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lidatong / dataclasses-json

Easily serialize Data Classes to and from JSON
MIT License
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AttributeError: 'list' object has no attribute 'keys' #507

Open WolfgangFahl opened 5 months ago

WolfgangFahl commented 5 months ago

Description

I am generating Yaml files and rereading them using the from_dict feature of dataclasses_json

Code snippet that reproduces the issue

I am still debugging so i don't have a small example yet. The code and data that fails is below. The line that causes the problem is:

content = content_class.from_dict(data)

  def test_master_informatik(self):
        """
        Modulhandbuch Master Informatik 2023 RWTH Aachen
        """
        file_name = "MHBXMLRAW_Master_1_Fach_Informatik_2023.json"
        url = "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/"
        home_dir = os.path.expanduser("~")
        base_path = os.path.join(home_dir, ".dcm/rwth_aachen/")
        file_path = f"{base_path}/{file_name}"
        if os.path.isfile(file_path):
            # Load the JSON data
            with open(file_path, "r") as file:
                mh_data = json.load(file)
            self.assertTrue("MODULHANDBUCH" in mh_data)
            # Adjust the path to the array based on your actual JSON structure
            competence_elements = mh_data["MODULHANDBUCH"]["STRUKTUR"]["STP_KNOTEN"]

            # Create the competence tree
            competence_tree = self.create_competence_tree(competence_elements, url=url)
            # Pretty print the JSON with specified indentation
            #pretty_json = competence_tree.to_pretty_json()
            yaml_str = competence_tree.to_yaml()
            debug = self.debug
            debug=True
            if debug:
                print(yaml_str)
            with open("/tmp/rwth_aachen_master_informatik.yaml", "w") as yaml_file:
                yaml_file.write(yaml_str)
            dcm=DynamicCompetenceMap.from_definition_string(
                name="RWTH Aachen Master Informatik",
                definition_string=yaml_str,
                content_class=CompetenceTree,
                markup="yaml",
                debug=debug) 
            self.assertIsNotNone(dcm)

which calls

@classmethod
    def from_definition_string(
        cls, 
        name: str, 
        definition_string: str, 
        content_class, 
        markup: str = "json",
        debug:bool = False
    ) -> Any:
        """
        Load a DynamicCompetenceMap or Learner instance from a definition string (either JSON or YAML).

        Args:
            name (str): A name identifier for the data source.
            definition_string (str): The string content of the definition.
            content_class (dataclass_json): The class which will be instantiated with the parsed data.
            markup (str): The markup format of the data. Defaults to 'json'. Supported values are 'json' and 'yaml'.
            debug(bool): if True supply a JSON dump of the data in /tmp/{name}.json
        Returns:
            DynamicCompetenceMap: An instance of DynamicCompetenceMap loaded with the parsed data.

        Raises:
            ValueError: If there's an error in parsing the data.
        """
        try:
            data = cls.parse_markup(definition_string, markup)
            if debug:
                # Save the parsed data to a JSON file in /tmp directory
                debug_file_path = os.path.join('/tmp', f'{name}.json')
                with open(debug_file_path, 'w') as debug_file:
                    json.dump(data, debug_file, indent=2,default=str)
                content = content_class.from_dict(data)
            if isinstance(content, CompetenceTree):
                return DynamicCompetenceMap(content)
            else:
                return content
        except Exception as ex:
            cls.handle_markup_issue(name, definition_string, ex, markup)

