How to use the bitarray.bitarray function in bitarray

To help you get started, we’ve selected a few bitarray examples, based on popular ways it is used in public projects.

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github desbma / sacad / sacad / cover.py View on Github external
See: https://github.com/JohannesBuchner/imagehash/blob/4.0/imagehash/__init__.py#L125

    """
    parser = PIL.ImageFile.Parser()
    parser.feed(image_data)
    img = parser.close()
    target_size = (__class__.IMG_SIG_SIZE, __class__.IMG_SIG_SIZE)
    img.thumbnail(target_size, PIL.Image.BICUBIC)
    if img.size != target_size:
      logging.getLogger("Cover").debug("Non square thumbnail after resize to %ux%u, unable to compute signature" % target_size)
      return None
    img = img.convert(mode="RGB")
    pixels = img.getdata()
    pixel_count = target_size[0] * target_size[1]
    color_count = 3
    r = bitarray.bitarray(pixel_count * color_count)
    r.setall(False)
    for ic in range(color_count):
      mean = sum(p[ic] for p in pixels) // pixel_count
      for ip, p in enumerate(pixels):
        if p[ic] > mean:
          r[pixel_count * ic + ip] = True
    return r
github data61 / clkhash / tests / test_bloomhash.py View on Github external
def generate_bitarray(self, length):
        return bitarray(
            ''.join('1' if random.random() > 0.5 else '0' for _ in range(length))
        )
github mkorz / IntegraPy / src / IntegraPy / framing.py View on Github external
def set_bits_positions(data, offset=1):
    '''
    Returns positions of bits set in a byte array
    '''
    ba = bitarray(endian='little')
    ba.frombytes(bytes(data))

    bits = set(
        idx + 1 for idx, bit in enumerate(ba) if bit
    )
    return bits
github topshed / UnicornHatScroll / UHScroll_defs.py View on Github external
# Special smilie
x0= bitarray('00111100')
x1= bitarray('01000010')
x2= bitarray('10100101')
x3= bitarray('10000001')
x4= bitarray('10100101')
x5= bitarray('10011001')
x6= bitarray('01000010')
x7= bitarray('00111100')
special_smilie=[x0,x1,x2,x3,x4,x5,x6,x7]

# Special degrees
x0= bitarray('00000000')
x1= bitarray('00011100')
x2= bitarray('00010100')
x3= bitarray('00011100')
x4= bitarray('00000000')
x5= bitarray('00000000')
x6= bitarray('00000000')
x7= bitarray('00000000')
special_degrees=[x0,x1,x2,x3,x4,x5,x6,x7]

'''The mapping dictionary is called to translate a character from the message to be displayed
into the relevant bitarray'''

mapping = {}
mapping['A'] = letter_A
mapping['B'] = letter_B
mapping['C'] = letter_C
mapping['D'] = letter_D
mapping['E'] = letter_E
github anzev / hedwig / core.py View on Github external
def get_empty_domain(self):
        '''
        Returns a bitset covering no examples.
        '''
        return bitarray([False] * self.n_examples())
github delfick / photons-core / modules / photons_protocol / types.py View on Github external
def to_bitarray(self, meta, val):
        """Return us the val as a bitarray"""
        if type(val) is bitarray:
            return val

        b = bitarray(endian="little")
        if type(val) is str:
            # We care about when the single quotes aren't here for when we copy output from `lifx unpack` into a `lifx pack`
            # This is because we say something like `lifx pack -- '{"thing": ""}'
            # And the quotes cancel each other out
            if val in (
                "",
                "",
            ):
                val = ""

            try:
                b.frombytes(binascii.unhexlify(val))
            except binascii.Error as error:
                raise BadConversion(
                    "Failed to turn str into bytes", meta=meta, val=val, error=error
                )
github daedalus / fastBloomFilter / fastBloomFilter / bloom.py View on Github external
fn = filename
        else:
            fn = self.filename
        sys.stderr.write("BLOOM: loading filter from file: %s\n" % fn)
        data = self._readfile(fn)
        ld = len(data)
        if ld >0:
            data = self._decompress(data)
            self.header=data[0:10]
            try:
                sys.stderr.write("HEADER: %s\n" % self.header.encode('hex'))
            except:
                sys.stderr.write("HEADER: %s\n" % self.header.hex())

