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This module provides immutable UUID objects (class UUID) and the functions
uuid1(), uuid3(), uuid4(), uuid5() for generating version 1, 3, 4, and 5
UUIDs as specified in RFC 4122.
If all you want is a unique ID, you should probably call uuid1() or uuid4().
Note that uuid1() may compromise privacy since it creates a UUID containing
the computer's network address. uuid4() creates a random UUID.
Typical usage:
>>> import uuid
# make a UUID based on the host ID and current time
>>> uuid.uuid1() # doctest: +SKIP
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() # doctest: +SKIP
UUID('16fd2706-8baf-433b-82eb-8c7fada847da')
# make a UUID using a SHA-1 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 16 bytes of the UUID
>>> x.bytes
b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f'
# make a UUID from a 16-byte string
>>> uuid.UUID(bytes=x.bytes)
UUID('00010203-0405-0607-0809-0a0b0c0d0e0f')
zKa-Ping Yee <ping@zesty.ca>z reserved for NCS compatibilityzspecified in RFC 4122z$reserved for Microsoft compatibilityz reserved for future definitionc @ s� e Z d Z d Z d d d d d d d d � Z d d � Z d d � Z d d
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d d � Z d d � Z e d d � � Z e d d � � Z e d d � � Z e d! d" � � Z e d# d$ � � Z e d% d& � � Z e d' d( � � Z e d) d* � � Z e d+ d, � � Z e d- d. � � Z e d/ d0 � � Z e d1 d2 � � Z e d3 d4 � � Z e d5 d6 � � Z e d7 d8 � � Z d S)9�UUIDa� Instances of the UUID class represent UUIDs as specified in RFC 4122.
UUID objects are immutable, hashable, and usable as dictionary keys.
Converting a UUID to a string with str() yields something in the form
'12345678-1234-1234-1234-123456789abc'. The UUID constructor accepts
five possible forms: a similar string of hexadecimal digits, or a tuple
of six integer fields (with 32-bit, 16-bit, 16-bit, 8-bit, 8-bit, and
48-bit values respectively) as an argument named 'fields', or a string
of 16 bytes (with all the integer fields in big-endian order) as an
argument named 'bytes', or a string of 16 bytes (with the first three
fields in little-endian order) as an argument named 'bytes_le', or a
single 128-bit integer as an argument named 'int'.
UUIDs have these read-only attributes:
bytes the UUID as a 16-byte string (containing the six
integer fields in big-endian byte order)
bytes_le the UUID as a 16-byte string (with time_low, time_mid,
and time_hi_version in little-endian byte order)
fields a tuple of the six integer fields of the UUID,
which are also available as six individual attributes
and two derived attributes:
time_low the first 32 bits of the UUID
time_mid the next 16 bits of the UUID
time_hi_version the next 16 bits of the UUID
clock_seq_hi_variant the next 8 bits of the UUID
clock_seq_low the next 8 bits of the UUID
node the last 48 bits of the UUID
time the 60-bit timestamp
clock_seq the 14-bit sequence number
hex the UUID as a 32-character hexadecimal string
int the UUID as a 128-bit integer
urn the UUID as a URN as specified in RFC 4122
variant the UUID variant (one of the constants RESERVED_NCS,
RFC_4122, RESERVED_MICROSOFT, or RESERVED_FUTURE)
version the UUID version number (1 through 5, meaningful only
when the variant is RFC_4122)
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d' <d S)4am Create a UUID from either a string of 32 hexadecimal digits,
a string of 16 bytes as the 'bytes' argument, a string of 16 bytes
in little-endian order as the 'bytes_le' argument, a tuple of six
integers (32-bit time_low, 16-bit time_mid, 16-bit time_hi_version,
8-bit clock_seq_hi_variant, 8-bit clock_seq_low, 48-bit node) as
the 'fields' argument, or a single 128-bit integer as the 'int'
argument. When a string of hex digits is given, curly braces,
hyphens, and a URN prefix are all optional. For example, these
expressions all yield the same UUID:
UUID('{12345678-1234-5678-1234-567812345678}')
UUID('12345678123456781234567812345678')
UUID('urn:uuid:12345678-1234-5678-1234-567812345678')
UUID(bytes='\x12\x34\x56\x78'*4)
UUID(bytes_le='\x78\x56\x34\x12\x34\x12\x78\x56' +
'\x12\x34\x56\x78\x12\x34\x56\x78')
UUID(fields=(0x12345678, 0x1234, 0x5678, 0x12, 0x34, 0x567812345678))
UUID(int=0x12345678123456781234567812345678)
Exactly one of 'hex', 'bytes', 'bytes_le', 'fields', or 'int' must
be given. The 'version' argument is optional; if given, the resulting
UUID will have its variant and version set according to RFC 4122,
overriding the given 'hex', 'bytes', 'bytes_le', 'fields', or 'int'.
