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Questions tagged [namedtuple]

namedtuple is a data structure provided by the Python collections module. It enables the creation of tuples with named elements (e.g., a Student tuple with the values (name, school, age) rather than a tuple with just two strings and an integer).

namedtuple is a data structure provided by the Python collections module. It enables the creation of tuples with named elements (e.g., a Student tuple with the values (name, school, age) rather than a tuple with just two strings and an integer).

Documentation: collections module in Python 3.

Recently, a declarative API for namedtuples is also provided by the typing module.

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Python dill: Pickle namedtuple doesnt seem to work

I have namedtuple inside a class. When pickling using dill, it complains the classic issue of not being able to find the namedtuple object at top module. import dill as pickle class NNRTMParse(object): def __init__(self,logfile)): …
rrkarts
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Python3 -- ValueError in Windows but not in Linux

I had a python 3 script working great when running on Raspbian. I moved it to my Windows machine and downloaded all the necessary packages but I get a ValueError now: ValueError: ctypes objects containing pointers cannot be pickled The traceback…
linus72982
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"'module' has no attribute" when working with namedtuples

I've run into a bit of a wall here, so I'm going to do my best to explain the issue. def playGames(jobQueue, ...): .... nextJob = jobQueue.get() ... def runPool(fens, timesetting, ...): ... for fen in fens: …
AndrewGrant
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Sorting a list of named tuples by field numercially

I'm fairly new to using python. I have a list of namedtuples which I would like to sort numerically by one of the fields. I currently have code that looks something like this: from collections import namedtuple testTuple = namedtuple("test", "name,…
Shani de Leeuw
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In Python, can I define a named tuple using typename?

I wonder why the third line in Snippet B would trigger an error. My understanding is in the second line in Snippet B (and A), I created a class variable (not a class instance) cls_obj whose type/class name is Duck. It's like class Duck(...): …
Nicholas
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complexity of set of nameduple lookup

Hi in Python i have a namedtuple because i want to store a few values in the same object. A = namedtuple("A", "key1 key2 key3") I store those A's in a registry class which holds a set() class ARegistry(object): def __init__(self): …
Robin van Leeuwen
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How to get a sorted list of namedtuples' attributes

I am totally lost as to why I keep getting errors. I am trying to print the titles of the books listed in alphabetical order using sorted(). I keep getting this error: sorted(BSI, key=list(Book)) TypeError: 'type' object is not iterable Then this…
Jesus Arteaga
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Python namedtuple in a boolean context

When a Python tuple is used in a boolean context, it is considered True if and only if it is not empty. Does the same apply to instances of collections.namedtuple?
user200783
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retrieving namedtuple value from string

I have created a namedtuple like this. Named_Tuple_1 = namedtuple("Coordinates", ["x", "y", "z"], verbose=False, rename=False) Point_1 = Named_Tuple_1(x=1, y=1, z=1) Point_2 = Named_Tuple_1(x=2, y=2, z=2) Point_3 = Named_Tuple_1(x=3, y=3, z=3) I…
GrandJoss
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Need help sorting a namedtuple and then printing the name of each namedtuple in Python

hello I am having some difficulty getting a function to work. I was given a list (RL) of restaurants in namedtuples and was asked to create a function that sorts the list by alphabetically order and then returns only the name of each…
A.G
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Creating namedtuple instance from already set values

I have a namedtuple like this course_summary_struct = namedtuple( 'CourseSummary', ['id', 'display_name', 'location', 'display_coursenum', 'display_organization'] ) I want to update the the namedtuple dynamically…
A.J.
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Python get values in dictionary inside another dictionary

I have the following data get by JSON: EVENT = { 'eventid': '11828346', 'acknowledges': [{'alias': 'user1', 'name': 'userXYZ'}], 'objectid': '25946', 'clock': '1444051689', 'object': '0', …
Joao Vitorino
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namedtuple pickling fails when variable name doesn't match typename

The python code below fails with the error pickle.PicklingError: Can't pickle : it's not found as __main__.SpecialName import pickle from collections import namedtuple different_SpecialName = namedtuple('SpecialName',…
eqzx
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Tuple with named elements

In python 2.7.10, sys.version_info from the sys module is: sys.version_info(major=2, minor=7, micro=10, releaselevel='final', serial=0) What python type is this? It appears to be some sort of a tuple with named elements, and you can refer to…
andro
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What's @classmethod do outside of a class in Python?

In the below code, if the @classmethod annotation is present, the inner def new() is allowed to stand in for the target's __new__() -- but the class is passed twice. If @classmethod is removed then we get an error like "". What is @classmethod doing…
solidsnack
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