mysql-connector-python/lib/mysql/connector/aio/connection.py [1023:1071]:
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                elif isinstance(value, Decimal):
                    values.append(
                        lc_int(len(str(value).encode(charset)))
                        + str(value).encode(charset)
                    )
                    field_type = FieldType.DECIMAL
                elif isinstance(value, float):
                    values.append(struct.pack("<d", value))
                    field_type = FieldType.DOUBLE
                elif isinstance(value, (datetime.datetime, datetime.date)):
                    (
                        packed,
                        field_type,
                    ) = self._protocol.prepare_binary_timestamp(value)
                    values.append(packed)
                elif isinstance(value, (datetime.timedelta, datetime.time)):
                    (packed, field_type) = self._protocol.prepare_binary_time(value)
                    values.append(packed)
                else:
                    raise ProgrammingError(
                        "MySQL binary protocol can not handle "
                        f"'{value.__class__.__name__}' objects"
                    )
                types.append(int1store(field_type) + int1store(flags))
                name = attr_tuple[0].encode(charset)
                names.append(lc_int(len(name)) + name)

            # int<lenenc>    parameter_count    Number of parameters
            packet.extend(lc_int(len(self._query_attrs)))
            # int<lenenc>    parameter_set_count    Number of parameter sets.
            # Currently always 1
            packet.extend(lc_int(1))
            if values:
                packet.extend(
                    b"".join([struct.pack("B", bit) for bit in null_bitmap])
                    + int1store(1)
                )
                for _type, name in zip(types, names):
                    packet.extend(_type)
                    packet.extend(name)

                for value in values:
                    packet.extend(value)

        packet.extend(query)
        query = bytes(packet)
        try:
            read_timeout = kwargs.get("read_timeout", None)
            write_timeout = kwargs.get("write_timeout", None)
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mysql-connector-python/lib/mysql/connector/connection.py [934:982]:
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                elif isinstance(value, Decimal):
                    values.append(
                        lc_int(len(str(value).encode(charset)))
                        + str(value).encode(charset)
                    )
                    field_type = FieldType.DECIMAL
                elif isinstance(value, float):
                    values.append(struct.pack("<d", value))
                    field_type = FieldType.DOUBLE
                elif isinstance(value, (datetime.datetime, datetime.date)):
                    (
                        packed,
                        field_type,
                    ) = self._protocol.prepare_binary_timestamp(value)
                    values.append(packed)
                elif isinstance(value, (datetime.timedelta, datetime.time)):
                    (packed, field_type) = self._protocol.prepare_binary_time(value)
                    values.append(packed)
                else:
                    raise ProgrammingError(
                        "MySQL binary protocol can not handle "
                        f"'{value.__class__.__name__}' objects"
                    )
                types.append(int1store(field_type) + int1store(flags))
                name = attr_tuple[0].encode(charset)
                names.append(lc_int(len(name)) + name)

            # int<lenenc>    parameter_count    Number of parameters
            packet.extend(lc_int(len(self._query_attrs)))
            # int<lenenc>    parameter_set_count    Number of parameter sets.
            # Currently always 1
            packet.extend(lc_int(1))
            if values:
                packet.extend(
                    b"".join([struct.pack("B", bit) for bit in null_bitmap])
                    + int1store(1)
                )
                for _type, name in zip(types, names):
                    packet.extend(_type)
                    packet.extend(name)

                for value in values:
                    packet.extend(value)

        packet.extend(query)
        query = bytes(packet)
        try:
            read_timeout = kwargs.get("read_timeout", None)
            write_timeout = kwargs.get("write_timeout", None)
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