Python random.getrandbits方法代码示例

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def _py_func_with_gradient(func, inp, Tout, stateful=True, name=None,
                           grad_func=None):
    """
    PyFunc defined as given by Tensorflow
    :param func: Custom Function
    :param inp: Function Inputs
    :param Tout: Ouput Type of out Custom Function
    :param stateful: Calculate Gradients when stateful is True
    :param name: Name of the PyFunction
    :param grad: Custom Gradient Function
    :return:
    """
    # Generate random name in order to avoid conflicts with inbuilt names
    rnd_name = 'PyFuncGrad-' + '%0x' % getrandbits(30 * 4)

    # Register Tensorflow Gradient
    tf.RegisterGradient(rnd_name)(grad_func)

    # Get current graph
    g = tf.get_default_graph()

    # Add gradient override map
    with g.gradient_override_map(
            {"PyFunc": rnd_name, "PyFuncStateless": rnd_name}):
        return tf.py_func(func, inp, Tout, stateful=stateful, name=name) 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def exact_single_frame(self, length):
        """
        Simplest test possible. Create a packet, then parse a buffer containing this packet. Size of buffer is exactly
        one packet (no excess).
        :param length: Number of bytes in payload.
        """
        import random
        import pyvesc.protocol.packet.codec as vesc_packet
        correct_payload_index = None
        if length < 256:
            correct_payload_index = 2
        else:
            correct_payload_index = 3
        test_payload = bytes(random.getrandbits(8) for i in range(length))
        # test framing
        packet = vesc_packet.frame(test_payload)
        self.assertEqual(len(packet), correct_payload_index + length + 3, "size of packet")
        buffer = bytearray(packet)
        # test Parser
        parsed, consumed = vesc_packet.unframe(buffer)
        buffer = buffer[consumed:]
        self.assertEqual(parsed, test_payload)
        self.assertEqual(len(buffer), 0) 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def _symlinks_supported(self) -> bool:
        log.debug("Checking if is filesystem supports symbolic links...")
        dst = "test_dst_%s" % random.getrandbits(32)
        src = "test_src_%s" % random.getrandbits(32)
        dst_file = self.root_path / dst
        src_file = self.root_path / src
        src_file.touch()
        try:
            log.debug("attempting to symlink %s to %s", src_file, dst_file)
            dst_file.symlink_to(src_file)
            dst_file.unlink()
            src_file.unlink()
        except BaseException:
            if src_file.exists():
                src_file.unlink()
            log.error("Symbolic links not supported")
            log.error("Albums are not going to be synced - requires symlinks")
            return False
        return True 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def filter_input(text: str):

        if text is None:
            return None

        filtered = text

        urls = re.findall(r'http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*(),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+',
                          text)

        # Replace all URLS with a unique token
        url_token = 'URL%s' % random.getrandbits(64)
        for url in urls:
            filtered = filtered.replace(url, url_token)

        filtered = re.sub(r'(&)', '', filtered)
        filtered = re.sub(r'[,:;\'`\-_“^"<>(){}/\\*]', '', filtered)

        # Swamp URLs back for token
        for url in urls:
            filtered = filtered.replace(url_token, url)

        return filtered 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def __init__(self, graph, rep_size=128, batch_size=1000, negative_ratio=5, order=3):
        self.cur_epoch = 0
        self.order = order
        self.g = graph
        self.node_size = graph.G.number_of_nodes()
        self.rep_size = rep_size
        self.batch_size = batch_size
        self.negative_ratio = negative_ratio

        self.gen_sampling_table()
        self.sess = tf.Session()
        cur_seed = random.getrandbits(32)
        initializer = tf.contrib.layers.xavier_initializer(
            uniform=False, seed=cur_seed)
        with tf.variable_scope("model", reuse=None, initializer=initializer):
            self.build_graph()
        self.sess.run(tf.global_variables_initializer()) 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def _get_descending_key(gettime=time.time):
  """Returns a key name lexically ordered by time descending.

