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Commit387e59f

Browse files
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Merge pull request#1702 from python-gitlab/jlvillal/attribute_help
chore: attempt to be more informative for missing attributes
2 parentse6582a3 +1839c9e commit387e59f

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4 files changed

+71
-5
lines changed

4 files changed

+71
-5
lines changed

‎docs/faq.rst‎

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Original file line numberDiff line numberDiff line change
@@ -16,6 +16,18 @@ I cannot edit the merge request / issue I've just retrieved
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See the:ref:`merge requests example<merge_requests_examples>` and the
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:ref:`issues examples<issues_examples>`.
1818

19+
.. _attribute_error_list:
20+
21+
I get an ``AttributeError`` when accessing attributes of an object retrieved via a ``list()`` call.
22+
Fetching a list of objects, doesn’t always include all attributes in the
23+
objects. To retrieve an object with all attributes use a ``get()`` call.
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Example with projects::
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27+
for projects in gl.projects.list():
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# Retrieve project object with all attributes
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project = gl.projects.get(project.id)
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1931
How can I clone the repository of a project?
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python-gitlab doesn't provide an API to clone a project. You have to use a
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git library or call the ``git`` command.

‎gitlab/base.py‎

Lines changed: 34 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -16,9 +16,11 @@
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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importimportlib
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importtextwrap
1920
fromtypesimportModuleType
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fromtypingimportAny,Dict,Iterable,NamedTuple,Optional,Tuple,Type
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importgitlab
2224
fromgitlabimporttypesasg_types
2325
fromgitlab.exceptionsimportGitlabParsingError
2426

@@ -32,6 +34,12 @@
3234
]
3335

3436

37+
_URL_ATTRIBUTE_ERROR= (
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f"https://python-gitlab.readthedocs.io/en/{gitlab.__version__}/"
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f"faq.html#attribute-error-list"
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)
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42+
3543
classRESTObject(object):
3644
"""Represents an object built from server data.
3745
@@ -45,13 +53,20 @@ class RESTObject(object):
4553

4654
_id_attr:Optional[str]="id"
4755
_attrs:Dict[str,Any]
56+
_created_from_list:bool# Indicates if object was created from a list() action
4857
_module:ModuleType
4958
_parent_attrs:Dict[str,Any]
5059
_short_print_attr:Optional[str]=None
5160
_updated_attrs:Dict[str,Any]
5261
manager:"RESTManager"
5362

54-
def__init__(self,manager:"RESTManager",attrs:Dict[str,Any])->None:
63+
def__init__(
64+
self,
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manager:"RESTManager",
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attrs:Dict[str,Any],
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*,
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created_from_list:bool=False,
69+
)->None:
5570
ifnotisinstance(attrs,dict):
5671
raiseGitlabParsingError(
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"Attempted to initialize RESTObject with a non-dictionary value: "
@@ -64,6 +79,7 @@ def __init__(self, manager: "RESTManager", attrs: Dict[str, Any]) -> None:
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"_attrs":attrs,
6580
"_updated_attrs": {},
6681
"_module":importlib.import_module(self.__module__),
82+
"_created_from_list":created_from_list,
6783
}
6884
)
6985
self.__dict__["_parent_attrs"]=self.manager.parent_attrs
@@ -106,8 +122,22 @@ def __getattr__(self, name: str) -> Any:
106122
exceptKeyError:
107123
try:
108124
returnself.__dict__["_parent_attrs"][name]
109-
exceptKeyError:
110-
raiseAttributeError(name)
125+
exceptKeyErrorasexc:
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message= (
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f"{type(self).__name__!r} object has no attribute{name!r}"
128+
)
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ifself._created_from_list:
130+
message= (
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f"{message}\n\n"
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+textwrap.fill(
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f"{self.__class__!r} was created via a list() call and "
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f"only a subset of the data may be present. To ensure "
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f"all data is present get the object using a "
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f"get(object.id) call. For more details, see:"
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)
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+f"\n\n{_URL_ATTRIBUTE_ERROR}"
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)
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raiseAttributeError(message)fromexc
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112142
def__setattr__(self,name:str,value:Any)->None:
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self.__dict__["_updated_attrs"][name]=value
@@ -229,7 +259,7 @@ def __next__(self) -> RESTObject:
229259

230260
defnext(self)->RESTObject:
231261
data=self._list.next()
232-
returnself._obj_cls(self.manager,data)
262+
returnself._obj_cls(self.manager,data,created_from_list=True)
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@property
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defcurrent_page(self)->int:

‎gitlab/mixins.py‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -240,7 +240,7 @@ def list(self, **kwargs: Any) -> Union[base.RESTObjectList, List[base.RESTObject
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assertself._obj_clsisnotNone
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obj=self.gitlab.http_list(path,**data)
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ifisinstance(obj,list):
243-
return [self._obj_cls(self,item)foriteminobj]
243+
return [self._obj_cls(self,item,created_from_list=True)foriteminobj]
244244
else:
245245
returnbase.RESTObjectList(self,self._obj_cls,obj)
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‎tests/unit/test_base.py‎

Lines changed: 24 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -90,6 +90,30 @@ def test_instantiate_non_dict(self, fake_gitlab, fake_manager):
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withpytest.raises(gitlab.exceptions.GitlabParsingError):
9191
FakeObject(fake_manager, ["a","list","fails"])
9292

93+
deftest_missing_attribute_does_not_raise_custom(self,fake_gitlab,fake_manager):
94+
"""Ensure a missing attribute does not raise our custom error message
95+
if the RESTObject was not created from a list"""
96+
obj=FakeObject(manager=fake_manager,attrs={"foo":"bar"})
97+
withpytest.raises(AttributeError)asexcinfo:
98+
obj.missing_attribute
99+
exc_str=str(excinfo.value)
100+
assert"missing_attribute"inexc_str
101+
assert"was created via a list()"notinexc_str
102+
assertbase._URL_ATTRIBUTE_ERRORnotinexc_str
103+
104+
deftest_missing_attribute_from_list_raises_custom(self,fake_gitlab,fake_manager):
105+
"""Ensure a missing attribute raises our custom error message if the
106+
RESTObject was created from a list"""
107+
obj=FakeObject(
108+
manager=fake_manager,attrs={"foo":"bar"},created_from_list=True
109+
)
110+
withpytest.raises(AttributeError)asexcinfo:
111+
obj.missing_attribute
112+
exc_str=str(excinfo.value)
113+
assert"missing_attribute"inexc_str
114+
assert"was created via a list()"inexc_str
115+
assertbase._URL_ATTRIBUTE_ERRORinexc_str
116+
93117
deftest_picklability(self,fake_manager):
94118
obj=FakeObject(fake_manager, {"foo":"bar"})
95119
original_obj_module=obj._module

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