PYTHON-3493 Bulk Write InsertOne Should Be Parameter Of Collection Type #1106

juliusgeo · 2022-11-02T20:08:32Z

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pymongo/operations.py

blink1073 · 2022-11-03T12:09:11Z

  File "/home/runner/work/mongo-python-driver/mongo-python-driver/pymongo/operations.py", line 22, in <module>
    from pymongo.typings import RawBSONDocument, _CollationIn, _DocumentType, _Pipeline
ImportError: cannot import name 'RawBSONDocument' from 'pymongo.typings' (/home/runner/work/mongo-python-driver/mongo-python-driver/pymongo/typings.py)

That import is only during type checking, you'll have to import from the raw_bson module directly.

pymongo/collection.py

blink1073 · 2022-11-03T14:07:50Z

It looks like typing_extensions is still not installed in EG:

[2022/11/03 13:33:05.363] ERROR: name 'Movie' is not defined (NameError)
 [2022/11/03 13:33:05.363] Traceback (most recent call last):
[2022/11/03 13:33:05.363]   File "/data/mci/ad80d9537e77ee1c525bef8a857fbff0/src/test/test_mypy.py", line 121, in test_bulk_write
[2022/11/03 13:33:05.363]     requests: List[InsertOne[Movie]] = [InsertOne(Movie(name="American Graffiti", year=1973))]
[2022/11/03 13:33:05.363] NameError: name 'Movie' is not defined

test/test_session.py

test/test_server_selection.py

pymongo/typings.py

blink1073

LGTM!

ShaneHarvey · 2022-11-08T23:13:12Z

doc/examples/type_hints.rst

+  >>> assert result["_id"]
+
+This same typing scheme works for all of the insert methods (`insert_one`, `insert_many`, and `bulk_write`). For `bulk_write`,
+both `InsertOne/Many` and `ReplaceOne/Many` operators are generic.


There's no such thing as InsertMany or ReplaceMany.

Also can you make these rst links to the methods and classes (:meth:...).

@juliusgeo ReplaceMany should be removed, there is no ReplaceMany operator

ShaneHarvey · 2022-11-09T19:03:31Z

doc/examples/type_hints.rst

+
+This same typing scheme works for all of the insert methods (:meth:`~pymongo.collection.Collection.insert_one`,
+:meth:`~pymongo.collection.Collection.insert_many`, and :meth:`~pymongo.collection.Collection.bulk_write`).
+For `bulk_write`, :py:class:`~pymongo.operations.InsertOne`, :py:class:`~pymongo.operations.ReplaceOne`, and


:py:class: -> :class:

ShaneHarvey · 2022-11-09T19:46:57Z

doc/examples/type_hints.rst

+This same typing scheme works for all of the insert methods (:meth:`~pymongo.collection.Collection.insert_one`,
+:meth:`~pymongo.collection.Collection.insert_many`, and :meth:`~pymongo.collection.Collection.bulk_write`).
+For `bulk_write`, :class:`~pymongo.operations.InsertOne`, :class:`~pymongo.operations.ReplaceOne`, and
+:class:`~pymongo.operations.UpdateMany` operators are generic.


UpdateMany is not generic.

It is made generic in this PR. Line 378 of operations.py. The name of the class is elided from the GitHub diff view. That would mean I need to add tests, though. I will do that.

ShaneHarvey · 2022-11-09T19:48:30Z

pymongo/operations.py

@@ -374,7 +375,7 @@ class UpdateMany(_UpdateOp):
    def __init__(
        self,
        filter: Mapping[str, Any],
-        update: Union[Mapping[str, Any], _Pipeline],
+        update: Union[_DocumentType, RawBSONDocument, _Pipeline],


Woah, the update doc for UpdateOne and UdateMany shouldn't accept the _DocumentType. The update is a mapping like this {"$inc": ...}, not a full doucment.

Ah, I see. Those were added in without tests, hence why that wasn't noticed. I will remove those changes.

ShaneHarvey · 2022-11-09T20:06:51Z

test/test_database.py

@@ -201,7 +201,7 @@ def test_list_collection_names_filter(self):
        db.capped.insert_one({})
        db.non_capped.insert_one({})
        self.addCleanup(client.drop_database, db.name)
-
+        filter: dict


This is a type hint for mypy so that this error does not occur:

(python3.11) ➜ mongo-python-driver git:(PYTHON-3493) mypy --install-types --non-interactive --disable-error-code var-annotated --disable-error-code attr-defined --disable-error-code union-attr --disable-error-code assignment --disable-error-code no-redef --disable-error-code index --allow-redefinition --allow-untyped-globals --exclude "test/mypy_fails/*.*" test test/test_database.py: note: In member "test_list_collection_names_filter" of class "TestDatabase": test/test_database.py:208: error: Argument "filter" to "list_collection_names" of "Database" has incompatible type "object"; expected "Optional[Mapping[str, Any]]" [arg-type] names = db.list_collection_names(filter=filter) ^~~~~~ Found 1 error in 1 file (checked 121 source files)

Oh I see. I thought it was a copy/past error. Down below there's already filter: Any. Can we define this once? perhaps filter: Union[None, dict] would be better?