            if self.header[0:6] == b'BLOOM:':
                self.bfilter = bitarray.bitarray(endian='little')
                #self.hashid = self.hashfunc(data[10:])
                self.bfilter.frombytes(data[10:])
                del data
                self.hashid = self.hashfunc(self.bfilter.tobytes())
            else:
                sys.stderr.write("BLOOM: HEADER ERROR, FILTER IS NOT REALIABLE!!!\n")
                #self.bfilter = bytearray()
                self.bfilter = bitarray.bitarray(endian='little')
                #self.hashid = self.hashfunc(data)
                self.bfilter.frombytes(data)
                del data
            self.bitcount = len(self.bfilter)
            self.bitset = 0
        else:
            return False
github netzob / netzob / src / netzob / Simulator / Channels / RawEthernetClient.py View on Github external
# IP header

        ip_ver = Field(
            name='ip.version', domain=BitArray(
                value=bitarray('0100')))  # IP Version 4
        ip_ihl = Field(name='ip.hdr_len', domain=BitArray(bitarray('0000')))
        ip_tos = Field(
            name='ip.tos',
            domain=Data(
                dataType=BitArray(nbBits=8),
                originalValue=bitarray('00000000'),
                svas=SVAS.PERSISTENT))
        ip_tot_len = Field(
            name='ip.len', domain=BitArray(bitarray('0000000000000000')))
        ip_id = Field(name='ip.id', domain=BitArray(nbBits=16))
        ip_flags = Field(name='ip.flags', domain=Data(dataType=BitArray(nbBits=3), originalValue=bitarray('000'), svas=SVAS.PERSISTENT))
        ip_frag_off = Field(name='ip.fragment', domain=Data(dataType=BitArray(nbBits=13), originalValue=bitarray('0000000000000'), svas=SVAS.PERSISTENT))
        ip_ttl = Field(name='ip.ttl', domain=Data(dataType=BitArray(nbBits=8), originalValue=bitarray('01000000'), svas=SVAS.PERSISTENT))
        ip_proto = Field(name='ip.proto', domain=Integer(value=self.upperProtocol, unitSize=AbstractType.UNITSIZE_8, endianness=AbstractType.ENDIAN_BIG, sign=AbstractType.SIGN_UNSIGNED))
        ip_checksum = Field(name='ip.checksum', domain=BitArray(bitarray('0000000000000000')))
        ip_saddr = Field(name='ip.src', domain=IPv4(self.localIP))
        ip_daddr = Field(
            name='ip.dst', domain=IPv4(self.remoteIP))
        ip_payload = Field(name='ip.payload', domain=Raw())

        ip_ihl.domain = Size([ip_ver,
                              ip_ihl,
                              ip_tos,
                              ip_tot_len,
                              ip_id, ip_flags,
                              ip_frag_off,
                              ip_ttl, ip_proto,
github beiko-lab / ananke / ananke / DBloomSCAN.py View on Github external
def load_blooms_from_ananke(timeseriesdata, bloom_garden):
    if "bloomfilters" not in timeseriesdata._h5t:
        raise IndexError("No bloom filters to load.")
    capacity = timeseriesdata._h5t["timeseries/ids"].shape[0]
    bfs = timeseriesdata._h55["bloomfilters"]
    attrs = bfs.attrs
    for bloom_array in attrs:
        new_bloom = ExternalHashBloom(capacity)
        new_bloom.bitarray = bitarray(bloom_array)
        bloom_garden.blooms[bloom] = new_bloom
github topshed / UnicornHatScroll / UHScroll_defs.py View on Github external
# Letter M
x0= bitarray('00000000')
x1= bitarray('01111100')
x2= bitarray('01010100')
x3= bitarray('01010100')
x4= bitarray('01010100')
x5= bitarray('01010100')
x6= bitarray('01010100')
x7= bitarray('00000000')
letter_M=[x0,x1,x2,x3,x4,x5,x6,x7]

# Letter N
x0= bitarray('00000000')
x1= bitarray('00100100')
x2= bitarray('00100100')
x3= bitarray('00110100')
x4= bitarray('00101100')
x5= bitarray('00100100')
x6= bitarray('00100100')
x7= bitarray('00000000')
letter_N=[x0,x1,x2,x3,x4,x5,x6,x7]

# Letter O
x0= bitarray('00000000')
x1= bitarray('00111100')
x2= bitarray('00100100')
x3= bitarray('00100100')
x4= bitarray('00100100')
x5= bitarray('00100100')
x6= bitarray('00111100')
x7= bitarray('00000000')
letter_O=[x0,x1,x2,x3,x4,x5,x6,x7]

bitarray

efficient arrays of booleans -- C extension

Python-2.0
Latest version published 24 days ago

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