Convert a namedtuple into a dictionary

by

TL;DR: there’s a method _asdict provided for this.

Here is a demonstration of the usage:

>>> fields = ['name', 'population', 'coordinates', 'capital', 'state_bird']
>>> Town = collections.namedtuple('Town', fields)
>>> funkytown = Town('funky', 300, 'somewhere', 'lipps', 'chicken')
>>> funkytown._asdict()
OrderedDict([('name', 'funky'),
             ('population', 300),
             ('coordinates', 'somewhere'),
             ('capital', 'lipps'),
             ('state_bird', 'chicken')])

This is a documented method of namedtuples, i.e. unlike the usual convention in python the leading underscore on the method name isn’t there to discourage use. Along with the other methods added to namedtuples, _make, _replace, _source, _fields, it has the underscore only to try and prevent conflicts with possible field names.

Note: For some 2.7.5 < python version < 3.5.0 code out in the wild, you might see this version:

>>> vars(funkytown)
OrderedDict([('name', 'funky'),
             ('population', 300),
             ('coordinates', 'somewhere'),
             ('capital', 'lipps'),
             ('state_bird', 'chicken')])

For a while the documentation had mentioned that _asdict was obsolete (see here), and suggested to use the built-in method vars. That advice is now outdated; in order to fix a bug related to subclassing, the __dict__ property which was present on namedtuples has again been removed by this commit.

More Related Contents:

  1. What are “named tuples” in Python?
  2. Why can’t I use a list as a dict key in python?
  3. List of tuples to dictionary [duplicate]
  4. Converting a list of tuples into a dict
  5. python tuple to dict
  6. What does *tuple and **dict mean in Python? [duplicate]
  7. Why can’t I use a list as a dict key in python? Exactly what can and cannot be used, and why?
  8. Pythonic way to convert a dictionary into namedtuple or another hashable dict-like?
  9. Converting a csv file into a list of tuples with python
  10. In what case would I use a tuple as a dictionary key? [closed]
  11. How to map dict into another dict Python
  12. Determine the type of an object?
  13. multiprocessing: How do I share a dict among multiple processes?
  14. I’m getting Key error in python
  15. Merge and sum of two dictionaries
  16. Accessing elements of Python dictionary by index
  17. Intersecting two dictionaries
  18. How can I make a dictionary from separate lists of keys and values?
  19. Python dictionary keys. “In” complexity
  20. Python convert tuple to string
  21. Accessing a value in a tuple that is in a list
  22. Python 3 dictionary with known keys typing
  23. JSON serialize a dictionary with tuples as key
  24. Check if a given key already exists in a dictionary and increment it
  25. How can I use a dictionary to do multiple search-and-replace operations? [duplicate]
  26. JSON object must be str, bytes or bytearray, not dict
  27. How to convert a pymongo.cursor.Cursor into a dict?
  28. Are there any reasons not to use an OrderedDict?
  29. Changing one dict changes all dicts in a list of dicts [duplicate]
  30. How do I re-map python dict keys

Leave a Comment