ultratb.py 文件源码

def _format_list(self, extracted_list):
        """Format a list of traceback entry tuples for printing.

        Given a list of tuples as returned by extract_tb() or
        extract_stack(), return a list of strings ready for printing.
        Each string in the resulting list corresponds to the item with the
        same index in the argument list.  Each string ends in a newline;
        the strings may contain internal newlines as well, for those items
        whose source text line is not None.

        Lifted almost verbatim from traceback.py
        """

        Colors = self.Colors
        list = []
        for filename, lineno, name, line in extracted_list[:-1]:
            item = '  File %s"%s"%s, line %s%d%s, in %s%s%s\n' % \
                   (Colors.filename, py3compat.cast_unicode_py2(filename, "utf-8"), Colors.Normal,
                    Colors.lineno, lineno, Colors.Normal,
                    Colors.name, py3compat.cast_unicode_py2(name, "utf-8"), Colors.Normal)
            if line:
                item += '    %s\n' % line.strip()
            list.append(item)
        # Emphasize the last entry
        filename, lineno, name, line = extracted_list[-1]
        item = '%s  File %s"%s"%s, line %s%d%s, in %s%s%s%s\n' % \
               (Colors.normalEm,
                Colors.filenameEm, py3compat.cast_unicode_py2(filename, "utf-8"), Colors.normalEm,
                Colors.linenoEm, lineno, Colors.normalEm,
                Colors.nameEm, py3compat.cast_unicode_py2(name, "utf-8"), Colors.normalEm,
                Colors.Normal)
        if line:
            item += '%s    %s%s\n' % (Colors.line, line.strip(),
                                      Colors.Normal)
        list.append(item)
        return list