def reindent(self, text):
        """
        Reindents a string of unindented python code.
        """

        # Get each of our lines into an array.
        lines = text.split('\n')

        # Our new lines
        new_lines = []

        # Keeps track of how many indents we have.
        # Used for when we need to drop a level of indentation
        # only to reindent on the next line.
        credit = 0

        # Current indentation
        k = 0

        #################
        # THINGS TO KNOW
        #################

        # k += 1 means indent
        # k -= 1 means unindent
        # credit = 1 means unindent on the next line.

        for raw_line in lines:
            line = raw_line.strip()

            # ignore empty lines
            if not line:
                continue

            # If we have a line that contains python code that
            # should be unindented for this line of code.
            # and then reindented for the next line.
            if TemplateParser.re_block.match(line):
                k = k + credit - 1

            # We obviously can't have a negative indentation
            k = max(k, 0)

            # Add the indentation!
            new_lines.append(' ' * (4 * k) + line)

            # Bank account back to 0 again :(
            credit = 0

            # If we are a pass block, we obviously de-dent.
            if TemplateParser.re_pass.match(line):
                k -= 1

            # If we are any of the following, de-dent.
            # However, we should stay on the same level
            # But the line right after us will be de-dented.
            # So we add one credit to keep us at the level
            # while moving back one indentation level.
            if TemplateParser.re_unblock.match(line):
                credit = 1
                k -= 1

            # If we are an if statement, a try, or a semi-colon we
            # probably need to indent the next line.
            if line.endswith(':') and not line.startswith('#'):
                k += 1

        # This must come before so that we can raise an error with the
        # right content.
        new_text = '\n'.join(new_lines)

        if k > 0:
            self._raise_error('missing "pass" in view', new_text)
        elif 0 < k:
            self._raise_error('too many "pass" in view', new_text)

        return new_text
dataset/ETHPy150Open uwdata/termite-data-server/web2py/gluon/template.py/TemplateParser.reindent/swapped operands of `<`