Python base64.decodebytes() Examples

def generate_book_cover(self):
        cover = None

        try:
            cover_image_xml = self.xml.find('coverpage')
            for i in cover_image_xml:
                cover_image_name = i.get('l:href')

            cover_image_data = self.xml.find_all('binary')
            for i in cover_image_data:
                if cover_image_name.endswith(i.get('id')):
                    cover = base64.decodebytes(i.text.encode())
        except (AttributeError, TypeError):
            # Catch TypeError in case no images exist in the book
            logger.warning('Cover not found: ' + self.filename)

        return cover 

def convert_gif_2_jpg(gif_base64):
        bas = base64.decodebytes(bytes(gif_base64, "utf-8"))
        im = Image.open(BytesIO(bas))
        i = 0
        mypalette = im.getpalette()
        base64_jpgs = []
        try:
            while 1:
                im.putpalette(mypalette)
                new_im = Image.new("RGB", im.size)
                new_im.paste(im)
                buffered = BytesIO()
                new_im.save(buffered, format="JPEG")
                img_data_base64 = base64.b64encode(buffered.getvalue())
                base64_jpgs.append(img_data_base64)
                i += 1
                im.seek(im.tell() + 1)

        except EOFError:
            pass

        return base64_jpgs 

def ocr_rest():
    """
    :return:
    """

    img = base64.decodebytes(request.form.get('img').encode())
    img = np.frombuffer(img, dtype=np.uint8)
    h, w = request.form.getlist('shape', type=int)
    img = img.reshape((h, w))
    # 预处理
    img = pre_process_image(img, h, w)
    # 预测
    text = inference(img, h, w)
    text = ''.join(text)
    print("text:{}".format(text))
    return {'text': text} 

def png_to_file(self, filename):
    """
    Write the png to a file for viewing.
    :param filename: str(): a name to give the saved file
    :return: a saved filename.png in the img folder for viewing.
    """
    path = Path().cwd()
    data_folder = path / u'img'
    filepath = data_folder / filename

    if self.png:
        png_data = self.png.encode('utf-8')
        with open(str(filepath), 'wb') as fh:
            fh.write(base64.decodebytes(png_data))
            print(f'Saved to {filepath}')
    print(f'self.png is None')
    return None 

def _save_file(self, path, content, format):
        """Save content of a generic file."""
        if format not in {'text', 'base64'}:
            raise web.HTTPError(
                400,
                "Must specify format of file contents as 'text' or 'base64'",
            )
        try:
            if format == 'text':
                bcontent = content.encode('utf8')
            else:
                b64_bytes = content.encode('ascii')
                bcontent = decodebytes(b64_bytes)
        except Exception as e:
            raise web.HTTPError(
                400, u'Encoding error saving %s: %s' % (path, e)
            )

        if format == 'text':
            self._pyfilesystem_instance.writebytes(path, bcontent)
        else:
            self._pyfilesystem_instance.writebytes(path, bcontent) 

def test_decodebytes(self):
        eq = self.assertEqual
        eq(base64.decodebytes(b"d3d3LnB5dGhvbi5vcmc=\n"), b"www.python.org")
        eq(base64.decodebytes(b"YQ==\n"), b"a")
        eq(base64.decodebytes(b"YWI=\n"), b"ab")
        eq(base64.decodebytes(b"YWJj\n"), b"abc")
        eq(base64.decodebytes(b"YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNE"
                               b"RUZHSElKS0xNTk9QUVJTVFVWV1hZWjAxMjM0\nNT"
                               b"Y3ODkhQCMwXiYqKCk7Ojw+LC4gW117fQ==\n"),
           b"abcdefghijklmnopqrstuvwxyz"
           b"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
           b"0123456789!@#0^&*();:<>,. []{}")
        eq(base64.decodebytes(b''), b'')
        # Non-bytes
        eq(base64.decodebytes(bytearray(b'YWJj\n')), b'abc')
        eq(base64.decodebytes(memoryview(b'YWJj\n')), b'abc')
        eq(base64.decodebytes(array('B', b'YWJj\n')), b'abc')
        self.check_type_errors(base64.decodebytes) 

