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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _init_compiled(cls, dialect, connection, dbapi_connection, compiled, parameters):
 """Initialize execution context for a Compiled construct."""


        self = cls.__new__(cls)
        self.root_connection = connection
        self._dbapi_connection = dbapi_connection
        self.dialect = connection.dialect

        self.compiled = compiled

        # this should be caught in the engine before
        # we get here
        assert compiled.can_execute

        self.execution_options = compiled.execution_options.union(
            connection._execution_options)

        self.result_column_struct = (
            compiled._result_columns, compiled._ordered_columns,
            compiled._textual_ordered_columns)

        self.unicode_statement = util.text_type(compiled)
        if not dialect.supports_unicode_statements:
            self.statement = self.unicode_statement.encode(
                self.dialect.encoding)
        else:
            self.statement = self.unicode_statement

        self.isinsert = compiled.isinsert
        self.isupdate = compiled.isupdate
        self.isdelete = compiled.isdelete
        self.is_text = compiled.isplaintext

        if not parameters:
            self.compiled_parameters = [compiled.construct_params()]
        else:
            self.compiled_parameters = \
                [compiled.construct_params(m, _group_number=grp) for
                 grp, m in enumerate(parameters)]

            self.executemany = len(parameters) > 1

        self.cursor = self.create_cursor()

        if self.isinsert or self.isupdate or self.isdelete:
            self.is_crud = True
            self._is_explicit_returning = bool(compiled.statement._returning)
            self._is_implicit_returning = bool(
                compiled.returning and not compiled.statement._returning)

        if self.compiled.insert_prefetch or self.compiled.update_prefetch:
            if self.executemany:
                self._process_executemany_defaults()
            else:
                self._process_executesingle_defaults()

        processors = compiled._bind_processors

        # Convert the dictionary of bind parameter values
        # into a dict or list to be sent to the DBAPI's
        # execute() or executemany() method.
        parameters = []
        if dialect.positional:
            for compiled_params in self.compiled_parameters:
                param = []
                for key in self.compiled.positiontup:
                    if key in processors:
                        param.append(processors[key](compiled_params[key]))
                    else:
                        param.append(compiled_params[key])
                parameters.append(dialect.execute_sequence_format(param))
        else:
            encode = not dialect.supports_unicode_statements
            for compiled_params in self.compiled_parameters:

                if encode:
                    param = dict(
                        (
                            dialect._encoder(key)[0],
                            processors[key](compiled_params[key])
                            if key in processors
                            else compiled_params[key]
                        )
                        for key in compiled_params
                    )
                else:
                    param = dict(
                        (
                            key,
                            processors[key](compiled_params[key])
                            if key in processors
                            else compiled_params[key]
                        )
                        for key in compiled_params
                    )

                parameters.append(param)
        self.parameters = dialect.execute_sequence_format(parameters)

        self.statement = compiled
        return self