  This lets us have a key name for use with Datastore entities which returns
  rows in time descending order when it is scanned in lexically ascending order,
  allowing us to bypass index building for descending indexes.

  Args:
    gettime: Used for testing.

  Returns:
    A string with a time descending key.
  """
  now_descending = int((_FUTURE_TIME - gettime()) * 100)
  request_id_hash = os.environ.get("REQUEST_ID_HASH")
  if not request_id_hash:
    request_id_hash = str(random.getrandbits(32))
  return "%d%s" % (now_descending, request_id_hash) 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def __init__(self, *args, **kwds):
        ## Create shared memory for rendered image
        #pg.dbg(namespace={'r': self})
        if sys.platform.startswith('win'):
            self.shmtag = "pyqtgraph_shmem_" + ''.join([chr((random.getrandbits(20)%25) + 97) for i in range(20)])
            self.shm = mmap.mmap(-1, mmap.PAGESIZE, self.shmtag) # use anonymous mmap on windows
        else:
            self.shmFile = tempfile.NamedTemporaryFile(prefix='pyqtgraph_shmem_')
            self.shmFile.write(b'\x00' * (mmap.PAGESIZE+1))
            fd = self.shmFile.fileno()
            self.shm = mmap.mmap(fd, mmap.PAGESIZE, mmap.MAP_SHARED, mmap.PROT_WRITE)
        atexit.register(self.close)
        
        GraphicsView.__init__(self, *args, **kwds)
        self.scene().changed.connect(self.update)
        self.img = None
        self.renderTimer = QtCore.QTimer()
        self.renderTimer.timeout.connect(self.renderView)
        self.renderTimer.start(16) 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def _random_bytes(length):
    if random.choice((0, 1)):
        b = bytes(random.getrandbits(8)
                  for _ in range(int(length)))
    else:
        # We use b'\x00' as a placeholder for padding when faking missing files
        # during verification, so we increase the probability of b'\x00' at the
        # beginning and/or end
        if random.choice((0, 1)):
            beg = b'\x00' * random.randint(0, int(length / 2))
        else:
            beg = b''
        if random.choice((0, 1)):
            end = b'\x00' * random.randint(0, int(length / 2))
        else:
            end = b''
        b = beg + bytes(random.getrandbits(8)
                        for _ in range(int(length - len(beg) - len(end)))) + end
    assert len(b) == length
    return b 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def make_msgid(idstring=None):
    """Returns a string suitable for RFC 2822 compliant Message-ID, e.g:

    <142480216486.20800.16526388040877946887@nightshade.la.mastaler.com>

    Optional idstring if given is a string used to strengthen the
    uniqueness of the message id.
    """
    timeval = int(time.time()*100)
    pid = os.getpid()
    randint = random.getrandbits(64)
    if idstring is None:
        idstring = ''
    else:
        idstring = '.' + idstring
    idhost = socket.getfqdn()
    msgid = '<%d.%d.%d%s@%s>' % (timeval, pid, randint, idstring, idhost)
    return msgid



# These functions are in the standalone mimelib version only because they've
# subsequently been fixed in the latest Python versions.  We use this to worm
# around broken older Pythons. 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def __init__(self):
        self.board = [int(7 * random.getrandbits(1)) for _ in xrange(size)]
        self.color = [[154, 154, 174], [0, 0, 255], [0, 0, 200], [0, 0, 160], [0, 0, 140], [0, 0, 90], [0, 0, 60], [0, 0, 0]] 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def __init__(self, args):
        if "-r" in args:
            self.synth_mode = self.SYNTH_MODE_RANDOM
        elif "-b" in args:
            self.synth_mode = self.SYNTH_MODE_BRUTE
        elif "-t" in args:
            self.synth_mode = self.SYNTH_MODE_TUNNEL
        self.args = args
        self.root = (os.geteuid() == 0)
        self.seed = random.getrandbits(32) 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def gen_random_bits(self, width):                      
        '''
        You can generate a bitvector with random bits with the bits
        spanning a specified width.  For example, if you wanted a random
        bit vector to fully span 32 bits, you would say

            bv = BitVector(intVal = 0)
            bv = bv.gen_random_bits(32)  
            print(bv)                # 11011010001111011010011111000101

        As you would expect, gen_random_bits() returns a bitvector object.