def setUp(self):
        if not os.path.isdir(LOCALEDIR):
            os.makedirs(LOCALEDIR)
        with open(MOFILE, 'wb') as fp:
            fp.write(base64.decodebytes(GNU_MO_DATA))
        with open(MOFILE_BAD_MAJOR_VERSION, 'wb') as fp:
            fp.write(base64.decodebytes(GNU_MO_DATA_BAD_MAJOR_VERSION))
        with open(MOFILE_BAD_MINOR_VERSION, 'wb') as fp:
            fp.write(base64.decodebytes(GNU_MO_DATA_BAD_MINOR_VERSION))
        with open(UMOFILE, 'wb') as fp:
            fp.write(base64.decodebytes(UMO_DATA))
        with open(MMOFILE, 'wb') as fp:
            fp.write(base64.decodebytes(MMO_DATA))
        self.env = support.EnvironmentVarGuard()
        self.env['LANGUAGE'] = 'xx'
        gettext._translations.clear() 

def open_data(self, url, data=None):
        """Use "data" URL."""
        if not isinstance(url, str):
            raise URLError('data error: proxy support for data protocol currently not implemented')
        # ignore POSTed data
        #
        # syntax of data URLs:
        # dataurl   := "data:" [ mediatype ] [ ";base64" ] "," data
        # mediatype := [ type "/" subtype ] *( ";" parameter )
        # data      := *urlchar
        # parameter := attribute "=" value
        try:
            [type, data] = url.split(',', 1)
        except ValueError:
            raise IOError('data error', 'bad data URL')
        if not type:
            type = 'text/plain;charset=US-ASCII'
        semi = type.rfind(';')
        if semi >= 0 and '=' not in type[semi:]:
            encoding = type[semi+1:]
            type = type[:semi]
        else:
            encoding = ''
        msg = []
        msg.append('Date: %s'%time.strftime('%a, %d %b %Y %H:%M:%S GMT',
                                            time.gmtime(time.time())))
        msg.append('Content-type: %s' % type)
        if encoding == 'base64':
            # XXX is this encoding/decoding ok?
            data = base64.decodebytes(data.encode('ascii')).decode('latin-1')
        else:
            data = unquote(data)
        msg.append('Content-Length: %d' % len(data))
        msg.append('')
        msg.append(data)
        msg = '\n'.join(msg)
        headers = email.message_from_string(msg)
        f = io.StringIO(msg)
        #f.fileno = None     # needed for addinfourl
        return addinfourl(f, headers, url) 

def open_data(self, url, data=None):
        """Use "data" URL."""
        if not isinstance(url, str):
            raise URLError('data error: proxy support for data protocol currently not implemented')
        # ignore POSTed data
        #
        # syntax of data URLs:
        # dataurl   := "data:" [ mediatype ] [ ";base64" ] "," data
        # mediatype := [ type "/" subtype ] *( ";" parameter )
        # data      := *urlchar
        # parameter := attribute "=" value
        try:
            [type, data] = url.split(',', 1)
        except ValueError:
            raise IOError('data error', 'bad data URL')
        if not type:
            type = 'text/plain;charset=US-ASCII'
        semi = type.rfind(';')
        if semi >= 0 and '=' not in type[semi:]:
            encoding = type[semi+1:]
            type = type[:semi]
        else:
            encoding = ''
        msg = []
        msg.append('Date: %s'%time.strftime('%a, %d %b %Y %H:%M:%S GMT',
                                            time.gmtime(time.time())))
        msg.append('Content-type: %s' % type)
        if encoding == 'base64':
            # XXX is this encoding/decoding ok?
            data = base64.decodebytes(data.encode('ascii')).decode('latin-1')
        else:
            data = unquote(data)
        msg.append('Content-Length: %d' % len(data))
        msg.append('')
        msg.append(data)
        msg = '\n'.join(msg)
        headers = email.message_from_string(msg)
        f = io.StringIO(msg)
        #f.fileno = None     # needed for addinfourl
        return addinfourl(f, headers, url) 

def on_request_attestation(self, peer, dist, payload):
        """
        Someone wants us to attest their attribute.
        """
        metadata = json.loads(payload.metadata)
        attribute = metadata.pop('attribute')
        pubkey_b64 = cast_to_bin(metadata.pop('public_key'))
        id_format = metadata.pop('id_format')
        id_algorithm = self.get_id_algorithm(id_format)

        value = await maybe_coroutine(self.attestation_request_callback, peer, attribute, metadata)
        if value is None:
            return

