
July 19, 2023 - To rename a file, we need to create a new path with the new name. We can use the with_stem method to replace the name of the file (without the extension) and then rename the file
GitHub
github.com › python › cpython › issues › 82805
pathlib .suffix, .suffixes, .stem unexpected behavior for pathname with trailing dot · Issue #82805 · python/cpython
October 28, 2019 - activity = <Date 2019-10-29.01:59:29.319> actor = 'xtreak' assignee = 'none' closed = False closed_date = None closer = None components = ['Library (Lib)'] creation = <Date 2019-10-28.22:54:26.232> creator = 'inyeollee' dependencies = [] files = [] hgrepos = [] issue_num = 38624 keywords = [] message_count = 1.0 messages = ['355600'] nosy_count = 2.0 nosy_names = ['pitrou', 'inyeollee'] pr_nums = [] priority = 'normal' resolution = None stage = None status = 'open' superseder = None type = 'behavior' url = 'https://bugs.python.org/issue38624' versions = ['Python 3.8'] GH-82805: Fix handling of single-dot file extensions in pathlib #118952
Author inyeollee
Mathspp
mathspp.com › blog › module-pathlib-overview
mathspp – take your Python 🐍 to the next level 🚀
with_stem: change the stem of a path (the name, minus the extension) (Python 3.9+); and · with_suffix: change the suffix (extension) of a path. To copy or move a file/directory, you can use the methods · copy & copy_into · move & move_into ...
Python.org
discuss.python.org › python help
Correct way to remove all file extensions from a path with pathlib? - Python Help - Discussions on Python.org
January 18, 2021 - If my file has multiple extensions, such as library.tar.gz, then .stem only removes the last one. How do I remove all of them? Is this how I’m expected to do it: from pathlib import Path filename = Path('file.tar.gz') …
Index.dev
index.dev › blog › get-file-extension-python
3 Best Ways to Get a File Extension in Python (With Examples)
The os module provides the os.path.splitext() function, which splits a file path into the base name and its extension. This method is tried and tested, making it an ideal choice for many traditional Python projects.