{"id":3187,"library":"od","title":"Shorthand syntax for building OrderedDicts","description":"od is a lightweight Python library (version 2.0.2) that provides a shorthand syntax for creating `collections.OrderedDict` instances. It aims to simplify the creation of ordered dictionaries with a concise and readable approach, leveraging Python's flexible syntax to make ordered dictionary construction more intuitive. The library is actively maintained.","status":"active","version":"2.0.2","language":"en","source_language":"en","source_url":"https://github.com/epsy/od","tags":["ordereddict","dictionary","syntax-sugar","collections","utility"],"install":[{"cmd":"pip install od","lang":"bash","label":"Install stable version"}],"dependencies":[],"imports":[{"symbol":"od","correct":"from od import od"}],"quickstart":{"code":"from od import od\n\n# Create an OrderedDict using shorthand syntax\nmy_ordered_dict = od({\n    'first_key': 1,\n    'second_key': 2,\n    'third_key': 3\n})\n\nprint(my_ordered_dict)\nprint(type(my_ordered_dict))\n\n# Verification of order\nassert list(my_ordered_dict.keys()) == ['first_key', 'second_key', 'third_key']","lang":"python","description":"The quickstart demonstrates importing the 'od' function and using it to construct a `collections.OrderedDict` with a clean, dictionary-like syntax. It then prints the resulting ordered dictionary and its type, confirming that the order is preserved."},"warnings":[{"fix":"Consider using a standard `dict` (e.g., `my_dict = {'a': 1, 'b': 2}`) unless the specific API or performance characteristics of `collections.OrderedDict` are required beyond simple insertion order preservation.","message":"For Python 3.7 and later, standard `dict` objects are guaranteed to preserve insertion order. This means that for many common use cases where `OrderedDict` was previously essential, a regular `dict` might now suffice and offer better performance or simpler code. Users should evaluate if they genuinely require `collections.OrderedDict`'s specific behaviors (like `move_to_end` or `popitem`'s LIFO/FIFO behavior) or if a standard `dict` meets their needs.","severity":"gotcha","affected_versions":"Python 3.7+"},{"fix":"After creating an ordered dictionary with `od`, interact with it as a standard `collections.OrderedDict` object to access its full range of methods.","message":"The `od` library provides a convenient shorthand for *constructing* `collections.OrderedDict` instances. It does not replace or extend the full `OrderedDict` API. If you need to use specific `OrderedDict` methods (e.g., `move_to_end()`, `popitem(last=False)`), you will still interact directly with the `collections.OrderedDict` object returned by `od`.","severity":"gotcha","affected_versions":"All versions of `od`"}],"env_vars":null,"last_verified":"2026-04-11T00:00:00.000Z","next_check":"2026-07-10T00:00:00.000Z"}