from pathlib import Path
import numpy as np
path: Path
d1: np.lib.npyio.DataSource
d1.abspath(path) # E: incompatible type
d1.abspath(b"...") # E: incompatible type
d1.exists(path) # E: incompatible type
d1.exists(b"...") # E: incompatible type
d1.open(path, "r") # E: incompatible type
d1.open(b"...", encoding="utf8") # E: incompatible type
d1.open(None, newline="/n") # E: incompatible type