<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def compile_file(self, filename, encoding="utf-8", bare=False):
        '''compile a CoffeeScript script file to a JavaScript code.

        filename can be a list or tuple of filenames,
        then contents of files are concatenated with line feeds.

        if bare is True, then compile the JavaScript without the top-level
        function safety wrapper (like the coffee command).
        '''
        if isinstance(filename, _BaseString):
            filename = [filename]

        scripts = []
        for f in filename:
            with io.open(f, encoding=encoding) as fp:
                scripts.append(fp.read())

        return self.compile('\n\n'.join(scripts), bare=bare)