Commit Graph

9 Commits

Author SHA1 Message Date
Felix
c7b9dc83f5 [Python] Avoid include own type (#8625)
This prevents the include of the type defined in the pyi,
otherwise this leads to error message like this:
error: Name XYZ already defined (possibly by an import)  [no-redef]
2025-07-15 11:20:09 -07:00
Felix
c15fe421ba Use correct default type for str (#8623)
* [Python] Use correct type for str with None

Otherwise mypy will correctly flag code like this

def __init__(self):
  self.fooBar = None  # type: Optional[str]

error: Incompatible types in assignment (expression has type "None", variable has type "str")

* [Python] Make list type optional as they can contain None
2025-07-04 23:47:36 +00:00
Seth Raymond
75556437cc Decode bytes to strings in Python Object API (#8551) 2025-06-29 01:40:10 -07:00
Felix
dafd2f1f29 [Python] Render enums as Python IntEnum (#8145)
This allows enums to be type check with mypy.
They will still behave like ints ->
> IntEnum is the same as Enum,
> but its members are also integers and can be used anywhere
> that an integer can be used.
> If any integer operation is performed with an IntEnum member,
> the resulting value loses its enumeration status.
https://docs.python.org/3/library/enum.html#enum.IntEnum

Only if the --python-typing flag is set.
2024-06-03 08:39:14 -07:00
Anton Bobukh
3b27f5396e [Python] Generate .pyi stub files when --python-typing is on. (#8312)
* [Python] Generate `.pyi` stub files when `--python-typing` is on.

To support this change, the following modifications were made:

-  added a new option to disable `numpy` helpers generation;
-  added a new flag to control the target Python version:

   `--python-version` can be one of the following:

   - `0.x.x` – compatible with any Python version;
   - `2.x.x` – compatible with Python 2;
   - `3.x.x` – compatible with Python 3.
-  added codegen utilities for Python;
-  added a note that the generated .py file is empty.

* [Python] Update Bazel build rules.

* [Python] Update Bazel build rules.

* [Python] Run buildifier on BUILD.bazel files.

---------

Co-authored-by: Derek Bailey <derekbailey@google.com>
2024-05-29 12:47:29 -07:00
Chih-Hsuan Yen
a352bdbc34 Fix python tests (#7960)
* Don't generate types unless --python-typing specified

Fixes https://github.com/google/flatbuffers/issues/7944

* Fix incorrect import statements

Fixes https://github.com/google/flatbuffers/issues/7951

* Fix $PYTHONPATH in PythonTest.sh

Regressed from https://github.com/google/flatbuffers/pull/7529

* PythonTest: fail if something goes wrong

GitHub Actions runs `bash PythonTest.sh`, and thus failures were not
visible.

* Build flatc for Python tests

* Regenerate codes

---------

Co-authored-by: Derek Bailey <derekbailey@google.com>
2023-05-17 13:10:51 -07:00
Max Burke
a397dd7e8c Optionally generate Python type annotations (#7858)
* optionally generate type prefixes and suffixes for python code

* fix codegen error when qualified name is empty

* WIP: Python typing

* more progress towards python typing

* Further iterate on Python generated code typing

* clang-format

* Regenerate code

* add documentation for Python type annotations option

* generate code with Python type annotations

* handle forward references

* clang-format
2023-04-28 09:38:29 -07:00
Max Burke
56ecc1f548 Optionally generate type prefixes and suffixes for python code (#7857)
* optionally generate type prefixes and suffixes for python code

* fix codegen error when qualified name is empty

* generated code updated
2023-04-25 21:38:16 -07:00
Joshua Smith
043a24f2e4 [Python] Fixed the issue with nested unions relying on InitFromBuf. (#7576)
* feat: Fixed the issue with nested unions relying on InitFromBuf.
Problem: Issue #7569
Nested Unions were broken with the introduction of parsing buffers with an initial encoding offset.

Fix:
Revert the InitFromBuf method to the previous version and introduction of InitFromPackedBuf that allows
users to read types from packed buffers applying the offset automatically.

Test:
Added in TestNestedUnionTables to test the encoding and decoding ability using a nested table with a
union field.

* fix: Uncommented generate code command
2022-10-26 14:56:52 -07:00