如何在python中使用f2py模块

Question

Just having a bit of trouble with using f2py. I have compiled to following code into a .so file just fine, and it imports into my python code just fine, but I am just wondering how do I then use it. I know there is a command doc but it jus says that this module has no attribute called " doc "

Fortran Code:

subroutine Test
implicit none
real, dimension(3600000) :: Alpha,Sigma
open(10, file='Alpha.txt')
read(10, *) Alpha
Sigma = (87.6*2)/((87.6*(sin(Alpha))**2)+(2*cos(Alpha)**2))
end subroutine

Python Code:

import matplotlib.pyplot as plt 
import numpy as np 
import Sigma

print(Sigma._doc_)

Error:

File "/home/tom/Desktop/f2py/Plot.py", line 5, in <module>
    print(Sigma._doc_)
AttributeError: 'module' object has no attribute '_doc_'

Do I have to somehow enter the doc attribute into the original fortran code? If so how would I go about that?

Answer 1

According to their example , it looks like you need to call the print on module.subroutine.__doc__ .

If I save your file to test1.f90 , then compile it

f2py -c test1.f90 -m test1

And then query the doc string.

~$ python
Python 3.6.4 (default, Jan  5 2018, 02:35:40) 
[GCC 7.2.1 20171224] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
>>> import test1
>>> print(test1.test.__doc__)
test()

Wrapper for ``test``.


>>>

Which looks fine to me since you have no arguments going to Test .