Easily pick a place to store data for your python package.
Project description
PyStow
👜 Easily pick a place to store data for your python code.
🚀 Getting Started
Get a directory for your application.
import pystow
# Get a directory (as a pathlib.Path) for ~/.data/pykeen
pykeen_directory = pystow.join('pykeen')
# Get a subdirectory (as a pathlib.Path) for ~/.data/pykeen/experiments
pykeen_experiments_directory = pystow.join('pykeen', 'experiments')
# You can go as deep as you want
pykeen_deep_directory = pystow.join('pykeen', 'experiments', 'a', 'b', 'c')
If you reuse the same directory structure a lot, you can save them in a module:
import pystow
pykeen_module = pystow.module("pykeen")
# Access the module's directory with .base
assert pystow.join("pykeen") == pystow.module("pykeen").base
# Get a subdirectory (as a pathlib.Path) for ~/.data/pykeen/experiments
pykeen_experiments_directory = pykeen_module.join('experiments')
# You can go as deep as you want past the original "pykeen" module
pykeen_deep_directory = pykeen_module.join('experiments', 'a', 'b', 'c')
Get a file path for your application by adding the name keyword argument. This is made explicit so PyStow knows which
parent directories to automatically create. This works with pystow or any module you create with pystow.module.
import pystow
# Get a directory (as a pathlib.Path) for ~/.data/indra/database.tsv
indra_database_path = pystow.join('indra', 'database', name='database.tsv')
Ensure a file from the internet is available in your application's directory:
import pystow
url = 'https://raw.githubusercontent.com/pykeen/pykeen/master/src/pykeen/datasets/nations/test.txt'
path = pystow.ensure('pykeen', 'datasets', 'nations', url=url)
Ensure a tabular data file from the internet and load it for usage (requires pip install pandas):
import pystow
import pandas as pd
url = 'https://raw.githubusercontent.com/pykeen/pykeen/master/src/pykeen/datasets/nations/test.txt'
df: pd.DataFrame = pystow.ensure_csv('pykeen', 'datasets', 'nations', url=url)
Ensure a RDF file from the internet and load it for usage (requires pip install rdflib)
import pystow
import rdflib
url = 'https://ftp.expasy.org/databases/rhea/rdf/rhea.rdf.gz'
rdf_graph: rdflib.Graph = pystow.ensure_rdf('rhea', url=url)
Also see pystow.ensure_excel(), pystow.ensure_rdf(), pystow.ensure_zip_df(), and pystow.ensure_tar_df().
⚙️️ Configuration
By default, data is stored in the $HOME/.data directory. By default, the <app> app will create the
$HOME/.data/<app> folder.
If you want to use an alternate folder name to .data inside the home directory, you can set the PYSTOW_NAME
environment variable. For example, if you set PYSTOW_NAME=mydata, then the following code for the pykeen app will
create the $HOME/mydata/pykeen/ directory:
import os
import pystow
# Only for demonstration purposes. You should set environment
# variables either with your .bashrc or in the command line REPL.
os.environ['PYSTOW_NAME'] = 'mydata'
# Get a directory (as a pathlib.Path) for ~/mydata/pykeen
pykeen_directory = pystow.join('pykeen')
If you want to specify a completely custom directory that isn't relative to your home directory, you can set
the PYSTOW_HOME environment variable. For example, if you set PYSTOW_HOME=/usr/local/, then the following code for
the pykeen app will create the /usr/local/pykeen/ directory:
import os
import pystow
# Only for demonstration purposes. You should set environment
# variables either with your .bashrc or in the command line REPL.
os.environ['PYSTOW_HOME'] = '/usr/local/'
# Get a directory (as a pathlib.Path) for /usr/local/pykeen
pykeen_directory = pystow.join('pykeen')
Note: if you set PYSTOW_HOME, then PYSTOW_NAME is disregarded.
XGD
While PyStow's main goal is to make application data less opaque and less hidden, some users might want to use the XGD spec for storing their app data.
If you set PYSTOW_USE_APPDIRS to true or True, then the
appdirs package will be used to choose
the base directory based on the user data dir option. This can still be
overridden by PYSTOW_HOME.
🚀 Installation
The most recent release can be installed from PyPI with:
$ pip install pystow
The most recent code and data can be installed directly from GitHub with:
$ pip install git+https://github.com/cthoyt/pystow.git
To install in development mode, use the following:
$ git clone git+https://github.com/cthoyt/pystow.git
$ cd pystow
$ pip install -e .
⚖️ License
The code in this package is licensed under the MIT License.
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