def get_stages_from_blocks(ws, rs):
    """Gets ws/ds of network at each stage from per block values."""
    ts_temp = zip(ws + [0], [0] + ws, rs + [0], [0] + rs)
    ts = [w != wp or r != rp for w, wp, r, rp in ts_temp]
    s_ws = [w for w, t in zip(ws, ts[:-1]) if t]
    s_ds = np.diff([d for d, t in zip(range(len(ts)), ts) if t]).tolist()
    return s_ws, s_ds
Gets ws/ds of network at each stage from per block values.
fastreid/modeling/backbones/regnet/regnet.py