circuitpython/tools/bitmap_font/adafruit_bitmap_font/glyph_cache.py


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import gc

class GlyphCache:
    def __init__(self):
        self._glyphs = {}

    def get_glyph(self, code_point):
        if code_point in self._glyphs:
            return self._glyphs[code_point]

        s = set()
        s.add(code_point)
        self._glyphs[code_point] = None
        self.load_glyphs(s)
        gc.collect()
        return self._glyphs[code_point]