the YAML input is

name: Computer Science
id: '1425409'
url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
aspects:
- name: Electives
  id: '1433959'
  url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
  areas:
  - name: Theoretical Computer Science
    id: '1433960'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Visual Computing & Interaction
    id: '1436731'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Hardware/Software Systems
    id: '1435044'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: AI & Data
    id: '1435552'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Software methods, tools
    id: '1440210'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
- name: Applied Courses
  id: '1430972'
  url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
  areas:
  - name: Biology
    id: '1430973'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Business Administration
    id: '1431214'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Electrical Engineering
    id: '1431629'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Mathematics
    id: '1431977'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Mechanical Engineering
    id: '1432295'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Physics
    id: '1432891'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Philosophy
    id: '1433063'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Chemistry
    id: '1433477'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Medicine
    id: '1433612'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Accredited Applied Course
    id: '1433897'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Psychology
    id: '1433926'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
- name: Labs, Seminars, Colloquiums
  id: '1438244'
  url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
  areas:
  - name: Seminar Computer Science
    id: '1438871'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Software Lab
    id: '1438806'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Depth Area Colloquium
    id: '1438690'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Seminar aus anderen Fakultäten/Fachgruppen
    id: '1534364'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
- name: Master Thesis
  id: '1433954'
  url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
  areas: []
- name: Requirements
  id: '1428650'
  url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
  areas:
  - name: Programming Concepts
    id: '1429415'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Compiler Construction
    id: '1429435'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Efficient Algorithms
    id: '1429442'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Satisfiability Checking
    id: '1429450'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Module Complexity Theory
    id: '1429477'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Mathematical Logic II
    id: '1429491'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Model Checking
    id: '1429498'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Modeling and analysis of hybrid systems
    id: '1429505'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Calculus for Computer Science
    id: '1429511'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Discrete Structures
    id: '1429520'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Advanced Internet Technology
    id: '1429547'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Communication Systems Engineering
    id: '1429564'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Embedded Systems
    id: '1429579'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Mobile Internet Technology
    id: '1429605'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Model-Based Software Engineering
    id: '1429626'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Software Architectures
    id: '1429649'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Software Quality Assurance
    id: '1429667'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Software-Engineering programming language Ada 95
    id: '1429682'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Business Process Intelligence
    id: '1429698'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Introduction to Web Technologies
    id: '1429705'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Artificial Intelligence
    id: '1429722'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Knowledge Representation
    id: '1429739'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Automatic Speech Recognition
    id: '1429751'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Computer Vision
    id: '1429777'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Designing Interactive Systems I
    id: '1429790'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Research module
    id: '1429806'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Computer Graphics
    id: '1429819'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: High-Performance Computing
    id: '1429833'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: iOS Application Development
    id: '1429849'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Concepts and Models for Parallel and Data-centric Programming
    id: '1429863'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Performance Analysis and Correctness Checking of Parallel Applications
    id: '1429876'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Digital Fabrication
    id: '1429891'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Physically-Based Animation
    id: '1429899'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Real-time Graphics
    id: '1429913'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Social Data Science
    id: '1429927'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Social Networks
    id: '1429934'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Statistical Classification and Machine Learning
    id: '1429960'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Statistical Methods in Natural Language Processing
    id: '1429975'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Text Mining
    id: '1429990'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Web Mining
    id: '1430004'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Introduction to Anatomy
    id: '1430016'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Introduction to Medicine for Nature Scientists and Engineers 1 and 2
    id: '1430023'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Health Care Systems
    id: '1430035'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Foundations of Cell Biology and Biochemistry
    id: '1430041'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Medical Biometrics and Clinical Epidemiology
    id: '1430051'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Medical Methodology
    id: '1430060'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Methodology of Planning
    id: '1430087'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Transport planning I
    id: '1430094'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Decision Theory
    id: '1430189'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Operations Research
    id: '1430268'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Biology for Students of Computer Sciences and Mathematics
    id: '1430278'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Practical Course Biology for Students of Computer Sciences
    id: '1430294'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Inorganic Chemistry
    id: '1430305'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Organic Chemistry
    id: '1430313'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Computational Chemistry
    id: '1430318'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Theory of Chemical Bonds
    id: '1430325'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Fundamentals of Electrical Engineering 2 - Modeling and Analysis of Electrical
      Components and Circuits
    id: '1430332'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Power Systems
    id: '1430342'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Fundamentals of Integrated Circuits and Systems
    id: '1430349'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Communication Networks
    id: '1430356'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Communications Engineering
    id: '1430362'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Automatic Control
