'_io.BufferedReader' object has no attribute 'decode'

[spaceone]

I get the error message without an traceback when executing:

# python3 -m openapi_spec_validator openapi.json 
'_io.BufferedReader' object has no attribute 'decode'

# python3 --version
Python 3.7.3
Requirement already satisfied: openapi-spec-validator in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (0.5.6)
Requirement already satisfied: importlib-resources<6.0.0,>=5.8.0 in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from openapi-spec-validator) (5.12.0)                                                                                
Requirement already satisfied: jsonschema<4.18.0,>=4.0.0 in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from openapi-spec-validator) (4.17.3)                                                                                        
Requirement already satisfied: jsonschema-spec<0.2.0,>=0.1.1 in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from openapi-spec-validator) (0.1.4)                                                                                     
Requirement already satisfied: lazy-object-proxy<2.0.0,>=1.7.1 in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from openapi-spec-validator) (1.9.0)                                                                                   
Requirement already satisfied: openapi-schema-validator<0.5.0,>=0.4.2 in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from openapi-spec-validator) (0.4.4)                                                                            
Requirement already satisfied: zipp>=3.1.0 in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from importlib-resources<6.0.0,>=5.8.0->openapi-spec-validator) (3.15.0)                                                                   
Requirement already satisfied: attrs>=17.4.0 in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from jsonschema<4.18.0,>=4.0.0->openapi-spec-validator) (23.1.0)                                                                         
Requirement already satisfied: importlib-metadata in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from jsonschema<4.18.0,>=4.0.0->openapi-spec-validator) (6.6.0)                                                                     
Requirement already satisfied: pkgutil-resolve-name>=1.3.10 in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from jsonschema<4.18.0,>=4.0.0->openapi-spec-validator) (1.3.10)                                                          
Requirement already satisfied: pyrsistent!=0.17.0,!=0.17.1,!=0.17.2,>=0.14.0 in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from jsonschema<4.18.0,>=4.0.0->openapi-spec-validator) (0.19.3)                                         
Requirement already satisfied: typing-extensions in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from jsonschema<4.18.0,>=4.0.0->openapi-spec-validator) (4.6.3)                                                                      
Requirement already satisfied: PyYAML>=5.1 in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from jsonschema-spec<0.2.0,>=0.1.1->openapi-spec-validator) (6.0)                                                                          
Requirement already satisfied: pathable<0.5.0,>=0.4.1 in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from jsonschema-spec<0.2.0,>=0.1.1->openapi-spec-validator) (0.4.3)                                                             
Requirement already satisfied: rfc3339-validator in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from openapi-schema-validator<0.5.0,>=0.4.2->openapi-spec-validator) (0.1.4)                                                         
Requirement already satisfied: six in ./ucs-test-udm-rest-api/lib/python3.7/site-packages (from rfc3339-validator->openapi-schema-validator<0.5.0,>=0.4.2->openapi-spec-validator) (1.16.0) 

[spaceone]

got the traceback with some debugging:

Traceback (most recent call last):
  File "/usr/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/lib/python3.7/site-packages/openapi_spec_validator/__main__.py", line 102, in <module>
    main()
  File "/lib/python3.7/site-packages/openapi_spec_validator/__main__.py", line 73, in main
    spec, spec_url = reader(args_parsed.filename)
  File "/lib/python3.7/site-packages/openapi_spec_validator/readers.py", line 23, in read_from_filename
    return all_urls_handler(uri), uri
  File "/lib/python3.7/site-packages/jsonschema_spec/handlers/file.py", line 45, in __call__
    return self._open(uri)
  File "/lib/python3.7/site-packages/jsonschema_spec/handlers/urllib.py", line 18, in _open
    return super().__call__(fh)
  File "/lib/python3.7/site-packages/jsonschema_spec/handlers/file.py", line 41, in __call__
    parsed_url = urlparse(uri)
  File "/usr/lib/python3.7/urllib/parse.py", line 367, in urlparse
    url, scheme, _coerce_result = _coerce_args(url, scheme)
  File "/usr/lib/python3.7/urllib/parse.py", line 123, in _coerce_args
    return _decode_args(args) + (_encode_result,)
  File "/usr/lib/python3.7/urllib/parse.py", line 107, in _decode_args
    return tuple(x.decode(encoding, errors) if x else '' for x in args)
  File "/usr/lib/python3.7/urllib/parse.py", line 107, in <genexpr>
    return tuple(x.decode(encoding, errors) if x else '' for x in args)
  File "/usr/lib/python3.7/tempfile.py", line 615, in __getattr__
    a = getattr(file, name)
AttributeError: '_io.BufferedReader' object has no attribute 'decode'

[spaceone]

work with an old version: python3 -m pip install openapi-spec-validator==0.4.0 jsonschema-spec==0.1.4

[p1c2u]

Hi @spaceone ,

I can;t reproduce it. Can you prepare minimal example to reproduce the issue?

[spaceone]

Hi @spaceone ,

I can;t reproduce it. Can you prepare minimal example to reproduce the issue?

The exact code we execute is:
https://github.com/univention/univention-corporate-server/blob/87d92592015822ef25b3d052a6b7206295d0e462~/test/ucs-test/tests/73_udm-rest/01_openapi_validation

Our workaround is:
https://github.com/univention/univention-corporate-server/blob/87d92592015822ef25b3d052a6b7206295d0e462/test/ucs-test/tests/73_udm-rest/01_openapi_validation

The content of openapi.json is irrelevant, as that file is not yet used.

[p1c2u]

p1c2u/jsonschema-path#14

Temporary workaround will be downgrading typing-extensions to version below 4.6:

pip install "typing-extensions<4.6"

[spaceone]

wonderful, thanks!

[ambadyanands]

p1c2u/jsonschema-path#14

Temporary workaround will be downgrading typing-extensions to version below 4.6:

pip install "typing-extensions<4.6"

Unfortuantely this breaks compatibility with pydantic now.

ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
pydantic-core 2.10.0 requires typing-extensions!=4.7.0,>=4.6.0, but you have typing-extensions 4.5.0 which is incompatible.
pydantic 2.4.0 requires typing-extensions>=4.6.1, but you have typing-extensions 4.5.0 which is incompatible.

Any idea about what would be a proper solution that will work with latest/recent version of the dependencies?

Here's the related issue for reference, if it helps:
https://gitlab.com/gnukhata/gkcore/-/issues/745

Edit:
I mixed up the issues on downgrading openapi-spec-validator with the issues on downgrading typing-extensions. The downgrade related issue regarding the latter is with pydantic. Updated the error message above to fix the same.