N� z0need one of hex, bytes, bytes_le, fields, or intzurn:� zuuid:z{}�-� z$badly formed hexadecimal UUID string� z bytes_le is not a 16-char string� � � z bytes is not a 16-char string� byteorderZbigzfields is not a 6-tuple� z*field 1 out of range (need a 32-bit value)z*field 2 out of range (need a 16-bit value)z*field 3 out of range (need a 16-bit value)z*field 4 out of range (need an 8-bit value)z*field 5 out of range (need an 8-bit value)�0 z*field 6 out of range (need a 48-bit value)�` �P �@ � z*int is out of range (need a 128-bit value)� zillegal version numberi � i � i � �L �intl i i � r l l l l���� l l l���� )�count� TypeError�replace�strip�len�
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UUID.__init__c C s# t | t � r | j | j k St S)N)r r r �NotImplemented)r# �otherr0 r0 r1 �__eq__� s z UUID.__eq__c C s# t | t � r | j | j k St S)N)r r r r3 )r# r4 r0 r0 r1 �__ne__� s z UUID.__ne__c C s# t | t � r | j | j k St S)N)r r r r3 )r# r4 r0 r0 r1 �__lt__� s z UUID.__lt__c C s# t | t � r | j | j k St S)N)r r r r3 )r# r4 r0 r0 r1 �__gt__� s z UUID.__gt__c C s# t | t � r | j | j k St S)N)r r r r3 )r# r4 r0 r0 r1 �__le__� s z UUID.__le__c C s# t | t � r | j | j k St S)N)r r r r3 )r# r4 r0 r0 r1 �__ge__� s z UUID.__ge__c C s
t | j � S)N)�hashr )r# r0 r0 r1 �__hash__� s z
UUID.__hash__c C s | j S)N)r )r# r0 r0 r1 �__int__� s z UUID.__int__c C s d t | � S)NzUUID(%r))�str)r# r0 r0 r1 �__repr__� s z
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z UUID.__str__c C sK t � } x5 t d d d � D]! } | j d | j | ?d @� q Wt | � S)Nr r r � )� bytearray�range�insertr r )r# r% Zshiftr0 r0 r1 r% � s z
UUID.bytesc C se | j } t t | d d � � � t t | d d � � � t t | d d � � � | d d � S)Nr r r r )r% r r )r# r% r0 r0 r1 r& � s Mz
UUID.bytes_lec C s( | j | j | j | j | j | j f S)N)r) r* r+ r, r- r. )r# r0 r0 r1 r' � s z UUID.fieldsc C s | j d ?S)Nr
)r )r# r0 r0 r1 r) � s z
UUID.time_lowc C s | j d ?d @S)Nr i�� )r )r# r0 r0 r1 r* s z
UUID.time_midc C s | j d ?d @S)Nr i�� )r )r# r0 r0 r1 r+ s zUUID.time_hi_versionc C s | j d ?d @S)N�8 rF )r )r# r0 r0 r1 r, s zUUID.clock_seq_hi_variantc C s | j d ?d @S)Nr rF )r )r# r0 r0 r1 r- s zUUID.clock_seq_lowc C s! | j d @d >| j d >B| j BS)Ni� r r )r+ r* r) )r# r0 r0 r1 �time s z UUID.timec C s | j d @d >| j BS)N�? r )r, r- )r# r0 r0 r1 r/ s zUUID.clock_seqc C s | j d @S)Nl ��� )r )r# r0 r0 r1 r. s z UUID.nodec C s d | j S)Nz%032x)r )r# r0 r0 r1 r$ ! s zUUID.hexc C s d t | � S)Nz urn:uuid:)r> )r# r0 r0 r1 �urn% s zUUID.urnc C s; | j d @s t S| j d @s" t S| j d @s3 t St Sd S)Ni � r i @ i l l l )r � RESERVED_NCS�RFC_4122�RESERVED_MICROSOFT�RESERVED_FUTURE)r# r0 r0 r1 �variant) s
