I am trying to call a function file "el2xv.pro" which I have in my working directory. I tried both ways below with no luck. Please help.

>>> from idlpy import *
>>> IDL.el2xv(Mcen, a, E, I, O, w, M)
% Attempt to call undefined function: 'EL2XV'.
% Execution halted at: $MAIN$
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/harris/idl87/lib/bridges/idlpy.py", line 288, in __call__
if err: raise IDLError(output)
idlpy.IDLError: % Attempt to call undefined function: 'EL2XV'.


>>> import el2xv
>>> el2xv(Mcen, a, E, I, O, w, M)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'module' object is not callable