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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 _find_file(self, path, saltenv='base'):
        '''
        Locate the file path
        '''
        fnd = {'path': '',
               'rel': ''}

        if salt.utils.url.is_escaped(path):
            # The path arguments are escaped
            path = salt.utils.url.unescape(path)
        for root in self.opts['pillar_roots'].get(saltenv, []):
            full = os.path.join(root, path)
            if os.path.isfile(full):
                fnd['path'] = full
                fnd['rel'] = path
                return fnd
        return fnd