models.py 文件源码

def _read_multi_column_list(self, list_file):
        rows = []
        if not os.path.isfile(list_file):
            raise RuntimeError('File %s does not exist.' % (list_file,))
        try:
            for line in fileinput.input(list_file):
                if line.strip().startswith('#'):
                    continue
                parsed_line = re.findall('[\w/(-.)]+', line)
                if len(parsed_line):
                    # perform some sanity checks
                    if len(parsed_line) not in (2, 3, 4):
                        raise IOError("The read line '%s' from file '%s' could not be parsed successfully!" % (
                            line.rstrip(), list_file))
                    if len(rows) and len(rows[0]) != len(parsed_line):
                        raise IOError(
                            "The parsed line '%s' from file '%s' has a different number of elements than the first parsed line '%s'!" % (
                                parsed_line, list_file, rows[0]))
                    # append the read line
                    rows.append(parsed_line)
            fileinput.close()
        except IOError as e:
            raise RuntimeError("Error reading the file '%s' : '%s'." % (list_file, e))

        # return the read list as a vector of columns
        return rows