Hướng dẫn python typeddict enum - python typeddict enum

Mô tả lỗi

Nếu

************* Module test
test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

************* Module test
test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

# pylint: disable=missing-class-docstring, missing-module-docstring, missing-function-docstring, invalid-name
from enum import Enum
from typing import TypedDict


class TypedDictionary(TypedDict):
    name: str


class Enumerations(Enum):
    KEY1: TypedDictionary = {"name": "from enum"}


def return_enum_value() -> TypedDictionary:
    return Enumerations.KEY1.value


def return_typed_dict() -> TypedDictionary:
    return {"name": "from function"}


if __name__ == "__main__":
    value1: TypedDictionary = {"name": "flat"}
    assert value1["name"] == "flat"

    value2 = return_typed_dict()
    assert value2["name"] == "from function"

    value3 = Enumerations.KEY1.value
    assert value3["name"] == "from enum"

    value4 = return_enum_value()
    assert value4["name"] == "from enum"

Cấu hình

Không phản hồi

Lệnh được sử dụng

Đầu ra pylint

************* Module test
test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

Hành vi mong đợi

************* Module test
test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

************* Module test
test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

Phiên bản pylint

pylint 2.14.5
astroid 2.11.7
Python 3.10.5 (main, Jun 23 2022, 17:14:57) [Clang 13.1.6 (clang-1316.0.21.2.5)]

Hệ điều hành / môi trường

MacOS 12,5 ZSH 5.8.1 (x86_64-apple-darwin21.0) VSCODE 1.70.0 (Universal) với Python Extension V2022.12.0
zsh 5.8.1 (x86_64-apple-darwin21.0)
VSCode 1.70.0 (Universal) with Python extension v2022.12.0

Phụ thuộc bổ sung

Không phản hồi

Jukkal đã thêm một cam kết tham chiếu vấn đề này

A union of enum literals was merged back to the enum type, which broke
type narrowing. Disable merging in this case to work around the
issue.

The fix feels a bit ad hoc. However, I'd rather not spend a lot of
time figuring out a general fix, since this seems like a pretty rare
edge case.

Fixes #10414.

Jukkal đã thêm một cam kết tham chiếu vấn đề này

A union of enum literals was merged back to the enum type, which broke
type narrowing. Disable merging in this case to work around the
issue.

The fix feels a bit ad hoc. However, I'd rather not spend a lot of
time figuring out a general fix, since this seems like a pretty rare
edge case.

Fixes #10414.

Mặc dù điều này không trả lời câu hỏi như được hỏi, tôi nghĩ bạn cũng có thể xem xét lại lý do tại sao bạn sử dụng

************* Module test
test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

************* Module test
test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

************* Module test
test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

Ví dụ:

import dataclasses as dc
import json
from enum import Enum


class Transaction(Enum):
    DISBURSEMENT = "disbursement"
    REFUND = "refund"
    ROLLBACK = "rollback"

    def __str__(self):
        return self.value


@dc.dataclass
class Disbursement:
    transaction: Transaction
    id_: str
    amount: float

    def __str__(self):
        return json.dumps(dc.asdict(self), default=str)


if __name__ == "__main__":
    disbursement = Disbursement(
        Transaction.REFUND,
        "1",
        4400.24,
    )
    print(disbursement)

$ mypy example.py
Success: no issues found in 1 source file
$ python3 example.py
{"transaction": "refund", "id_": "1", "amount": 4400.24}

Ngoài ra, bạn có thể có ENUM kế thừa từ

************* Module test
test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

import dataclasses as dc
import json
from enum import Enum


class Transaction(str, Enum):
    DISBURSEMENT = "disbursement"
    REFUND = "refund"
    ROLLBACK = "rollback"


@dc.dataclass
class Disbursement:
    transaction: Transaction
    id_: str
    amount: float

    def __str__(self):
        return json.dumps(dc.asdict(self))


if __name__ == "__main__":
    disbursement = Disbursement(
        Transaction.REFUND,
        "1",
        4400.24,
    )
    print(disbursement)

Những ý kiến ​​khác:

• Python 3.11 sẽ có

  ************* Module test
  test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
  test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

