ufunc
numpy.ctypeslib
numpy.fft
numpy.linalg
numpy.matlib
numpy.polynomial.polynomial
numpy.polynomial.chebyshev
numpy.polynomial.hermite
numpy.polynomial.hermite_e
numpy.polynomial.laguerre
numpy.polynomial.legendre
numpy.random
numpy.testing
numpy.testing.overrides
numpy.typing
numpy.distutils
poly1d.__call__
方法
将 self 称为函数。