    id: '1430377'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Engineering Mechanics
    id: '1430388'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Optional courses of mechanical engineering
    id: '1430404'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Numerical Analysis I
    id: '1430426'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Practical Course in Mathematics
    id: '1430435'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Numerical Analysis II
    id: '1430442'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Computeralgebra
    id: '1430450'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Complex Analysis I
    id: '1430461'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Experimental Physics I (Mechanics and Relativity)
    id: '1430471'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Experimental Physics II (Heat and Electromagnetism)
    id: '1430482'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Introduction to Physics
    id: '1430491'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Physics lab
    id: '1430505'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: General Introduction to Philosophy
    id: '1430538'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Theory of Argumentation
    id: '1430561'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Practical Philosophy
    id: '1430566'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Computability and Complexity
    id: '1430619'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Mathematical Logic I
    id: '1430628'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Formal Systems, Automata, Processes
    id: '1430635'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Data Structures and Algorithms
    id: '1430644'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Software Engineering
    id: '1430653'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Introduction to Computer Engineering
    id: '1430663'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: System Programming
    id: '1430672'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Operating Systems and System Software
    id: '1430686'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Linear Algebra
    id: '1430695'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Introduction to Applied Stochastics
    id: '1430703'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Databases and Information Systems
    id: '1430710'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Implementation of Databases
    id: '1430724'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Seminar Computer Science
    id: '1430730'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Software Project Lab
    id: '1430838'
    url: https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/
    facets: []
  - name: Advanced Automata Theory
    id: '1430884'
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          "name": "Practical Course in Mathematics",
          "id": "1430435",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Numerical Analysis II",
          "id": "1430442",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Computeralgebra",
          "id": "1430450",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Complex Analysis I",
          "id": "1430461",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Experimental Physics I (Mechanics and Relativity)",
          "id": "1430471",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Experimental Physics II (Heat and Electromagnetism)",
          "id": "1430482",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Introduction to Physics",
          "id": "1430491",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Physics lab",
          "id": "1430505",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "General Introduction to Philosophy",
          "id": "1430538",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Theory of Argumentation",
          "id": "1430561",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Practical Philosophy",
          "id": "1430566",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Computability and Complexity",
          "id": "1430619",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Mathematical Logic I",
          "id": "1430628",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Formal Systems, Automata, Processes",
          "id": "1430635",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Data Structures and Algorithms",
          "id": "1430644",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Software Engineering",
          "id": "1430653",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Introduction to Computer Engineering",
          "id": "1430663",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "System Programming",
          "id": "1430672",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Operating Systems and System Software",
          "id": "1430686",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Linear Algebra",
          "id": "1430695",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Introduction to Applied Stochastics",
          "id": "1430703",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Databases and Information Systems",
          "id": "1430710",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Implementation of Databases",
          "id": "1430724",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Seminar Computer Science",
          "id": "1430730",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Software Project Lab",
          "id": "1430838",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Advanced Automata Theory",
          "id": "1430884",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Bookkeeping and Managerial Accounting",
          "id": "1430932",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Basic Module Philosophical Propaedeutics",
          "id": "1430939",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Introduction to Numerical Methods and Software",
          "id": "1430950",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Infinite Computations and Games",
          "id": "1430956",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Data Communication",
          "id": "1509365",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Elements of Machine Learning and Data Science",
          "id": "1509575",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "IT-Security",
          "id": "1509607",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Bookkeeping and Managerial Accounting",
          "id": "1531579",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        }
      ]
    },
    {
      "name": "Scientific Integrity",
      "id": "1440206",
      "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
      "areas": []
    },
    {
      "name": "Additional Examinations",
      "id": "1456158",
      "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
      "areas": [
        {
          "name": "Modules",
          "id": "1456159",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Partial Examinations",
          "id": "1456160",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Languages",
          "id": "1456161",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Recognized Partial Examinations",
          "id": "1456650",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        },
        {
          "name": "Competences",
          "id": "1457617",
          "url": "https://sc.informatik.rwth-aachen.de/de/studium/master/informatik/",
          "facets": []
        }
      ]
    }
  ],
  "levels": [
    {
      "name": "1,0 - 95%",
      "id": "10 - 95",
      "level": 10
    },
    {
      "name": "1,3 - 90%",
      "id": "13 - 90",
      "level": 9
    },
    {
      "name": "1,7 - 85%",
      "id": "17 - 85",
      "level": 8
    },
    {
      "name": "2,0 - 80%",
      "id": "20 - 80",
      "level": 7
    },
    {
      "name": "2,3 - 75%",
      "id": "23 - 75",
      "level": 6
    },
    {
      "name": "2,7 - 70%",
      "id": "27 - 70",
      "level": 5
    },
    {
      "name": "3,0 - 65%",
      "id": "30 - 65",
      "level": 4
    },
    {
      "name": "3,3 - 60%",
      "id": "33 - 60",
      "level": 3
    },
    {
      "name": "3,7 - 55%",
      "id": "37 - 55",
      "level": 2
    },
    {
      "name": "4,0 - 50%",
      "id": "40 - 50",
      "level": 1
    }
  ],
  "element_names": [
    {
      "tree": "Study plan",
      "aspect": "Study area",
      "area": "Module",
      "facet": "Module element",
      "level": "Grade"
    }
  ]
}```

