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pybind11/numpy.h does not require numpy at build time. #2720

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Dec 8, 2020
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pybind11/numpy.h does not require numpy at build time. #2720

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6 changes: 4 additions & 2 deletions docs/advanced/pycpp/numpy.rst
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Expand Up @@ -150,8 +150,10 @@ NumPy array containing double precision values.

When it is invoked with a different type (e.g. an integer or a list of
integers), the binding code will attempt to cast the input into a NumPy array
of the requested type. Note that this feature requires the
:file:`pybind11/numpy.h` header to be included.
of the requested type. This feature requires the :file:`pybind11/numpy.h`
header to be included. Note that :file:`pybind11/numpy.h` does not depend on
the NumPy headers, and thus can be used without declaring a build-time
dependency on NumPy; NumPy>=1.7.0 is a runtime dependency.

Data in NumPy arrays is not guaranteed to packed in a dense manner;
furthermore, entries can be separated by arbitrary column and row strides.
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