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import numpy as np
import numpy.typing as npt
AR_f8: npt.NDArray[np.float64]
AR_c16: npt.NDArray[np.complex128]
AR_O: npt.NDArray[np.object_]
AR_U: npt.NDArray[np.str_]
poly_obj: np.poly1d
np.polyint(AR_U) # E: incompatible type
np.polyint(AR_f8, m=1j) # E: No overload variant
np.polyder(AR_U) # E: incompatible type
np.polyder(AR_f8, m=1j) # E: No overload variant
np.polyfit(AR_O, AR_f8, 1) # E: incompatible type
np.polyfit(AR_f8, AR_f8, 1, rcond=1j) # E: No overload variant
np.polyfit(AR_f8, AR_f8, 1, w=AR_c16) # E: incompatible type
np.polyfit(AR_f8, AR_f8, 1, cov="bob") # E: No overload variant
np.polyval(AR_f8, AR_U) # E: incompatible type
np.polyadd(AR_f8, AR_U) # E: incompatible type
np.polysub(AR_f8, AR_U) # E: incompatible type
np.polymul(AR_f8, AR_U) # E: incompatible type
np.polydiv(AR_f8, AR_U) # E: incompatible type
5**poly_obj # E: No overload variant
hash(poly_obj)
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