try: from uarray import array except ImportError: try: from array import array except ImportError: print("SKIP") raise SystemExit def test(a): print(a) a.append(1.2) print(len(a), '%.3f' % a[0]) a.append(1) a.append(False) print(len(a), '%.3f %.3f' % (a[1], a[2])) a[-1] = 3.45 print('%.3f' % a[-1]) test(array('f')) test(array('d')) print('{:.4f}'.format(array('f', b'\xcc\xcc\xcc=')[0]))