id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,pull_request,body,repo,type,active_lock_reason,performed_via_github_app,reactions,draft,state_reason
1026794056,I_kwDOCGYnMM49M6JI,331,Mypy error: found module but no type hints or library stubs,53032010,closed,0,,,2,2021-10-14T20:29:50Z,2021-11-14T23:21:08Z,2021-11-14T23:21:08Z,NONE,,"```
Python 3.9.5
mypy 0.910
sqlite-utils 3.17.1
```

While using sqlite-utils as a library, when I use mypy for static type checking, it throws an error:

```
mypy .
src/etl.py:5: error: Skipping analyzing ""sqlite_utils"": found module but no type hints or library stubs
    import sqlite_utils
    ^
src/etl.py:5: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
test/test_etl.py:4: error: Skipping analyzing ""sqlite_utils"": found module but no type hints or library stubs
    import sqlite_utils
    ^
Found 2 errors in 2 files (checked 7 source files)
```


When I add a `py.typed` file to the sqlite-utils package to mark it as PEP 561 compatible, the error goes away.

```
al@nbal ..b/python3.9/site-packages/sqlite_utils (git)-[main] % la
total 200
drwx------   3 al al   4096 Oct 14 22:00 .
drwx------ 117 al al   4096 Oct 12 21:12 ..
-rw-------   1 al al  64409 Oct 12 21:11 cli.py
-rw-------   1 al al 109092 Oct 12 21:11 db.py
-rw-------   1 al al      0 Oct 14 22:00 py.typed
-rw-------   1 al al    684 Oct 12 21:11 recipes.py
-rw-------   1 al al   7988 Oct 12 21:11 utils.py
-rw-------   1 al al    113 Oct 12 21:11 __init__.py
```

I would like to suggest adding a `py.typed` file to the repository.

See also the mypy docs on creating PEP 561 compatible packages:
https://mypy.readthedocs.io/en/stable/installed_packages.html#creating-pep-561-compatible-packages

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