TypePigeon

TypePigeon是一个专注于在Python各种数据类型之间转换值的Python类型转换器。

pip install typepigeon

特性

• 使用to_type()直接将值从一种Python类型转换为另一种类型
• 使用to_json()将值转换为JSON格式
• 使用subscripted_type()将泛型别名（List[str]）转换为简单集合类型（[str]）

使用方法

使用TypePigeon，您可以轻松地将简单值从一种类型转换为另一种类型

to_type()

import typepigeon

typepigeon.to_type(0.55, str)
'0.55'

typepigeon.to_type(1, float)
1.0

typepigeon.to_type([1], str)
'[1]'

此外，您还可以将值转换为集合

import typepigeon

typepigeon.to_type([1, 2.0, '3'], [int])
[1, 2, 3]

typepigeon.to_type('[1, 2, 3]', (int, str, float))
[1, '2', 3.0]

typepigeon.to_type({'a': 2.5, 'b': 4, 3: '18'}, {str: float})
{'a': 2.5, 'b': 4.0, '3': 18.0}

一些常用类，如datetime和CRS也得到支持

from datetime import datetime, timedelta

from pyproj import CRS
import typepigeon

typepigeon.to_type(datetime(2021, 3, 26), str)
'2021-03-26 00:00:00'

typepigeon.to_type('20210326', datetime)
datetime(2021, 3, 26)

typepigeon.to_type('01:13:20:00', timedelta)
timedelta(days=1, hours=13, minutes=20, seconds=0)

typepigeon.to_type(timedelta(hours=1), str)
'01:00:00.0'

typepigeon.to_type(timedelta(hours=1), int)
3600

typepigeon.to_type(CRS.from_epsg(4326), int)
4326

typepigeon.to_type(CRS.from_epsg(4326), str)
'GEOGCRS["WGS 84",ENSEMBLE["World Geodetic System 1984 ensemble",MEMBER["World Geodetic System 1984 (Transit)"],MEMBER["World Geodetic System 1984 (G730)"],MEMBER["World Geodetic System 1984 (G873)"],MEMBER["World Geodetic System 1984 (G1150)"],MEMBER["World Geodetic System 1984 (G1674)"],MEMBER["World Geodetic System 1984 (G1762)"],ELLIPSOID["WGS 84",6378137,298.257223563,LENGTHUNIT["metre",1]],ENSEMBLEACCURACY[2.0]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic latitude (Lat)",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic longitude (Lon)",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],USAGE[SCOPE["Horizontal component of 3D system."],AREA["World."],BBOX[-90,-180,90,180]],ID["EPSG",4326]]'

typepigeon.to_type(4326, CRS)
CRS.from_epsg(4326)

to_json()

from datetime import datetime

import typepigeon

typepigeon.to_json(5)
5

typepigeon.to_json('5')
'5'

typepigeon.to_json(datetime(2021, 3, 26))
'2021-03-26 00:00:00'

typepigeon.to_json([5, '6', {3: datetime(2021, 3, 27)}])
[5, '6', {3: '2021-03-27 00:00:00'}]

typepigeon.to_json({'test': [5, '6', {3: datetime(2021, 3, 27)}]})
{'test': [5, '6', {3: '2021-03-27 00:00:00'}]}

subscripted_type()

import typepigeon.types
from typing import Dict, List, Tuple

import typepigeon

typepigeon.types.subscripted_type(List[str])
[str]

typepigeon.types.subscripted_type(Dict[str, float])
{str: float}

typepigeon.types.subscripted_type({str: (Dict[int, str], str)})
{str: ({int: str}, str)}