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| """ | |
| .. deprecated:: 1.20 | |
| *This module is deprecated. Instead of importing functions from* | |
| ``numpy.dual``, *the functions should be imported directly from NumPy | |
| or SciPy*. | |
| Aliases for functions which may be accelerated by SciPy. | |
| SciPy_ can be built to use accelerated or otherwise improved libraries | |
| for FFTs, linear algebra, and special functions. This module allows | |
| developers to transparently support these accelerated functions when | |
| SciPy is available but still support users who have only installed | |
| NumPy. | |
| .. _SciPy : https://www.scipy.org | |
| """ | |
| import warnings | |
| warnings.warn('The module numpy.dual is deprecated. Instead of using dual, ' | |
| 'use the functions directly from numpy or scipy.', | |
| category=DeprecationWarning, | |
| stacklevel=2) | |
| # This module should be used for functions both in numpy and scipy if | |
| # you want to use the numpy version if available but the scipy version | |
| # otherwise. | |
| # Usage --- from numpy.dual import fft, inv | |
| __all__ = ['fft', 'ifft', 'fftn', 'ifftn', 'fft2', 'ifft2', | |
| 'norm', 'inv', 'svd', 'solve', 'det', 'eig', 'eigvals', | |
| 'eigh', 'eigvalsh', 'lstsq', 'pinv', 'cholesky', 'i0'] | |
| import numpy.linalg as linpkg | |
| import numpy.fft as fftpkg | |
| from numpy.lib import i0 | |
| import sys | |
| fft = fftpkg.fft | |
| ifft = fftpkg.ifft | |
| fftn = fftpkg.fftn | |
| ifftn = fftpkg.ifftn | |
| fft2 = fftpkg.fft2 | |
| ifft2 = fftpkg.ifft2 | |
| norm = linpkg.norm | |
| inv = linpkg.inv | |
| svd = linpkg.svd | |
| solve = linpkg.solve | |
| det = linpkg.det | |
| eig = linpkg.eig | |
| eigvals = linpkg.eigvals | |
| eigh = linpkg.eigh | |
| eigvalsh = linpkg.eigvalsh | |
| lstsq = linpkg.lstsq | |
| pinv = linpkg.pinv | |
| cholesky = linpkg.cholesky | |
| _restore_dict = {} | |
| def register_func(name, func): | |
| if name not in __all__: | |
| raise ValueError("{} not a dual function.".format(name)) | |
| f = sys._getframe(0).f_globals | |
| _restore_dict[name] = f[name] | |
| f[name] = func | |
| def restore_func(name): | |
| if name not in __all__: | |
| raise ValueError("{} not a dual function.".format(name)) | |
| try: | |
| val = _restore_dict[name] | |
| except KeyError: | |
| return | |
| else: | |
| sys._getframe(0).f_globals[name] = val | |
| def restore_all(): | |
| for name in _restore_dict.keys(): | |
| restore_func(name) | |