Differences between revisions 1 and 14 (spanning 13 versions)
⇤ ← Revision 1 as of 2012-12-05 18:28:46 →
Size: 359
Editor: MikhailItkin
Comment:
← Revision 14 as of 2012-12-06 09:23:18 → ⇥
Size: 1160
Editor: MikhailItkin
Comment:
Deletions are marked like this. Additions are marked like this.
Line 1: Line 1:
= F2PY == F2PY
Line 3: Line 3:
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]]
Line 8: Line 9:
Enter {{{f2py}}} to see the usage options
Enter {{{f2py -c --help-fcompiler}}} to see what fortran compilers does f2py recognize		 {{{
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}}}


Real world example: moving window averaging

 * Fortran code: [[ /ArStats | code ]]
 * Python code: [[/ResizeWaterMaskPython | code]]
 * Fortran+Python: [[ /ResizeWaterMaskFortran | code]]

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

Real world example: moving window averaging

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