Merge pull request #265 from m-aciek/shorten-tracebacks

Author: mciszczon

.pylintrc

@@ -150,8 +150,7 @@ disable=print-statement,
         import-outside-toplevel,
         isinstance-second-argument-not-valid-type,
         unsubscriptable-object,
-        comparison-with-callable,
-        raise-missing-from
+        comparison-with-callable
 
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option

CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Fix value creation for a field with a default factory
+- Suppress context in dacite ForwardReferenceError and MissingValueError
 
 ## [1.8.0] - 2023-01-26
 

dacite/core.py

@@ -52,8 +52,7 @@ def from_dict(data_class: Type[T], data: Data, config: Optional[Config] = None)
     try:
         data_class_hints = cache(get_concrete_type_hints)(data_class, localns=config.hashable_forward_references)
     except NameError as error:
-        raise ForwardReferenceError(str(error))
-
+        raise ForwardReferenceError(str(error)) from None
     data_class_fields = cache(get_fields)(data_class)
 
     if config.strict:
@@ -79,8 +78,7 @@ def from_dict(data_class: Type[T], data: Data, config: Optional[Config] = None)
             except DefaultValueNotFoundError:
                 if not field.init:
                     continue
-                raise MissingValueError(field.name)
-
+                raise MissingValueError(field.name) from None
         if field.init:
             init_values[field.name] = value
         elif not is_frozen(data_class):

tests/core/test_base.py

@@ -69,6 +69,7 @@ class X:
 
     assert str(exception_info.value) == 'missing value for field "i"'
     assert exception_info.value.field_path == "i"
+    assert exception_info._excinfo[1].__suppress_context__
 
 
 def test_from_dict_with_nested_data_class():

tests/core/test_config.py

@@ -147,6 +147,7 @@ class Y:
         from_dict(X, {"y": {"s": "text"}})
 
     assert str(exception_info.value) == "can not resolve forward reference: name 'Y' is not defined"
+    assert exception_info._excinfo[1].__suppress_context__
 
 
 def test_form_dict_with_disabled_type_checking():