Method raise_if_exceeds

lib/matplotlib/ticker.py:1764–1780

Log at WARNING level if *locs* is longer than `Locator.MAXTICKS`. This is intended to be called immediately before returning *locs* from ``__call__`` to inform users in case their Locator returns a huge number of ticks, causing Matplotlib to run out of memory.

(self, locs)

        raise NotImplementedError('Derived must override')

    def raise_if_exceeds(self, locs):
        """
        Log at WARNING level if *locs* is longer than `Locator.MAXTICKS`.

        This is intended to be called immediately before returning *locs* from
        ``__call__`` to inform users in case their Locator returns a huge
        number of ticks, causing Matplotlib to run out of memory.

        The "strange" name of this method dates back to when it would raise an
        exception instead of emitting a log.
        """
        if len(locs) >= self.MAXTICKS:
            _log.warning(
                "Locator attempting to generate %s ticks ([%s, ..., %s]), "
                "which exceeds Locator.MAXTICKS (%s).",
                len(locs), locs[0], locs[-1], self.MAXTICKS)
        return locs

    def nonsingular(self, v0, v1):
        """