>>> import uuid print uuid.uuid3(uuid.uuid1(), 'python.org') >>> # make a UUID based on the host ID and current time
>>> uuid.uuid1()
UUID('a8098c1a-f86e-11da-bd1a-00112444be1e') >>> # make a UUID using an MD5 hash of a namespace UUID and a name
>>> uuid.uuid3(uuid.NAMESPACE_DNS, 'python.org')
UUID('6fa459ea-ee8a-3ca4-894e-db77e160355e') >>> # make a random UUID
>>> uuid.uuid4()
UUID('16fd2706-8baf-433b-82eb-8c7fada847da') >>> # make a UUID using a SHA- hash of a namespace UUID and a name
>>> uuid.uuid5(uuid.NAMESPACE_DNS, 'python.org')
UUID('886313e1-3b8a-5372-9b90-0c9aee199e5d') >>> # make a UUID from a string of hex digits (braces and hyphens ignored)
>>> x = uuid.UUID('{00010203-0405-0607-0809-0a0b0c0d0e0f}') >>> # convert a UUID to a string of hex digits in standard form
>>> str(x)
'00010203-0405-0607-0809-0a0b0c0d0e0f' >>> # get the raw bytes of the UUID
>>> x.bytes
'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f' >>> # make a UUID from a -byte string
>>> uuid.UUID(bytes=x.bytes)
UUID('00010203-0405-0607-0809-0a0b0c0d0e0f')
参考资料：
https://docs.python.org/2/library/uuid.html
http://www.cnblogs.com/dkblog/archive/2011/10/10/2205200.html
http://www.zhihu.com/question/19742113
http://*.com/questions/8773438/django-how-do-i-use-uuidfield-from-django-extensions
http://www.cnblogs.com/lexus/archive/2012/05/04/2483272.html
http://*.com/questions/33375347/django-uuidfield-issue
https://segmentfault.com/a/1190000007098492
http://blog.csdn.net/iloveyin/article/details/44852645