All Questions
Tagged with namedtuple pickle
17
questions
0
votes
1
answer
126
views
_pickle.PicklingError: Can't pickle <class '__main___.{CONST} '>: attribute lookupfaileddir_namesmain_on __main__ failed
firstly dir_names works well when pickling
dir_names = collections.namedtuple('dir_names', ['mark', 'category'])
pickle.dump(dir_names, open('tmp.bin', 'wb'))
I want make dir_name a const
DIR_NAMES = ...
0
votes
2
answers
234
views
Are pickle-able tuple-factories (with names) possible?
There are several questions about pickling namedtuples already, however none of the ones I found [1] [2] [3] [4] deals with the case of pickling a namedtuple that is bound on an object instance. ...
- 1,644
0
votes
1
answer
115
views
Pickle doesn't work for class inherited from "namedtuple" when overriding "__new__"
The following code fails
from collections import namedtuple
import pickle
class Foo(namedtuple("_Foo", ["a", "b"])):
def __new__(cls, **kwargs):
self = super().__new__(cls, **kwargs)
...
- 4,022
2
votes
1
answer
216
views
How to pickle namedtuple subclass with RSAPublicKey field
I'm trying to serialize objects that subclass namedtuple and hold references to RSAPublicKey objects.
I subclass a namedtuple to create immutable object instances.
One of the fields of my class holds ...
- 23
1
vote
1
answer
2k
views
Pickle can't pickle a namedtuple
I am trying to pickle the namedtuple like this:
def f():
TemplateData = namedtuple('TemplateData', ['field1', 'field2'])
f1 = np.random.randn(50,50)
f2 = np.random.randn(50,50)
td = ...
- 1,267
2
votes
2
answers
526
views
Space-efficient pickling of Cython objects in Python?
I'm trying to find a space-efficient way to store a struct-like object in Python.
# file point.py
import collections
Point = collections.namedtuple('Point', ['x', 'y'])
Here's the cythonized ...
- 958
5
votes
2
answers
3k
views
Adding extra fields to an existing namedtuple object and unpickling
I have some data in the pickled format with instances of below objects:
Point = namedtuple('Point', ['x',])
Now I want to extend the Point object to add another variable 'y' but also keep this ...
- 51
0
votes
1
answer
643
views
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(...
- 11
9
votes
1
answer
4k
views
Where should I define namedtuple classes in Python - which namespace?
Namedtuples are useful in Python to name small collections of data.
Take for example this namedtuple:
import collections
sesameEpisodeNTC = collections.namedtuple('sesameEpisodeNTC',
...
- 363
1
vote
1
answer
710
views
How can I use my 'namedtuple' structure with 'pickle'? [duplicate]
I have created tuple of dictionary using
from collections import namedtuple
import random
demand={}
Site_Product=namedtuple("Site_Product", ["site", "product"])
Products=['P1','P2','P3']
...
- 133
12
votes
1
answer
2k
views
Why can't I pickle a typing.NamedTuple while I can pickle a collections.namedtuple?
Why can't I pickle a typing.NamedTuple while I can pickle a collections.namedtuple? How can I manage to do pickle a NamedTuple?
This code shows what I have tried so far:
from collections import ...
- 2,053
0
votes
1
answer
328
views
namedtuple pickling fails when variable name doesn't match typename
The python code below fails with the error pickle.PicklingError: Can't pickle <class '__main__.SpecialName'>: it's not found as __main__.SpecialName
import pickle
from collections import ...
- 5,477
9
votes
3
answers
10k
views
Writing and reading namedtuple into a file in python
I need to write a data structure stored as namedtuple to file and read it back as a namedtuple in python.
Solutions here suggest using Json.load/loads or pickle which write the variable as json key-...
- 91
7
votes
2
answers
4k
views
Multiprocessing objects with namedtuple - Pickling Error
I am having trouble using namedtuples in objects that I want to put into multiprocessing. I am receiving pickling error. I tried couple of things from other stackoverflow posts, but I could not ...
- 189
6
votes
1
answer
2k
views
Understanding an issue with the namedtuple typename and pickle in Python
Earlier today I was having trouble trying to pickle a namedtuple instance. As a sanity check, I tried running some code that was posted in another answer. Here it is, simplified a little more:
from ...
- 32.3k