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numpy.ndarray.ctypes
...NumPy reference Array objects The N-dimensional array (ndarray) numpy.ndarray.ctypes...
numpy.ndarray.ctypes (Python attribute, in numpy.ndarray.ctypes)
ctypes foreign function interface (numpy.ctypeslib)
...NumPy reference NumPy’s module structure ctypes foreign function interface (numpy.ctypeslib)...
How to extend NumPy
...n writing extension modules is reference counting. It is an important reason for the popularity of f2py, weave, Cython, ctypes, etc…. If you mis-handle reference counts you can get problems from memory-leaks to segmentation faults. The only...
NumPy 1.15.0 Release Notes
...ses. Those functions are not used in numpy, but are kept for downstream compatibility. Numpy no longer monkey-patches ctypes with __array_interface__ Previously numpy added __array_interface__ attributes to all the integer types from ctyp...
NumPy 1.16.0 Release Notes
...ufunc__. Improved support for the ARM and POWER architectures. Improved support for AIX and PyPy. Improved interop with ctypes. Improved support for PEP 3118. New functions New functions added to the numpy.lib.recfuntions module to ease...
NumPy 1.17.0 Release Notes
...real valued FFTs with near prime lengths has improved and is on par with complex valued FFTs. Further improvements to ctypes support in numpy.ctypeslib A new numpy.ctypeslib.as_ctypes_type function has been added, which can be used to con...
NumPy 1.21.0 Release Notes
...for the mode argument. (gh-17492) np.typeDict has been formally deprecated np.typeDict is a deprecated alias for np.sctypeDict and has been so for over 14 years (6689502). A deprecation warning will now be issued whenever getting np.type...
NumPy 1.21.1 Release Notes
...hon 3.9.0 #19502: MAINT: Start testing with Python 3.10.0b3. #19503: MAINT: Add missing dtype overloads for object- and ctypes-based… #19510: REL: Prepare for NumPy 1.21.1 release....
NumPy 1.22.0 Release Notes
...#17843, has again been expanded: the plugin now is now responsible for setting the platform-specific precision of numpy.ctypeslib.c_intp, the latter being used as data type for various numpy.ndarray.ctypes attributes. Without the plugin, af...
numpy.matrix
...verse of invertible self. TReturns the transpose of the matrix. baseBase object if memory is from some other object. ctypesAn object to simplify the interaction of the array with the ctypes module. dataPython buffer object pointing to t...
numpy.ndarray
...intsTuple of array dimensions. stridestuple of intsTuple of bytes to step in each dimension when traversing an array. ctypesctypes objectAn object to simplify the interaction of the array with the ctypes module. basendarrayBase object if...
numpy.ndarray.ctypes
...NumPy reference Array objects The N-dimensional array (ndarray) numpy.ndarray.ctypes...
numpy.polynomial.chebyshev.chebdomain
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.chebyshev.chebone
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.chebyshev.chebx
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.chebyshev.chebzero
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.hermite.hermdomain
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.hermite.hermone
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.hermite.hermx
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.hermite.hermzero
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.hermite_e.hermedomain
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.hermite_e.hermeone
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.hermite_e.hermex
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.hermite_e.hermezero
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.laguerre.lagdomain
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.laguerre.lagone
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.laguerre.lagx
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.laguerre.lagzero
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.legendre.legdomain
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.legendre.legone
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.legendre.legx
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.legendre.legzero
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.polynomial.polydomain
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.polynomial.polyone
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.polynomial.polyx
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.polynomial.polynomial.polyzero
...to element in memory requires jumps of 2 bytes. To move from row-to-row, one needs to jump 8 bytes at a time (2 * 4). ctypesctypes objectClass containing properties of the array needed for interaction with ctypes. basendarrayIf the array...
numpy.recarray
...), ('z', '<i4')]) Attributes: TView of the transposed array. baseBase object if memory is from some other object. ctypesAn object to simplify the interaction of the array with the ctypes module. dataPython buffer object pointing to t...
numpy.require
...ion is useful to be sure that an array with the correct flags is returned for passing to compiled code (perhaps through ctypes). Parameters: aarray_likeThe object to be converted to a type-and-requirement-satisfying array. dtypedata-type...
The N-dimensional array (ndarray)
...otocol. __array_interface__ Python-side of the array interface __array_struct__ C-side of the array interface ctypes foreign function interface ndarray.ctypes An object to simplify the interaction of the array with the ctypes mo...
Typing (numpy.typing)
...e to all platforms. Assigning the (platform-dependent) precision of c_intp. Without the plugin the type will default to ctypes.c_int64. New in version 1.22. Examples To enable the plugin, one must add it to their mypy configuration fil...
Using NumPy C-API
...ibraries from Python Hand-generated wrappers F2PY Cython Complex addition in Cython Image filter in Cython Conclusion ctypes Having a shared library Loading the shared library Converting arguments Calling the function ndpointer Complete...
Using Python as glue
...then imported to Python using the import command, or calling a shared-library subroutine directly from Python using the ctypes module. Writing an extension module is the most common method. Warning Calling C-code from Python can result in...
Array API
...two arguments. Be sure that stealing a reference in this way to the input object is justified. ptr – The address to a (ctype* for 1-d, ctype** for 2-d or ctype*** for 3-d) variable where ctype is the equivalent C-type for the data type. On...
Data type objects (dtype)
...ach be lists of the same length as the names and formats lists. The offsets value is a list of byte offsets (limited to ctypes.c_int) for each field, while the titles value is a list of titles for each field (None can be used if no title is...
Extending
...-provided BitGenerators as long as these export a small set of required functions. Numba Numba can be used with either CTypes or CFFI. The current iteration of the BitGenerators all export a small set of functions through both interfaces....
Scalars
...es The array scalar objects have an array priority of NPY_SCALAR_PRIORITY (-1,000,000.0). They also do not (yet) have a ctypes attribute. Otherwise, they share the same attributes as arrays: generic.flags The integer value of flags. gene...