        PK = id_algorithm.load_public_key(decodebytes(pubkey_b64))
        attestation_blob = id_algorithm.attest(PK, value)
        attestation = id_algorithm.get_attestation_class().unserialize(attestation_blob, id_format)

        self.attestation_request_complete_callback(peer, attribute, attestation.get_hash(), id_format)

        self.send_attestation(peer.address, attestation_blob, dist.global_time) 

def _write_file(self, byte_data: str, subtitle_path: str):
        """
        Encode the byte_data string to bytes (since it's not in byte format by default) and write it to a .gzip
        file. Unzip the content of the .gzip file and write it outside (unzipped).

        :param byte_data: (string) string containing bytecode information
                                        ATTENTION: variable is not byte encoded, which is why it is done in this method
        :param subtitle_path: (string) absolute path where to write the subtitle
        """
        with open(subtitle_path, "wb") as subtitle_file:
            subtitle_file.write(base64.decodebytes(byte_data.encode()))

        # Open and read the compressed file and write it outside
        with gzip.open(subtitle_path, 'rb') as gzip_file:
            content = gzip_file.read()
            # Removes the ".gzip" extension
            with open(subtitle_path[:-4], 'wb') as srt_file:
                srt_file.write(content)

        self.downloaded_files += 1
        # Remove the .gzip file
        os.remove(subtitle_path) 

def open_data(self, url, data=None):
        """Use "data" URL."""
        if not isinstance(url, str):
            raise URLError('data error: proxy support for data protocol currently not implemented')
        # ignore POSTed data
        #
        # syntax of data URLs:
        # dataurl   := "data:" [ mediatype ] [ ";base64" ] "," data
        # mediatype := [ type "/" subtype ] *( ";" parameter )
        # data      := *urlchar
        # parameter := attribute "=" value
        try:
            [type, data] = url.split(',', 1)
        except ValueError:
            raise IOError('data error', 'bad data URL')
        if not type:
            type = 'text/plain;charset=US-ASCII'
        semi = type.rfind(';')
        if semi >= 0 and '=' not in type[semi:]:
            encoding = type[semi+1:]
            type = type[:semi]
        else:
            encoding = ''
        msg = []
        msg.append('Date: %s'%time.strftime('%a, %d %b %Y %H:%M:%S GMT',
                                            time.gmtime(time.time())))
        msg.append('Content-type: %s' % type)
        if encoding == 'base64':
            # XXX is this encoding/decoding ok?
            data = base64.decodebytes(data.encode('ascii')).decode('latin-1')
        else:
            data = unquote(data)
        msg.append('Content-Length: %d' % len(data))
        msg.append('')
        msg.append(data)
        msg = '\n'.join(msg)
        headers = email.message_from_string(msg)
        f = io.StringIO(msg)
        #f.fileno = None     # needed for addinfourl
        return addinfourl(f, headers, url) 

def test_start_with_moveto():
    # Should be entirely clipped away to a single MOVETO
    data = b"""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"""

    verts = np.fromstring(base64.decodebytes(data), dtype='<i4')
    verts = verts.reshape((len(verts) // 2, 2))
    path = Path(verts)
    segs = path.iter_segments(transforms.IdentityTransform(),
                              clip=(0.0, 0.0, 100.0, 100.0))
    segs = list(segs)
    assert len(segs) == 1
    assert segs[0][1] == Path.MOVETO 

