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Build extension module from a Fortran 77 source string with f2py.
Parameters
----------
source : str or bytes
Fortran source of module / subroutine to compile
.. versionchanged:: 1.16.0
Accept str as well as bytes
modulename : str, optional
The name of the compiled python module
extra_args : str or list, optional
Additional parameters passed to f2py
.. versionchanged:: 1.16.0
A list of args may also be provided.
verbose : bool, optional
Print f2py output to screen
source_fn : str, optional
Name of the file where the fortran source is written.
The default is to use a temporary file with the extension
provided by the ``extension`` parameter
extension : ``{'.f', '.f90'}``, optional
Filename extension if `source_fn` is not provided.
The extension tells which fortran standard is used.
The default is ``.f``, which implies F77 standard.
.. versionadded:: 1.11.0
full_output : bool, optional
If True, return a `subprocess.CompletedProcess` containing
the stdout and stderr of the compile process, instead of just
the status code.
.. versionadded:: 1.20.0
Returns
-------
result : int or `subprocess.CompletedProcess`
0 on success, or a `subprocess.CompletedProcess` if
``full_output=True``
Examples
--------
.. literalinclude:: ../../source/f2py/code/results/compile_session.dat
:language: python
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Return the directory that contains the ``fortranobject.c`` and ``.h`` files.
.. note::
This function is not needed when building an extension with
`numpy.distutils` directly from ``.f`` and/or ``.pyf`` files
in one go.
Python extension modules built with f2py-generated code need to use
``fortranobject.c`` as a source file, and include the ``fortranobject.h``
header. This function can be used to obtain the directory containing
both of these files.
Returns
-------
include_path : str
Absolute path to the directory containing ``fortranobject.c`` and
``fortranobject.h``.
Notes
-----
.. versionadded:: 1.21.1
Unless the build system you are using has specific support for f2py,
building a Python extension using a ``.pyf`` signature file is a two-step
process. For a module ``mymod``:
* Step 1: run ``python -m numpy.f2py mymod.pyf --quiet``. This
generates ``_mymodmodule.c`` and (if needed)
``_fblas-f2pywrappers.f`` files next to ``mymod.pyf``.
* Step 2: build your Python extension module. This requires the
following source files:
* ``_mymodmodule.c``
* ``_mymod-f2pywrappers.f`` (if it was generated in Step 1)
* ``fortranobject.c``
See Also
--------
numpy.get_include : function that returns the numpy include directory
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