Changelog

Version 1.3.0

Released on: 2020/11/27

Bug fixes:

• Properly handle capitalized hashes. On Windows, users might sometimes get capitalized hashes from the system. To avoid false hash mismatches, convert stored and computed hashes to lowercase before doing comparisons. Convert hashes to lowercase when reading from the registry to make sure stored hashes are always lowercase. (#214)

New features:

• Add option to retry downloads if they fail. The new retry_if_failed option to pooch.create and pooch.Pooch allows retrying the download the specified number of times in case of failures due to hash mismatches (coming from Pooch) or network issues (coming from requests). This is useful for running downloads on CI that tend to fail sporadically. Waits a period of time between consecutive downloads starting with 1s and increasing up to 10s in 1s increments. (#215)

• Allow user defined decompressed file names. Introduce new name argument to pooch.Decompress to allow user defined file names. Defaults to the previous naming convention for backward compatibility. (#203)

Documentation:

• Add seaborn-image to list of packages using Pooch (#218)

Maintenance:

• Add support for Python 3.9. (#220)

• Drop support for Python 3.5. (#204)

• Use pip instead of conda to speed up Actions (#216)

• Add license and copyright notice to every .py file (#213)

This release contains contributions from:

• Leonardo Uieda

• Danilo Horta

• Hugo van Kemenade

• SarthakJariwala

Version 1.2.0

Released on: 2020/09/10

Warning

Pooch v1.2.0 is the last release that is compatible with Python 3.5.

Bug fixes:

• Fix FTP availability check when the file is in a directory. If the data file is not in the base directory, the Pooch.is_available test was broken since we were checking for the full path in ftp.nlst instead of just the file name. (#191)

New features:

• Add the SFTPDownloader class for secure FTP downloads (#165)

• Expose Pooch version as pooch.__version__ (#179)

• Allow line comments in registry files with # (#180)

Enhancements:

• Point to Unzip/tar from Decompress docs and errors (#200)

Documentation:

• Re-factor the documentation into separate pages (#202)

• Add warning to the docs about dropping Python 3.5 (#201)

• Add histolab to the Pooch-powered projects (#189)

Maintenance:

• Push documentation to GitHub Pages using Actions (#198)

• Add GitHub Actions workflow for publishing to PyPI (#196)

• Set up GitHub Actions for testing and linting (#194)

• Test FTP downloads using a local test server (#192)

This release contains contributions from:

• Leonardo Uieda

• Hugo van Kemenade

• Alessia Marcolini

• Luke Gregor

• Mathias Hauser

Version 1.1.1

Released on: 2020/05/14

Bug fixes:

• Delay data cache folder creation until the first download is attempted. As seen in recent issues in scikit-image, creating the data folder in pooch.create can cause problems since this function is called at import time. This means that importing the package in parallel can cause race conditions and crashes. To prevent that from happening, delay the creation of the cache folder until Pooch.fetch or retrieve are called. (#173)

• Allow the data folder to already exist when creating it. This is can help cope with parallel execution as well. (#171)

Documentation:

• Added scikit-image to list of Pooch users. (#168)

• Fix typo in README and front page contributing section. (#166)

This release contains contributions from:

• Leonardo Uieda

• Egor Panfilov

• Rowan Cockett

Version 1.1.0

Released on: 2020/04/13

New features:

• New function pooch.retrieve to fetch single files This is much more convenient than setting up a Pooch while retaining the hash checks and use of downloaders and processors. It automatically selects a unique file name and saves files to a cache folder. (#152)

• Allow to use of different hashing algorithms (other than SHA256). Optionally specify the hash as alg:hash and allow pooch.Pooch to recognize the algorithm when comparing hashes. Setting an algorithsm is optional and omiting it defaults to SHA256. This is particularly useful when data are coming from external sources and published hashes are already available. (#133)

Documentation:

• Add example for fetching datasets that change on the server, for which the hash check would always fail. (#144)

• Fix path examples in docstring of pooch.os_cache. The docstring mentioned the data path as examples instead of the cache path. (#140)

• Add example of creating a registry when you don’t have the data files locally and would have to download them manually. The example uses the pooch.retrieve function to automate the process. The example covers two cases: when all remote files share the same base URL and when every file has its own URL. (#161)