def open_data(self, url, data=None):
        """Use "data" URL."""
        if not isinstance(url, str):
            raise URLError('data error: proxy support for data protocol currently not implemented')
        # ignore POSTed data
        #
        # syntax of data URLs:
        # dataurl   := "data:" [ mediatype ] [ ";base64" ] "," data
        # mediatype := [ type "/" subtype ] *( ";" parameter )
        # data      := *urlchar
        # parameter := attribute "=" value
        try:
            [type, data] = url.split(',', 1)
        except ValueError:
            raise IOError('data error', 'bad data URL')
        if not type:
            type = 'text/plain;charset=US-ASCII'
        semi = type.rfind(';')
        if semi >= 0 and '=' not in type[semi:]:
            encoding = type[semi+1:]
            type = type[:semi]
        else:
            encoding = ''
        msg = []
        msg.append('Date: %s'%time.strftime('%a, %d %b %Y %H:%M:%S GMT',
                                            time.gmtime(time.time())))
        msg.append('Content-type: %s' % type)
        if encoding == 'base64':
            # XXX is this encoding/decoding ok?
            data = base64.decodebytes(data.encode('ascii')).decode('latin-1')
        else:
            data = unquote(data)
        msg.append('Content-Length: %d' % len(data))
        msg.append('')
        msg.append(data)
        msg = '\n'.join(msg)
        headers = email.message_from_string(msg)
        f = io.StringIO(msg)
        #f.fileno = None     # needed for addinfourl
        return addinfourl(f, headers, url) 

def construct_python_bytes(self, node):
        try:
            value = self.construct_scalar(node).encode('ascii')
        except UnicodeEncodeError as exc:
            raise ConstructorError(None, None,
                    "failed to convert base64 data into ascii: %s" % exc,
                    node.start_mark)
        try:
            if hasattr(base64, 'decodebytes'):
                return base64.decodebytes(value)
            else:
                return base64.decodestring(value)
        except binascii.Error as exc:
            raise ConstructorError(None, None,
                    "failed to decode base64 data: %s" % exc, node.start_mark) 

def base64_decode(input, errors='strict'):
    assert errors == 'strict'
    return (base64.decodebytes(input), len(input)) 

def auth(self, mechanism, authobject, *, initial_response_ok=True):
        """Authentication command - requires response processing.

        'mechanism' specifies which authentication mechanism is to
        be used - the valid values are those listed in the 'auth'
        element of 'esmtp_features'.

        'authobject' must be a callable object taking a single argument:

                data = authobject(challenge)

        It will be called to process the server's challenge response; the
        challenge argument it is passed will be a bytes.  It should return
        an ASCII string that will be base64 encoded and sent to the server.

        Keyword arguments:
            - initial_response_ok: Allow sending the RFC 4954 initial-response
              to the AUTH command, if the authentication methods supports it.
        """
        # RFC 4954 allows auth methods to provide an initial response.  Not all
        # methods support it.  By definition, if they return something other
        # than None when challenge is None, then they do.  See issue #15014.
        mechanism = mechanism.upper()
        initial_response = (authobject() if initial_response_ok else None)
        if initial_response is not None:
            response = encode_base64(initial_response.encode('ascii'), eol='')
            (code, resp) = self.docmd("AUTH", mechanism + " " + response)
        else:
            (code, resp) = self.docmd("AUTH", mechanism)
        # If server responds with a challenge, send the response.
        if code == 334:
            challenge = base64.decodebytes(resp)
            response = encode_base64(
                authobject(challenge).encode('ascii'), eol='')
            (code, resp) = self.docmd(response)
        if code in (235, 503):
            return (code, resp)
        raise SMTPAuthenticationError(code, resp) 

def decode(self, input, final=False):
        assert self.errors == 'strict'
        return base64.decodebytes(input) 

def construct_yaml_binary(self, node):
        try:
            value = self.construct_scalar(node).encode('ascii')
        except UnicodeEncodeError as exc:
            raise ConstructorError(None, None,
                    "failed to convert base64 data into ascii: %s" % exc,
                    node.start_mark)
        try:
            if hasattr(base64, 'decodebytes'):
                return base64.decodebytes(value)
            else:
                return base64.decodestring(value)
        except binascii.Error as exc:
            raise ConstructorError(None, None,
                    "failed to decode base64 data: %s" % exc, node.start_mark) 

def decode(self, data):
        self.data = base64.decodebytes(data) 

def decode(self, input, final=False):
        assert self.errors == 'strict'
        return base64.decodebytes(input) 

def base64_decode(input, errors='strict'):
    assert errors == 'strict'
    return (base64.decodebytes(input), len(input)) 

def base64_decode(input, errors='strict'):
    assert errors == 'strict'
    return (base64.decodebytes(input), len(input)) 

def getparser(use_datetime=False, use_builtin_types=False):
    """getparser() -> parser, unmarshaller