z UUID.variantc C s( | j t k r$ t | j d ?d @� Sd S)Nr � )rR rO r )r# r0 r0 r1 r( 4 s z UUID.version) �__name__�
__module__� __qualname__�__doc__r2 r5 r6 r7 r8 r9 r: r< r= r? rB rE �propertyr% r& r' r) r* r+ r, r- rK r/ r. r$ rM rR r( r0 r0 r0 r1 r 8 s: . P r c C s� d d l } d d l } | j | � } | d k rm | j j d � } | j | d | �} | d k rm d Sn d | | f } | j | � S)Nr �/sbin� /usr/sbin�pathzLC_ALL=C %s %s 2>/dev/null)rY rZ )�os�shutilZwhich�pathsep�join�popen)�command�argsr\ r] �
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d � d � Sq� WWd QXq� Wd S)z<Get the hardware address on Windows by running ipconfig.exe.r Nr zc:\windows\system32zc:\winnt\system32i, �mbcsZipconfigz /allrf r z&([0-9a-f][0-9a-f]-){5}[0-9a-f][0-9a-f]r r rw )r\ �re�ctypes�create_string_buffer�windllZkernel32ZGetSystemDirectoryArI rA �decoder` r[ r_ rk ri r rg �matchr r ) r\ r� �dirsr� �buffer�dirrl rm rA r0 r0 r1 �_ipconfig_getnode� s&
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be quite slow. If all attempts to obtain the hardware address fail, we
choose a random 48-bit number with its eighth bit set to 1 as recommended
in RFC 4122.
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| f d d � S)a Generate a UUID from a host ID, sequence number, and the current time.
If 'node' is not given, getnode() is used to obtain the hardware
address. If 'clock_seq' is given, it is used as the sequence number;
otherwise a random 14-bit sequence number is chosen.Nr r% r g e��A�d l @'Hw�
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r� c C sO d d l m } | | j t | d � � j � } t d | d d � d d � S) zAGenerate a UUID from the MD5 hash of a namespace UUID and a name.r )�md5zutf-8r% Nr r( r� )�hashlibr� r% �digestr )� namespacer@ r� r; r0 r0 r1 �uuid3N s "r� c s� t r5 t j d � } t | � t d t | j � � Sy, d d l } t d | j d � d d � SWnL d d l � t � f d d � t d � D� � } t d | d d � SYn Xd S) zGenerate a random UUID.r r% r Nr( r c 3 s | ] } � j d � Vq d S)r N)r� )�.0ro )r� r0 r1 � <genexpr>c s zuuid4.<locals>.<genexpr>)
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%r� c C sO d d l m } | | j t | d � � j � } t d | d d � d d � S) zCGenerate a UUID from the SHA-1 hash of a namespace UUID and a name.r )�sha1zutf-8r% Nr r( r )r� r� r% r� r )r� r@ r� r; r0 r0 r1 �uuid5f s "r� z$6ba7b810-9dad-11d1-80b4-00c04fd430c8z$6ba7b811-9dad-11d1-80b4-00c04fd430c8z$6ba7b812-9dad-11d1-80b4-00c04fd430c8z$6ba7b814-9dad-11d1-80b4-00c04fd430c8)8rW �
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