### Describe the results you expected

I'd expect to get information about where the error happenend to be able to debug.
May be there is a bug in from_dict that prevents the reading then that would need to be fixed.

The failing line:
```python
            # a mapping type has `.keys()` and `.values()`
            # (see collections.abc)
            ks = _decode_dict_keys(k_type, value.keys(), infer_missing)

therfore IMHO needs to check the type before or when trying to decode the dict. If it's not a dict there should be a proper reaction with debug info.

Python version you are using

Python 3.10.13

Environment description

dataclasses-json==0.6.1

WolfgangFahl commented 5 months ago

i changed the code to

       # a mapping type has `.keys()` and `.values()`
            # (see collections.abc)
            if not isinstance(value,dict):
                print("Houston we got a problem!")
            ks = _decode_dict_keys(k_type, value.keys(), infer_missing)

to be able to set a breakpoint and see the culprit data- then the fix is easy - so this is more a feature request then a bug report. Making the code handle the non -dict situation would be helpful

@@ -118,15 +118,14 @@ class TestModule(Basetest):
             CompetenceLevel(name="3,7 - 55%", level=2),
             CompetenceLevel(name="4,0 - 50%", level=1),
         ]
-        tree.element_names = (
-            {
-                "tree": "Study plan",
-                "aspect": "Study area",
-                "area": "Module",
-                "facet": "Module element",
-                "level": "Grade",
-            },
-        )
+        tree.element_names = {
+            "tree": "Study plan",
+            "aspect": "Study area",
+            "area": "Module",
+            "facet": "Module element",
+            "level": "Grade",
+        }
george-zubrienko commented 5 months ago

@WolfgangFahl if you can submit a PR and add some units to improve the error handling, I'd be happy to review. Otherwise, there is a bit too much context details here, if you can narrow the example down to fewer lines of code it would be great

WolfgangFahl commented 5 months ago

Basically the pattern is if your yaml file is not as specified e.g. you move from a list to a dict and vice versa and then throw the wrong yaml file at the json/yaml pipeline the involved dataclasses-json might choke with one or another python arror since the code assumes perfect input. To make the code more robust it might follow Postel's law a bit more and give hints when things are wrong. Also just styling the code better for debugging would help - then one can at least set a breakpoint to find out what went wrong. I'm busy for the upcoming days but will definitely be willing to supply more details and PRs.