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= F2PY == F2PY
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A tool that provides connection between Python and Fortran languages
[[http://www.scipy.org/F2py |Official website]]		 <<TableOfContents(4)>>

A tool that provides connection between Python and Fortran languages [[http://www.scipy.org/F2py|Official website]]
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{{{  {{{
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}}}
f2py wraps Fortran code and allows to use it as a Python module.
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== "Hello world" ==
{{{
C File hello_world.f
      subroutine foo (a)
      integer a
      print*, "Hello from Fortran!"
      print*, "a=",a
      end
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Compile:

{{{
f2py -c -m hello hello.f --fcompiler=gfortran
}}}
Try it in Python:

{{{
import hello
print hello.__doc__
hello.foo(4)
}}}

== Compare pure Python and Python+Fortran ==
file (watermask, 10x10 degrees, 250m resolution): /home/zmaw/m300036/PythonSeminar/watermask/MOD44W.A2000055.h18v04.005.2009212173853.hdf
pure python script: /home/zmaw/m300036/PythonSeminar/watermask/resize_pure_python.py
python-fortran script: /home/zmaw/m300036/PythonSeminar/watermask/resize_watermask.py

F2PY

Contents

  1. "Hello world"
  2. Compare pure Python and Python+Fortran

A tool that provides connection between Python and Fortran languages Official website

Advanced examples how to use f2py 

Type:

f2py # to see the usage options
f2py -c --help-fcompiler # to see what local fortran compilers does f2py recognize

f2py wraps Fortran code and allows to use it as a Python module.

"Hello world"

C File hello_world.f
      subroutine foo (a)
      integer a
      print*, "Hello from Fortran!"
      print*, "a=",a
      end

Compile: 

f2py -c -m hello hello.f --fcompiler=gfortran

Try it in Python: 

import hello
print hello.__doc__
hello.foo(4)

Compare pure Python and Python+Fortran

file (watermask, 10x10 degrees, 250m resolution): /home/zmaw/m300036/PythonSeminar/watermask/MOD44W.A2000055.h18v04.005.2009212173853.hdf pure python script: /home/zmaw/m300036/PythonSeminar/watermask/resize_pure_python.py python-fortran script: /home/zmaw/m300036/PythonSeminar/watermask/resize_watermask.py

LehreWiki: PythonCourse/PythonLES/F2Py (last edited 2012-12-06 09:23:18 by MikhailItkin)