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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 compile_file(self, filename, ns):
 """ Compile a MOF file into a namespace of the associated CIM repository. Parameters: filename (:term:`string`):
 The path name of the MOF file containing the MOF statements to be compiled. ns (:term:`string`):
 The name of the CIM namespace in the associated CIM repository that is used for lookup of any dependent CIM elements, and that is also the target of the compilation. Raises: IOError: MOF file not found. MOFParseError: Syntax error in the MOF. : Any exceptions that are raised by the repository connection class. """

        if self.parser.verbose:
            self.parser.log(
                _format("Compiling file {0!A}", filename))

        if not os.path.exists(filename):
            # try to find in search path
            rfilename = self.find_mof(os.path.basename(filename[:-4]).lower())
            if rfilename is None:
                raise IOError(
                    _format("No such file: {0!A}", filename))
            filename = rfilename
        with open(filename, "r") as f:
            mof = f.read()

        return self.compile_string(mof, ns, filename=filename)