import numpy as np nd = np.array([[1, 2], [3, 4]]) # item reveal_type(nd.item()) # E: Any reveal_type(nd.item(1)) # E: Any reveal_type(nd.item(0, 1)) # E: Any reveal_type(nd.item((0, 1))) # E: Any # tolist reveal_type(nd.tolist()) # E: Any # itemset does not return a value # tostring is pretty simple # tobytes is pretty simple # tofile does not return a value # dump does not return a value # dumps is pretty simple # astype reveal_type(nd.astype("float")) # E: numpy.ndarray reveal_type(nd.astype(float)) # E: numpy.ndarray reveal_type(nd.astype(float, "K")) # E: numpy.ndarray reveal_type(nd.astype(float, "K", "unsafe")) # E: numpy.ndarray reveal_type(nd.astype(float, "K", "unsafe", True)) # E: numpy.ndarray reveal_type(nd.astype(float, "K", "unsafe", True, True)) # E: numpy.ndarray # byteswap reveal_type(nd.byteswap()) # E: numpy.ndarray reveal_type(nd.byteswap(True)) # E: numpy.ndarray # copy reveal_type(nd.copy()) # E: numpy.ndarray reveal_type(nd.copy("C")) # E: numpy.ndarray # view class SubArray(np.ndarray): pass reveal_type(nd.view()) # E: numpy.ndarray reveal_type(nd.view(np.int64)) # E: numpy.ndarray # replace `Any` with `numpy.matrix` when `matrix` will be added to stubs reveal_type(nd.view(np.int64, np.matrix)) # E: Any reveal_type(nd.view(np.int64, SubArray)) # E: SubArray # getfield reveal_type(nd.getfield("float")) # E: numpy.ndarray reveal_type(nd.getfield(float)) # E: numpy.ndarray reveal_type(nd.getfield(float, 8)) # E: numpy.ndarray # setflags does not return a value # fill does not return a value