        The bulk of the work here is done by calling random.getrandbits(
        width) which returns an integer whose binary code representation
        will NOT BE LARGER than the argument 'width'.  When random numbers
        are generated as candidates for primes, you often want to make sure
        that the random number thus created spans the full width specified
        by 'width' and that the number is odd.  This we do by setting the
        two most significant bits and the least significant bit.
        '''
        import random                                              
        candidate = random.getrandbits( width )                    
        candidate |= 1                                             
        candidate |= (1 << width-1)                                
        candidate |= (2 << width-3)                                
        return BitVector( intVal = candidate )                     

    # For backward compatibility: 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def generateToken(bits=128):
    return "{:x}".format(random.getrandbits(bits)) 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def exact_two_frames(self, length1, length2):
        """
        Check that if there is more than one packet in a buffer, that the unpacker will properly unpack the packets.
        Size of buffer for this test is exactly two packets.
        :param length1: Length of first payload
        :param length2: Length of second payload
        """
        import random
        import pyvesc.protocol.packet.codec as vesc_packet
        correct_payload_index1 = None
        correct_payload_index2 = None
        if length1 < 256:
            correct_payload_index1 = 2
        else:
            correct_payload_index1 = 3
        if length2 < 256:
            correct_payload_index2 = 2
        else:
            correct_payload_index2 = 3
        test_payload1 = bytes(random.getrandbits(8) for i in range(length1))
        test_payload2 = bytes(random.getrandbits(8) for i in range(length2))
        # test framing
        packet1 = vesc_packet.frame(test_payload1)
        packet2 = vesc_packet.frame(test_payload2)
        self.assertEqual(len(packet1), correct_payload_index1 + length1 + 3, "size of packet")
        self.assertEqual(len(packet2), correct_payload_index2 + length2 + 3, "size of packet")
        buffer = bytearray(packet1 + packet2)
        # test Parser
        parsed, consumed = vesc_packet.unframe(buffer)
        buffer = buffer[consumed:]
        self.assertEqual(parsed, test_payload1)
        self.assertEqual(len(buffer), len(packet2))
        parsed, consumed = vesc_packet.unframe(buffer)
        buffer = buffer[consumed:]
        self.assertEqual(parsed, test_payload2)
        self.assertEqual(len(buffer), 0) 

# 需要导入模块: import random [as 别名]
# 或者: from random import getrandbits [as 别名]
def parse_buffer(self, length):
        import random
        import pyvesc.protocol.packet.codec as vesc_packet
        correct_payload_index = None
        if length < 256:
            correct_payload_index = 2
        else:
            correct_payload_index = 3
        test_payload = bytes(random.getrandbits(8) for i in range(length))
        packet = vesc_packet.frame(test_payload)

        # test on small buffers
        for n in range(0, 5):
            in_buffer = bytearray(packet[:n])
            parsed, consumed = vesc_packet.unframe(in_buffer)
            out_buffer = in_buffer[consumed:]
            self.assertEqual(parsed, None)
            self.assertEqual(in_buffer, out_buffer)
        # test on buffer almost big enough
        for n in range(len(packet) - 4, len(packet)):
            in_buffer = bytearray(packet[:n])
            parsed, consumed = vesc_packet.unframe(in_buffer)
            out_buffer = in_buffer[consumed:]
            self.assertEqual(parsed, None)
            self.assertEqual(in_buffer, out_buffer)
        # test on buffer slightly too big
        extension = b'\x02\x04\x07'
        extended_packet = packet + b'\x02\x04\x07'
        for n in range(len(packet) + 1, len(packet) + 4):
            in_buffer = bytearray(extended_packet[:n])
            parsed, consumed = vesc_packet.unframe(in_buffer)
            out_buffer = in_buffer[consumed:]
            self.assertEqual(parsed, test_payload)
            self.assertEqual(out_buffer, extension[:n - len(packet)])