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S(% s( UUID objects (universally unique identifiers) according to RFC 4122.
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()
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-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
'\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')
s Ka-Ping Yee <ping@zesty.ca>s reserved for NCS compatibilitys specified in RFC 4122s$ reserved for Microsoft compatibilitys reserved for future definitiont UUIDc B s e Z d Z d d d d d d d Z d Z d Z d Z d Z d Z d Z
d Z e e Z
d Z e e Z d
Z e e Z d Z e e Z d Z e e Z d
Z e e Z d Z e e Z d Z e e Z d Z e e Z d Z e e Z d Z e e Z! d Z" e e" Z# d Z$ e e$ Z% d Z& e e& Z' d Z( e e( Z) RS( s 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 j n p t d& n | d5 M} | d6 O} | d8 M} | | d* >O} n | | i d+ <d, S(9 sm 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'.
i s0 need one of hex, bytes, bytes_le, fields, or ints urn:t s uuid:s {}t -i s$ badly formed hexadecimal UUID stringi s bytes_le is not a 16-char stringi i i i i i i i s bytes is not a 16-char strings %02xs fields is not a 6-tuplel s* field 1 out of range (need a 32-bit value)l s* field 2 out of range (need a 16-bit value)s* field 3 out of range (need a 16-bit value)l s* field 4 out of range (need an 8-bit value)s* field 5 out of range (need an 8-bit value)l 0 s* field 6 out of range (need a 48-bit value)l ` l P l @ l s* int is out of range (need a 128-bit value)s illegal version numberi i i l L t intNl l l l l l l l l l l l ( t countt Nonet TypeErrort replacet stript lent
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get_clock_seq s c C s | i d @S( Nl ( R ( R ( ( s /usr/lib/python2.6/uuid.pyt get_node s c C s d | i S( Ns %032x( R ( R ( ( s /usr/lib/python2.6/uuid.pyt get_hex s c C s d t | S( Ns urn:uuid:( R& ( R ( ( s /usr/lib/python2.6/uuid.pyt get_urn s c C sA | i d @p t S| i d @p t S| i d @p t St Sd S( Ni l 0 i @ i l l l ( R t RESERVED_NCSt RFC_4122t RESERVED_MICROSOFTt RESERVED_FUTURE( R ( ( s /usr/lib/python2.6/uuid.pyt get_variant s c C s* | i t j o t | i d ?d @ Sd S( Nl L i ( t variantR= R ( R ( ( s /usr/lib/python2.6/uuid.pyt get_version s N(* t __name__t
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executablet cmdt pipet linet wordst i( ( s /usr/lib/python2.6/uuid.pyt _find_mac& s& 0c C s x8 d D]0 } t d | d d g d } | o | Sq Wd d k } | i | i } t d
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d d g d } | o | Sd S( s5 Get the hardware address on Unix by running ifconfig.R s -as -avt ifconfigt hwaddrt etherc S s | d S( i ( ( R\ ( ( s /usr/lib/python2.6/uuid.pyt <lambda>A s iNt arps -anc S s d S( i( ( R\ ( ( s /usr/lib/python2.6/uuid.pyRa I s t lanscans -ait lan0c S s d S( i ( ( R\ ( ( s /usr/lib/python2.6/uuid.pyRa N s ( R s -as -av( R] t sockett
gethostbynamet gethostnameR ( RS t macRe t ip_addr( ( s /usr/lib/python2.6/uuid.pyt _ifconfig_getnode< s c C s3 d d k } d d k } d d d g } yQ d d k } | i d } | i i i | d | i d | i i d Wn n Xx | D] } y& | i
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See http://support.microsoft.com/kb/118623 for details.iNi t *i l ( i l i l i l i l i ( t win32wnett netbiost NCBt NCBENUMt Commandt LANA_ENUMt Buffert _packt Netbiost _unpackR, t lengtht Resett NCBRESETR t lanat Lana_numt NCBASTATt ljustt Callnamet ADAPTER_STATUSR
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UuidCreatec C s, t i d } t | t d | i i S( s. Get the hardware address on Unix using ctypes.i R ( Rn Ro t _uuid_generate_timeR t rawR ( t _buffer( ( s /usr/lib/python2.6/uuid.pyt _unixdll_getnode s
c C s: t i d } t | d j o t d | i i Sd S( s1 Get the hardware address on Windows using ctypes.i i R N( Rn Ro t _UuidCreateR R R ( R ( ( s /usr/lib/python2.6/uuid.pyt _windll_getnode s c C s d d k } | i d d d BS( sC Get a random node ID, with eighth bit set as suggested by RFC 4122.iNi i l 0 l l ( t randomt randrange( R ( ( s /usr/lib/python2.6/uuid.pyt _random_getnode s c C s t d j o t Sd d k } | i d j o t t t g } n
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The first time this runs, it may launch a separate program, which could
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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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.i R iNg eAid l @'Hw
i l l l l l 0 l l l l ? R R l @( R R Rn Ro R R RG R t _last_timestampR R R ( R R R RG t nanosecondst timestampR R R R R R ( ( s /usr/lib/python2.6/uuid.pyt uuid1 s, %
c C s@ d d k l } | | i | i } t d | d d d S( sA Generate a UUID from the MD5 hash of a namespace UUID and a name.i( t md5R i R i ( t hashlibR R t digestR ( t namespaceR( R R# ( ( s /usr/lib/python2.6/uuid.pyt uuid3
s c C s t o* t i d } t | t d | i Sy, d d k } t d | i d d d SWnY d d k } g } t d D] } | t | i
d q ~ } t d | d d SXd S( s Generate a random UUID.i R iNR i i ( t _uuid_generate_randomRn Ro R R RJ t urandomR R, R- R ( R RJ R t _[1]R\ R ( ( s /usr/lib/python2.6/uuid.pyt uuid4 s
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