testlib.py 文件源码

def _exc_info_to_string(self, err, test):
        """Converts a sys.exc_info()-style tuple of values into a string.

        This method is overridden here because we want to colorize
        lines if --color is passed, and display local variables if
        --verbose is passed
        """
        exctype, exc, tb = err
        output = ['Traceback (most recent call last)']
        frames = inspect.getinnerframes(tb)
        colorize = self.colorize
        frames = enumerate(self._iter_valid_frames(frames))
        for index, (frame, filename, lineno, funcname, ctx, ctxindex) in frames:
            filename = osp.abspath(filename)
            if ctx is None: # pyc files or C extensions for instance
                source = '<no source available>'
            else:
                source = ''.join(ctx)
            if colorize:
                filename = textutils.colorize_ansi(filename, 'magenta')
                source = colorize_source(source)
            output.append('  File "%s", line %s, in %s' % (filename, lineno, funcname))
            output.append('    %s' % source.strip())
            if self.verbose:
                output.append('%r == %r' % (dir(frame), test.__module__))
                output.append('')
                output.append('    ' + ' local variables '.center(66, '-'))
                for varname, value in sorted(frame.f_locals.items()):
                    output.append('    %s: %r' % (varname, value))
                    if varname == 'self': # special handy processing for self
                        for varname, value in sorted(vars(value).items()):
                            output.append('      self.%s: %r' % (varname, value))
                output.append('    ' + '-' * 66)
                output.append('')
        output.append(''.join(traceback.format_exception_only(exctype, exc)))
        return '\n'.join(output)