    Create an instance of the fastest available parser, and attach it
    to an unmarshalling object.  Return both objects.
    """
    if FastParser and FastUnmarshaller:
        if use_builtin_types:
            mkdatetime = _datetime_type
            mkbytes = base64.decodebytes
        elif use_datetime:
            mkdatetime = _datetime_type
            mkbytes = _binary
        else:
            mkdatetime = _datetime
            mkbytes = _binary
        target = FastUnmarshaller(True, False, mkbytes, mkdatetime, Fault)
        parser = FastParser(target)
    else:
        target = Unmarshaller(use_datetime=use_datetime, use_builtin_types=use_builtin_types)
        if FastParser:
            parser = FastParser(target)
        else:
            parser = ExpatParser(target)
    return parser, target

##
# Convert a Python tuple or a Fault instance to an XML-RPC packet.
#
# @def dumps(params, **options)
# @param params A tuple or Fault instance.
# @keyparam methodname If given, create a methodCall request for
#     this method name.
# @keyparam methodresponse If given, create a methodResponse packet.
#     If used with a tuple, the tuple must be a singleton (that is,
#     it must contain exactly one element).
# @keyparam encoding The packet encoding.
# @return A string containing marshalled data. 

def decode(self, data):
        self.data = base64.decodebytes(data) 

def _verify(self, raw_content, signature):
        # 开始计算签名
        key = self.alipay_public_key
        signer = PKCS1_v1_5.new(key)
        digest = SHA256.new()
        digest.update(raw_content.encode("utf8"))
        if signer.verify(digest, decodebytes(signature.encode("utf8"))):
            return True
        return False 

def test_public_to_pem(self):
        """
        Check if public keys can be serialized and loaded correctly in PEM format.
        """
        public_pem = self.key.pub().key_to_pem()

        # Convert the PEM to a DER keystring
        prefix = "-----BEGIN PUBLIC KEY-----\n"
        postfix = "-----END PUBLIC KEY-----\n"
        keystring = decodebytes(public_pem[len(prefix):-len(postfix)])

        # Reconstruct a key with this keystring
        key = M2CryptoPK(keystring=keystring)

        self.assertEqual(public_pem, key.key_to_pem()) 

def test_private_to_pem(self):
        """
        Check if keys can be serialized and loaded correctly in PEM format.
        """
        private_pem = self.key.key_to_pem()

        # Convert the PEM to a DER keystring
        prefix = "-----BEGIN EC PRIVATE KEY-----\n"
        postfix = "-----END EC PRIVATE KEY-----\n"
        keystring = decodebytes(private_pem[len(prefix):-len(postfix)])

        # Reconstruct a key with this keystring
        key = M2CryptoSK(keystring=keystring)

        self.assertEqual(private_pem, key.key_to_pem()) 

def pem_to_bin(self, pem):
        """
        Convert a key in the PEM format into a key in the binary format.
        @note: Encrypted pem's are NOT supported and will silently fail.
        """
        return decodebytes(b"".join(pem.split(b"\n")[1:-2])) 

def extract_hashes(text):
    """
    Получает SHA1 хэши паролей пользователей из расшифрованных данных поля DATA

    :param text: расшифрованное поле DATA
    :return: кортеж хэшей: (SHA1(pwd), SHA1(TO_UPPER(pwd))
    """
    result = re.search('\d+,\d+,"(\S+)","(\S+)",\d+,\d+', text)
    if result is None:
        return
    return tuple([''.join('{:02x}'.format(byte) for byte in base64.decodebytes(x.encode())) for x in result.groups()])