-
Type:
Bug
-
Resolution: Done
-
Priority:
Minor - P4
-
Affects Version/s: None
-
Component/s: None
-
None
On PyMongo 2.8.1, a tuple (and maybe other sequences) were allowed as the parameter to the projection. On PyMongo 3, anything but list and dict seems to raise an error:
$ python -c "__import__('pymongo').MongoClient().test.tests.find(filter=('foo',))"
$ easy_install -q -U pymongo
$ python -c "__import__('pymongo').MongoClient().test.tests.find(filter=('foo',))"
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/pymongo-3.0.2-py3.4-macosx-10.6-intel.egg/pymongo/collection.py", line 929, in find
return Cursor(self, *args, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/pymongo-3.0.2-py3.4-macosx-10.6-intel.egg/pymongo/cursor.py", line 119, in __init__
validate_is_mapping("filter", spec)
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/pymongo-3.0.2-py3.4-macosx-10.6-intel.egg/pymongo/common.py", line 348, in validate_is_mapping
"collections.Mapping" % (option,))
TypeError: filter must be an instance of dict, bson.son.SON, or other type that inherits from collections.Mapping
I suggest that the more lenient form be restored including support of any sequence for the projection field names.