Skip to main content

A tiny compatibility module for cross-Python2/3 code.

Project description


A tiny compatibility module for cross-Python2/3 code. It's not a replacement for neither six nor __future__ modules but is more of an extension to them.

Defines the very basic stuff:

Python version booleans

PY2, PY3, PY310 - simple flags indicating whether you're running under Python 2, 3 or 3.10+.



Type alias:

  • Python 2 - unicode
  • Python 3 - str


Converts the given value to a string:

  • Python 2: tries to turn to a str, unicode if fails.
  • Python 3: just an alias for str().


Formats a string and doesn't throw an error if any of the given arguments is unicode under Python 2. The resulting string is simply turned to unicode, too.


@attrs decorator

Tries to use attr.s and if it's not found, falls back to built-in decorator from Py3.10 and, finally to 3.7 implementation if available.

If none of those is found, applies the included dataclass implementation, the simplest possible one (@dataclass_fallback, see below) - as the last resort, just to avoid exceptions.

@dataclass decorator

Similar to @attrs, but tries built-in @dataclass first.

I'd recommend using @attrs anyway, but here it is.

Tries to use the built-in decorator from Py3.10, falls back to 3.7 implementation, then to attr.s. And, finally, to the included @dataclass_fallback.

@dataclass_fallback decorator

The minimal implementation of dataclass working in any Python version above 2.7. Implements only init, repr and eq features.

It doesn't do any "attribute is Field instance" stuff or any other getattr/setattr magic.

This is what both @dataclass and @attrs fall back to as the last resort. I don't know why would you need it explicitly, though - but here it is.


python -m pip install -U darlog-py23


You can clone the git repo and add the contents of src/ directory to your python installation by running this command in the repo root:

python -m pip install -e .[dev]

The version is specified in the main file. To update the binary distribution (wheel), run:

python bdist_wheel sdist

Project details

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

darlog-py23-1.2.0.tar.gz (9.5 kB view hashes)

Uploaded source

Built Distribution

darlog_py23-1.2.0-py2.py3-none-any.whl (11.0 kB view hashes)

Uploaded py2 py3

Supported by

AWS AWS Cloud computing Datadog Datadog Monitoring Facebook / Instagram Facebook / Instagram PSF Sponsor Fastly Fastly CDN Google Google Object Storage and Download Analytics Huawei Huawei PSF Sponsor Microsoft Microsoft PSF Sponsor NVIDIA NVIDIA PSF Sponsor Pingdom Pingdom Monitoring Salesforce Salesforce PSF Sponsor Sentry Sentry Error logging StatusPage StatusPage Status page