Maintenance:

• A lot of general refactoring of the internals of Pooch to facilitate development of the new pooch.retrieve function (#159 #157 #156 #151 #149)

This release contains contributions from:

• Leonardo Uieda

• Santiago Soler

• Kacper Kowalik

• Lucas Martin-King

• Zac Flamig

Version 1.0.0

Released on: 2020/01/28

This release marks the stabilization of the Pooch API. Further changes to the 1.* line will be fully backwards compatible (meaning that updating Pooch should not break existing code). If there is great need to make backwards incompatible changes, we will release a 2.* line. In that case, bug fixes will still be ported to the 1.* line for a period of time.

Improvements:

• Allow blank lines in registry files. Previously, they would cause an error. (#138)

Backwards incompatible changes:

• Using Python’s logging module to instead of warnings to inform users of download, update, and decompression/unpacking actions. This allows messages to be logged with different priorities and the user filter out log messages or silence Pooch entirely. Introduces the function pooch.get_logger to access the logging object used by Pooch. Users who relied on Pooch issuing warnings will need to update to capturing logs instead. All other parts of the API remain unchanged. (#115)

This release contains contributions from:

• Daniel Shapero

Version 0.7.2

Released on: 2020/01/17

🚨 Announcement: 🚨 We now have a JOSS paper about Pooch! Please cite it when you use Pooch for your research. (#116 with reviews in #132 and #134)

This is minor release which only updates the citation information to the new JOSS paper. No DOI was issued for this release since there are no code or documentation changes.

Version 0.7.1

Released on: 2020/01/17

Improvements:

• Better error messages when hashes don’t match. Include the file name in the exception for a hash mismatch between a downloaded file and the registry. Before, we included the name of temporary file, which wasn’t very informative. (#128)

• Better error message for malformed registry files. When loading a registry file, inform the name of the file and include the offending content in the error message instead of just the line number. (#129)

Maintenance:

• Change development status flag in setup.py to “stable” instead of “alpha”. (#127)

This release was reviewed at the Journal of Open Source Software. The code and software paper contain contributions from:

• Anderson Banihirwe

• Martin Durant

• Mark Harfouche

• Hugo van Kemenade

• John Leeman

• Rémi Rampin

• Daniel Shapero

• Santiago Rubén Soler

• Matthew Turk

• Leonardo Uieda

Version 0.7.0

Released on: 2019/11/19

New features:

• New pooch.FTPDownloader class for downloading files over FTP. Uses the standard library ftplib. The appropriate downloader is automatically selected by pooch.Pooch.fetch based on the URL (for anonymous FTP only), so no configuration is required. If authentication is required, pooch.FTPDownloader provides the need support. Ported from NCAR/aletheia-data by the author. (#118)

• Support for file-like objects to Pooch.load_registry (opened either in binary or text mode). (#117)

Maintenance:

• Testing and official support for Python 3.8. (#113)

• 🚨 Drop support for Python 2.7. 🚨 Remove conditional dependencies and CI jobs. (#100)

Documentation:

• In the tutorial, use pkg_resources.resource_stream() from setuptools to load the registry.txt file. It’s less error-prone than using os.path and __file__ and allows the package to work from zip files. (#120)

• Docstrings formatted to 79 characters (instead of 88) for better rendering in Jupyter notebooks and IPython. These displays are limited to 80 chars so the longer lines made the docstring unreadable. (#123)

This release contains contributions from:

• Anderson Banihirwe

• Hugo van Kemenade

• Remi Rampin

• Leonardo Uieda

Version 0.6.0

Released on: 2019/10/22

🚨 Pooch v0.6.0 is the last release to support Python 2.7 🚨

New features:

• Add optional download progress bar to pooch.HTTPDownloader (#97)

Maintenance:

• Warn that 0.6.0 is the last version to support Python 2.7 (#108)

Documentation:

• Update contact information to point to our Slack channel (#107)

• Add icepack to list of projects using Pooch (#98)

This release contains contributions from:

• Daniel Shapero

• Leonardo Uieda

Version 0.5.2

Released on: 2019/06/24

Maintenance:

