在Python中将字符串转换为Enum [英] Convert string to Enum in Python
本文介绍了在Python中将字符串转换为Enum的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想知道将字符串转换(反序列化)为Python的Enum类的正确方法是什么.似乎 getattr(YourEnumType,str)
可以完成这项工作,但是我不确定它是否足够安全.
I wonder what's the correct way of converting (deserializing) a string to a Python's Enum class. Seems like getattr(YourEnumType, str)
does the job, but I'm not sure if it's safe enough.
更具体地说,我想将'debug'
字符串转换为这样的Enum对象:
Just to be more specific, I would like to convert a 'debug'
string to an Enum object like this:
class BuildType(Enum):
debug = 200
release = 400
推荐答案
此功能已内置到枚举[1]中:
This functionality is already built in to Enum [1]:
>>> from enum import Enum
>>> class Build(Enum):
... debug = 200
... build = 400
...
>>> Build['debug']
<Build.debug: 200>
成员名称区分大小写,因此,如果要转换用户输入,则需要确保大小写匹配:
The member names are case sensitive, so if user-input is being converted you need to make sure case matches:
an_enum = input('Which type of build?')
build_type = Build[an_enum.lower()]
[1]官方文档: 枚举编程访问权限
[1] Official docs: Enum programmatic access
这篇关于在Python中将字符串转换为Enum的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文