AttributeError: module 'collections' has no attribute 'Mapping'

[karapapas]

Python Python 3.10.9 Jupyter Notebook 6.5.2

!pip install experta Requirement already satisfied: experta in c:\programdata\anaconda3\lib\site-packages (1.9.4) Requirement already satisfied: frozendict==1.2 in c:\programdata\anaconda3\lib\site-packages (from experta) (1.2) Requirement already satisfied: schema==0.6.7 in c:\programdata\anaconda3\lib\site-packages (from experta) (0.6.7)

from experta import *

AttributeError Traceback (most recent call last) Cell In[9], line 1 ----> 1 from experta import *

File C:\ProgramData\anaconda3\lib\site-packages\experta__init__.py:5 3 try: 4 from .conditionalelement import AND, OR, NOT, TEST, EXISTS, FORALL ----> 5 from .engine import KnowledgeEngine 6 from .fact import Fact, InitialFact, Field 7 from .fieldconstraint import L, W, P

File C:\ProgramData\anaconda3\lib\site-packages\experta\engine.py:13 10 from experta import abstract 12 from experta.agenda import Agenda ---> 13 from experta.fact import InitialFact 14 from experta.factlist import FactList 15 from experta.rule import Rule

File C:\ProgramData\anaconda3\lib\site-packages\experta\fact.py:9 6 from schema import Schema 8 from experta.pattern import Bindable ----> 9 from experta.utils import freeze, unfreeze 10 from experta.conditionalelement import OperableCE 11 from experta.conditionalelement import ConditionalElement

File C:\ProgramData\anaconda3\lib\site-packages\experta\utils.py:4 1 from functools import singledispatch 2 import collections.abc ----> 4 from frozendict import frozendict 6 from .fieldconstraint import P 9 class frozenlist(tuple):

File C:\ProgramData\anaconda3\lib\site-packages\frozendict__init__.py:16 10 OrderedDict = NotImplemented 13 iteritems = getattr(dict, 'iteritems', dict.items) # py2-3 compatibility ---> 16 class frozendict(collections.Mapping): 17 """ 18 An immutable wrapper around dictionaries that implements the complete :py:class:collections.Mapping 19 interface. It can be used as a drop-in replacement for dictionaries where immutability is desired. 20 """ 22 dict_cls = dict

AttributeError: module 'collections' has no attribute 'Mapping'

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After deleting the site-packages !pip install experta Collecting experta Using cached experta-1.9.4-py3-none-any.whl (35 kB) Requirement already satisfied: frozendict==1.2 in c:\programdata\anaconda3\lib\site-packages (from experta) (1.2) Requirement already satisfied: schema==0.6.7 in c:\programdata\anaconda3\lib\site-packages (from experta) (0.6.7) Installing collected packages: experta Successfully installed experta-1.9.4

from experta import * ... AttributeError: module 'collections' has no attribute 'Mapping'

[horaciogacevedo]

This is a problem with python 3.10 upwards. If you create a conda environment with python 3.9 it works in ubuntu.

[mohamedamara1]

This is a problem with python 3.10 upwards. If you create a conda environment with python 3.9 it works in ubuntu.

Any other fix for this? I tested with 3.9.18 on python venv and I got the same error

[mohamedamara1]

Using

This is a problem with python 3.10 upwards. If you create a conda environment with python 3.9 it works in ubuntu.

Any other fix for this? I tested with 3.9.18 on python venv and I got the same error

Installing python 3.8.18 worked for me

[tomordonez]

Tested in Python 3.12.3. It looks like collections.Mapping was moved to collections.abc.Mapping. The file frozendict/__init__.py has to be changed to correct this. The class is defined like this:

class frozendict(collections.Mapping)

Change to

class frozendict(collections.abc.Mapping)