Yup, that works.

ShaneHarvey · 2022-11-09T20:07:53Z

test/test_bulk.py

@@ -347,7 +347,7 @@ def test_bulk_write_no_results(self):

    def test_bulk_write_invalid_arguments(self):
        # The requests argument must be a list.
-        generator = (InsertOne({}) for _ in range(10))
+        generator = (InsertOne[dict]({}) for _ in range(10))


Why are these changes required? This seems annoyingly verbose for users.

This is required because otherwise mypy complains:

(python3.11) ➜ mongo-python-driver git:(PYTHON-3493) ✗ mypy --install-types --non-interactive --disable-error-code var-annotated --disable-error-code attr-defined --disable-error-code union-attr --disable-error-code assignment --disable-error-code no-redef --disable-error-code index --allow-redefinition --allow-untyped-globals --exclude "test/mypy_fails/*.*" test test/test_bulk.py: note: In member "test_numerous_inserts" of class "TestBulk": test/test_bulk.py:299: error: Argument 1 to "InsertOne" has incompatible type "Dict[<nothing>, <nothing>]"; expected "RawBSONDocument" [arg-type] requests = [InsertOne({}) for _ in range(n_docs)] ^~ Found 1 error in 1 file (checked 121 source files)

I'm not sure why it doesn't resolve to the bound of the TypeVar.

For the same reason we need a type annotation on MongoClient

Oh I see, it's just empty/untyped dictionary. A non-empty dict works without a manual type annotation:

InsertOne({}) # Argument 1 to "InsertOne" has incompatible type "Dict[<nothing>, <nothing>]"; expected "RawBSONDocument" InsertOne({"a": 1}). # This works

It's a shame the error message is so opaque.

blink1073 · 2022-11-10T19:05:07Z

doc/examples/type_hints.rst

+For `bulk_write` both :class:`~pymongo.operations.InsertOne` and :class:`~pymongo.operations.ReplaceOne` operators are generic.
+
+.. doctest::
+


This needs the python version guard

Speaking of, please schedule the docs and doctest evergreen tasks when changing things like this.

juliusgeo added 2 commits November 2, 2022 13:07

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add test for replaceone

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remove unecessary generics

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juliusgeo added 2 commits November 3, 2022 06:14

fix mro and remove type hint

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fix another mro

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a large number of type changes

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juliusgeo force-pushed the PYTHON-3493 branch from f92e4cc to cf8f8b0 Compare November 3, 2022 20:06

juliusgeo added 7 commits November 3, 2022 13:58

fix autoformatter and get rid of uneeded cast

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fix autoformatter mangling again

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fix annotation

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fix evg failures and try to address mypy failure

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forgot an import

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change type ignore

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actually fix the true error

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juliusgeo commented Nov 7, 2022

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remove unused import

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juliusgeo marked this pull request as ready for review November 7, 2022 17:01

juliusgeo requested a review from ShaneHarvey as a code owner November 7, 2022 17:01

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juliusgeo added 4 commits November 8, 2022 11:09

add more testing, add notes

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fix pre-commit

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simplify assertion

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juliusgeo requested a review from blink1073 November 8, 2022 20:29

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add rst links etc

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juliusgeo requested a review from ShaneHarvey November 9, 2022 16:24

forgot to add ReplaceMany

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juliusgeo added 2 commits November 9, 2022 11:05

remove py

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it was updatemany, not replacemany oops

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juliusgeo added 2 commits November 9, 2022 11:57

revert updatemany changes

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combine the two type hints

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juliusgeo and others added 4 commits November 10, 2022 10:12

Merge branch 'master' into PYTHON-3493

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fix merge errors

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fix another malformed merge

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had weird failures locally for some reason

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juliusgeo merged commit 92e6150 into mongodb:master Nov 10, 2022

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PYTHON-3493 Bulk Write InsertOne Should Be Parameter Of Collection Type #1106

PYTHON-3493 Bulk Write InsertOne Should Be Parameter Of Collection Type #1106

juliusgeo commented Nov 2, 2022

blink1073 commented Nov 3, 2022

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ShaneHarvey Nov 10, 2022

		For `bulk_write` both :class:`~pymongo.operations.InsertOne` and :class:`~pymongo.operations.ReplaceOne` operators are generic.

		.. doctest::

PYTHON-3493 Bulk Write InsertOne Should Be Parameter Of Collection Type #1106

PYTHON-3493 Bulk Write InsertOne Should Be Parameter Of Collection Type #1106

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juliusgeo commented Nov 2, 2022

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