Python:如何将有效的uuid从String转换为UUID?

我收到的数据是

   {
        "name": "Unknown",
        "parent": "Uncategorized",
        "uuid": "06335e84-2872-4914-8c5d-3ed07d2a2f16"
    },

我需要将uuidString转换为uuid

我在python文档上找不到方法,或者我在这里缺少基本的东西吗?

daydreamer asked 2020-08-11T21:44:07Z
3个解决方案
63 votes

只需将其传递给uuid.UUID

import uuid

o = {
    "name": "Unknown",
    "parent": "Uncategorized",
    "uuid": "06335e84-2872-4914-8c5d-3ed07d2a2f16"
}

print uuid.UUID(o['uuid']).hex
Blender answered 2020-08-11T21:44:13Z
4 votes

如果上述答案对将字符串格式的有效UUID转换回实际UUID对象不起作用,那么使用uuid.UUID(your_uuid_string)为我工作。

In [6]: import uuid
   ...:
   ...: o = {
   ...:     "name": "Unknown",
   ...:     "parent": "Uncategorized",
   ...:     "uuid": "06335e84-2872-4914-8c5d-3ed07d2a2f16"
   ...: }
   ...:
   ...: print uuid.UUID(o['uuid']).hex
   ...: print type(uuid.UUID(o['uuid']).hex)
06335e84287249148c5d3ed07d2a2f16
<type 'str'>

In [7]: your_uuid_string = uuid.UUID(o['uuid']).hex

In [8]: print uuid.UUID(your_uuid_string)
06335e84-2872-4914-8c5d-3ed07d2a2f16

In [9]: print type(uuid.UUID(your_uuid_string))
<class 'uuid.UUID'>
Weezy.F answered 2020-08-11T21:44:33Z
3 votes

除非您需要该uuid的字符串表示形式,否则不要在UUID对象上调用str

>>> import uuid
>>> some_uuid = uuid.uuid4()
>>> type(some_uuid)
<class 'uuid.UUID'>
>>> some_uuid_str = some_uuid.hex
>>> some_uuid_str
'5b77bdbade7b4fcb838f8111b68e18ae'
>>> type(some_uuid_str)
<class 'str'>

然后像上面提到的其他将uuid字符串转换回UUID实例的操作:

>>> uuid.UUID(some_uuid_str)
UUID('5b77bdba-de7b-4fcb-838f-8111b68e18ae')
>>> (some_uuid == uuid.UUID(some_uuid_str))
True
>>> (some_uuid == some_uuid_str)
False

您甚至可以设置一个小的辅助实用程序函数来验证str,并在需要时返回UUID:

def is_valid_uuid(val):
    try:
        return uuid.UUID(str(val))
    except ValueError:
        return None

然后使用它:

>>> some_uuid = uuid.uuid4()
>>> is_valid_uuid(some_uuid)
UUID('aa6635e1-e394-463b-b43d-69eb4c3a8570')
>>> type(is_valid_uuid(some_uuid))
<class 'uuid.UUID'>
slajma answered 2020-08-11T21:45:06Z
translate from https://stackoverflow.com:/questions/15859156/python-how-to-convert-a-valid-uuid-from-string-to-uuid