  8: https://docs.python.org/3.11/howto/enum.html#strenum
• Ghi chú về lớp con enum: https://docs.python.org/3/l Library/enum.html#others
• So sánh bình đẳng với các chuỗi có lẽ nên tránh: https://www.cosmicpython.com/blog/2020-10-27-I-hate-enums.html (thích

  ************* Module test
  test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
  test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

  9 đến

  pylint 2.14.5
  astroid 2.11.7
  Python 3.10.5 (main, Jun 23 2022, 17:14:57) [Clang 13.1.6 (clang-1316.0.21.2.5)]

  0 hoặc

  pylint 2.14.5
  astroid 2.11.7
  Python 3.10.5 (main, Jun 23 2022, 17:14:57) [Clang 13.1.6 (clang-1316.0.21.2.5)]

  1
• Kế thừa từ

  pylint 2.14.5
  astroid 2.11.7
  Python 3.10.5 (main, Jun 23 2022, 17:14:57) [Clang 13.1.6 (clang-1316.0.21.2.5)]

  2 có thể có một số nhược điểm: Làm thế nào để giảm bớt sự liệt kê với biểu diễn chuỗi?

Cuối cùng, tôi muốn lưu ý rằng việc xác định

pylint 2.14.5
astroid 2.11.7
Python 3.10.5 (main, Jun 23 2022, 17:14:57) [Clang 13.1.6 (clang-1316.0.21.2.5)]

************* Module test
test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

pylint 2.14.5
astroid 2.11.7
Python 3.10.5 (main, Jun 23 2022, 17:14:57) [Clang 13.1.6 (clang-1316.0.21.2.5)]

pylint 2.14.5
astroid 2.11.7
Python 3.10.5 (main, Jun 23 2022, 17:14:57) [Clang 13.1.6 (clang-1316.0.21.2.5)]

class Example:
    def __repr__(self):
        print("I called repr!")
        return "from repr"

    def __str__(self):
        print("I called str!")
        return "from str"


if __name__ == "__main__":
    print(f"example: {Example()}\n")

    d = {"example": Example()}
    print(f"in a dict: {d}")

$ python3 foo.py
I called str!
example: from str

I called repr!
in a dict: {'example': from repr}

Ngoài ra, bạn không thể thêm các phương thức tùy chỉnh vào

************* Module test
test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

pylint 2.14.5
astroid 2.11.7
Python 3.10.5 (main, Jun 23 2022, 17:14:57) [Clang 13.1.6 (clang-1316.0.21.2.5)]

************* Module test
test.py:30:11: E1136: Value 'value3' is unsubscriptable (unsubscriptable-object)
test.py:33:11: E1136: Value 'value4' is unsubscriptable (unsubscriptable-object)

A union of enum literals was merged back to the enum type, which broke
type narrowing. Disable merging in this case to work around the
issue.

The fix feels a bit ad hoc. However, I'd rather not spend a lot of
time figuring out a general fix, since this seems like a pretty rare
edge case.

Fixes #10414.

pylint 2.14.5
astroid 2.11.7
Python 3.10.5 (main, Jun 23 2022, 17:14:57) [Clang 13.1.6 (clang-1316.0.21.2.5)]

A union of enum literals was merged back to the enum type, which broke
type narrowing. Disable merging in this case to work around the
issue.

The fix feels a bit ad hoc. However, I'd rather not spend a lot of
time figuring out a general fix, since this seems like a pretty rare
edge case.

Fixes #10414.

A union of enum literals was merged back to the enum type, which broke
type narrowing. Disable merging in this case to work around the
issue.

The fix feels a bit ad hoc. However, I'd rather not spend a lot of
time figuring out a general fix, since this seems like a pretty rare
edge case.

Fixes #10414.

A union of enum literals was merged back to the enum type, which broke
type narrowing. Disable merging in this case to work around the
issue.

The fix feels a bit ad hoc. However, I'd rather not spend a lot of
time figuring out a general fix, since this seems like a pretty rare
edge case.

Fixes #10414.

pylint 2.14.5
astroid 2.11.7
Python 3.10.5 (main, Jun 23 2022, 17:14:57) [Clang 13.1.6 (clang-1316.0.21.2.5)]