diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/uuid.py | 33 |
1 files changed, 12 insertions, 21 deletions
diff --git a/Lib/uuid.py b/Lib/uuid.py index a43bffa4c5a..fb56a997a3b 100644 --- a/Lib/uuid.py +++ b/Lib/uuid.py @@ -139,10 +139,8 @@ class UUID(object): if bytes_le is not None: if len(bytes_le) != 16: raise ValueError('bytes_le is not a 16-char string') - bytes = (bytes_(reversed(bytes_le[0:4])) + - bytes_(reversed(bytes_le[4:6])) + - bytes_(reversed(bytes_le[6:8])) + - bytes_le[8:]) + bytes = (bytes_le[4-1::-1] + bytes_le[6-1:4-1:-1] + + bytes_le[8-1:6-1:-1] + bytes_le[8:]) if bytes is not None: if len(bytes) != 16: raise ValueError('bytes is not a 16-char string') @@ -234,17 +232,12 @@ class UUID(object): @property def bytes(self): - bytes = bytearray() - for shift in range(0, 128, 8): - bytes.insert(0, (self.int >> shift) & 0xff) - return bytes_(bytes) + return self.int.to_bytes(16, 'big') @property def bytes_le(self): bytes = self.bytes - return (bytes_(reversed(bytes[0:4])) + - bytes_(reversed(bytes[4:6])) + - bytes_(reversed(bytes[6:8])) + + return (bytes[4-1::-1] + bytes[6-1:4-1:-1] + bytes[8-1:6-1:-1] + bytes[8:]) @property @@ -383,13 +376,11 @@ def _ipconfig_getnode(): pipe = os.popen(os.path.join(dir, 'ipconfig') + ' /all') except OSError: continue - else: + with pipe: for line in pipe: value = line.split(':')[-1].strip().lower() if re.match('([0-9a-f][0-9a-f]-){5}[0-9a-f][0-9a-f]', value): return int(value.replace('-', ''), 16) - finally: - pipe.close() def _netbios_getnode(): """Get the hardware address on Windows using NetBIOS calls. @@ -416,9 +407,10 @@ def _netbios_getnode(): if win32wnet.Netbios(ncb) != 0: continue status._unpack() - bytes = status.adapter_address - return ((bytes[0]<<40) + (bytes[1]<<32) + (bytes[2]<<24) + - (bytes[3]<<16) + (bytes[4]<<8) + bytes[5]) + bytes = status.adapter_address[:6] + if len(bytes) != 6: + continue + return int.from_bytes(bytes, 'big') # Thanks to Thomas Heller for ctypes and for his help with its use here. @@ -487,7 +479,7 @@ def _windll_getnode(): def _random_getnode(): """Get a random node ID, with eighth bit set as suggested by RFC 4122.""" import random - return random.randrange(0, 1<<48) | 0x010000000000 + return random.getrandbits(48) | 0x010000000000 _node = None @@ -544,7 +536,7 @@ def uuid1(node=None, clock_seq=None): _last_timestamp = timestamp if clock_seq is None: import random - clock_seq = random.randrange(1<<14) # instead of stable storage + clock_seq = random.getrandbits(14) # instead of stable storage time_low = timestamp & 0xffffffff time_mid = (timestamp >> 32) & 0xffff time_hi_version = (timestamp >> 48) & 0x0fff @@ -576,8 +568,7 @@ def uuid4(): return UUID(bytes=os.urandom(16), version=4) except: import random - bytes = bytes_(random.randrange(256) for i in range(16)) - return UUID(bytes=bytes, version=4) + return UUID(int=random.getrandbits(128), version=4) def uuid5(namespace, name): """Generate a UUID from the SHA-1 hash of a namespace UUID and a name.""" |