• Add back support for Python 3.5 with continuous integration tests. No code changes were needed, only removing the restriction from setup.py. (#93)

This release contains contributions from:

• Leonardo Uieda

Version 0.5.1

Released on: 2019/05/21

Documentation fixes:

• Fix formatting error in pooch.Decompress docstring. (#81)

• Fix wrong imports in the usage guide for post-processing hooks. (#84)

• Add section to the usage guide explaining when to use pooch.Decompress. (#85)

This release contains contributions from:

• Santiago Soler

• Leonardo Uieda

Version 0.5.0

Released on: 2019/05/20

New features:

• New processor pooch.Decompress saves a decompressed version of the downloaded file. Supports gzip, lzma/xz, and bzip2 compression. Note: Under Python 2.7, lzma and bzip2 require the backports.lzma and bz2file packages as well. These are soft dependencies and not required to use Pooch. See Installing. (#78)

• New processor pooch.Untar unpacks files contained in a downloaded tar archive (with or without compression). (#77)

This release contains contributions from:

• Matthew Turk

• Leonardo Uieda

Version 0.4.0

Released on: 2019/05/01

New features:

• Add customizable downloaders. Delegate file download into separate classes that can be passed to Pooch.fetch. Created the HTTPDownloader class (used by default) which can also be used to download files that require authentication/login. (#66)

• Add post-download processor hooks to Pooch.fetch. Allows users to pass in a function that is executed right before returning and can overwrite the file path that is returned by fetch. Use this, for example, to perform unpacking/decompression operations on larger files that can be time consuming and we only want to do once. (#59)

• Add the Unzip post-download processor to extract files from a downloaded zip archive. Unpacks files into a directory in the local store and returns a list of all unzipped files. (#72)

• Make the check_version function public. It’s used internally but will be useful in examples that want to download things from the pooch repository. (#69)

Maintenance:

• Pin sphinx to version 1.8.5. New versions of Sphinx (2.0.*) are messing up the numpydoc style docstrings. (#64)

This release contains contributions from:

• Santiago Soler

• Leonardo Uieda

Version 0.3.1

Released on: 2019/03/28

Minor patches:

• Add a project logo (#57)

• Replace http with https in the README.rst to avoid mixed content warnings in some browsers (#56)

Version 0.3.0

Released on: 2019/03/27

New features:

• Use the appdirs library to get the cache directory. Could change the default data location on all platforms. Locations are compatible with the XDG Base Directory Specification (#45)

• Add method Pooch.is_available to check remote file availability (#50)

• Add Pooch.registry_files property to get a name of all files in the registry (#42)

• Make Pooch.get_url a public method to get the download URL for a given file (#55)

Maintenance:

• Drop support for Python 3.5. Pooch now requires Python >= 3.6. (#52)

• Add a private method to check if a file is in the registry (#49)

• Fix typo in the Pooch.load_registry docstring (#41)

This release contains contributions from:

• Santiago Soler

• Rémi Rampin

• Leonardo Uieda

Version 0.2.1

Released on: 2018/11/15

Bug fixes:

• Fix unwanted ~ directory creation when not using a version in pooch.create (#37)

Version 0.2.0

Released on: 2018/10/31

Bug fixes:

• Avoid copying of files across the file system (#33)

• Correctly delete temporary downloads on error (#32)

New features:

• Allow custom download URLs for individual files (#30)

• Allow dataset versioning to be optional (#29)

Maintenance:

• Move URLs building to a dedicated method for easy subclassing (#31)

• Add testing and support for Python 3.7 (#25)

Version 0.1.1

Released on: 2018/08/30

Bug fixes:

• Check if the local data folder is writable and warn the user instead of crashing (#23)

Version 0.1

Released on: 2018/08/20

• Fist release of Pooch. Manages downloading sample data files over HTTP from a server and storing them in a local directory. Main features:

  • Download a file only if it’s not in the local storage.

  • Check the SHA256 hash to make sure the file is not corrupted or needs updating.

  • If the hash is different from the registry, Pooch will download a new version of the file.

  • If the hash still doesn’t match, Pooch will raise an exception warning of possible data corruption.