pathvalidate
pathvalidate is a Python library to sanitize/validate a string such as filenames/file-paths/etc.
- Sanitize/Validate a string as a:
- file name
- file path
- Sanitize will do:
- Remove invalid characters for a target platform
- Replace reserved names for a target platform
- Normalize
- Remove unprintable characters
- Argument validator/sanitizer for
argparseandclick - Multi platform support:
LinuxWindowsmacOSPOSIX: POSIX-compliant systems (Linux, macOS, etc.)universal: platform independent
- Multibyte character support
You can find this package's command line interface tool at the pathvalidate-cli repository.
| Sample Code: | from pathvalidate import sanitize_filename
fname = "fi:l*e/p\"a?t>h|.t<xt"
print(f"{fname} -> {sanitize_filename(fname)}\n")
fname = "\0_a*b:c<d>e%f/(g)h+i_0.txt"
print(f"{fname} -> {sanitize_filename(fname)}\n") |
|---|---|
| Output: | fi:l*e/p"a?t>h|.t<xt -> filepath.txt
_a*b:c<d>e%f/(g)h+i_0.txt -> _abcde%f(g)h+i_0.txt
|
The default target platform is universal.
i.e. the sanitized file name is valid for any platform.
| Sample Code: | from pathvalidate import sanitize_filepath
fpath = "fi:l*e/p\"a?t>h|.t<xt"
print(f"{fpath} -> {sanitize_filepath(fpath)}\n")
fpath = "\0_a*b:c<d>e%f/(g)h+i_0.txt"
print(f"{fpath} -> {sanitize_filepath(fpath)}\n") |
|---|---|
| Output: | fi:l*e/p"a?t>h|.t<xt -> file/path.txt
_a*b:c<d>e%f/(g)h+i_0.txt -> _abcde%f/(g)h+i_0.txt
|
| Sample Code: | import sys
from pathvalidate import ValidationError, validate_filename
try:
validate_filename("fi:l*e/p\"a?t>h|.t<xt")
except ValidationError as e:
print(f"{e}\n", file=sys.stderr)
try:
validate_filename("COM1")
except ValidationError as e:
print(f"{e}\n", file=sys.stderr) |
|---|---|
| Output: | [PV1100] invalid characters found: platform=universal, description=invalids=('/'), value='fi:l*e/p"a?t>h|.t<xt'
[PV1002] found a reserved name by a platform: 'COM1' is a reserved name, platform=universal, reusable_name=False
|
| Sample Code: | from pathvalidate import is_valid_filename, sanitize_filename
fname = "fi:l*e/p\"a?t>h|.t<xt"
print(f"is_valid_filename('{fname}') return {is_valid_filename(fname)}\n")
sanitized_fname = sanitize_filename(fname)
print(f"is_valid_filename('{sanitized_fname}') return {is_valid_filename(sanitized_fname)}\n") |
|---|---|
| Output: | is_valid_filename('fi:l*e/p"a?t>h|.t<xt') return False
is_valid_filename('filepath.txt') return True
|
| Sample Code: | from argparse import ArgumentParser
from pathvalidate.argparse import validate_filename_arg, validate_filepath_arg
parser = ArgumentParser()
parser.add_argument("--filename", type=validate_filename_arg)
parser.add_argument("--filepath", type=validate_filepath_arg)
options = parser.parse_args()
if options.filename:
print(f"filename: {options.filename}")
if options.filepath:
print(f"filepath: {options.filepath}") |
|---|---|
| Output: | $ ./examples/argparse_validate.py --filename eg
filename: eg
$ ./examples/argparse_validate.py --filename e?g
usage: argparse_validate.py [-h] [--filename FILENAME] [--filepath FILEPATH]
argparse_validate.py: error: argument --filename: [PV1100] invalid characters found: invalids=(':'), value='e:g', platform=Windows
|
Note
validate_filepath_arg consider platform as of "auto" if the input is an absolute file path.
| Sample Code: | from argparse import ArgumentParser
from pathvalidate.argparse import sanitize_filename_arg, sanitize_filepath_arg
parser = ArgumentParser()
parser.add_argument("--filename", type=sanitize_filename_arg)
parser.add_argument("--filepath", type=sanitize_filepath_arg)
options = parser.parse_args()
if options.filename:
print("filename: {}".format(options.filename))
if options.filepath:
print("filepath: {}".format(options.filepath)) |
|---|---|
| Output: | $ ./examples/argparse_sanitize.py --filename e/g
filename: eg
|
Note
sanitize_filepath_arg is set platform as "auto".
| Sample Code: | import click
from pathvalidate.click import validate_filename_arg, validate_filepath_arg
@click.command()
@click.option("--filename", callback=validate_filename_arg)
@click.option("--filepath", callback=validate_filepath_arg)
def cli(filename: str, filepath: str) -> None:
if filename:
click.echo(f"filename: {filename}")
if filepath:
click.echo(f"filepath: {filepath}")
if __name__ == "__main__":
cli() |
|---|---|
| Output: | $ ./examples/click_validate.py --filename ab
filename: ab
$ ./examples/click_validate.py --filepath e?g
Usage: click_validate.py [OPTIONS]
Try 'click_validate.py --help' for help.
Error: Invalid value for '--filename': [PV1100] invalid characters found: invalids=('?'), value='e?g', platform=Windows
|
| Sample Code: | import click
from pathvalidate.click import sanitize_filename_arg, sanitize_filepath_arg
@click.command()
@click.option("--filename", callback=sanitize_filename_arg)
@click.option("--filepath", callback=sanitize_filepath_arg)
def cli(filename, filepath):
if filename:
click.echo(f"filename: {filename}")
if filepath:
click.echo(f"filepath: {filepath}")
if __name__ == "__main__":
cli() |
|---|---|
| Output: | $ ./examples/click_sanitize.py --filename a/b
filename: ab
|
More examples can be found at https://pathvalidate.rtfd.io/en/latest/pages/examples/index.html
pip install pathvalidate
conda install conda-forge::pathvalidate
sudo add-apt-repository ppa:thombashi/ppa sudo apt update sudo apt install python3-pathvalidate
Python 3.7+ no external dependencies.
