[Python-talk] Can I do this?

[bruce.labitt at autoliv.com]

I seem to recall a gotcha on this...  Can anyone help me sort through 
this?

Can't seem to remember if this sort of construct will do what I want... 

# start program snippet...
dt = 1e-6
t = arange(100)*dt      # make array of 100 elements
idx = 0
omega, rho = 3.*pi/4., 1.

funcs = [f0, f1, f2, f3, f4]    # fn are functions that are previously 
defined
args1 = [ (args for f0), (args for f1), (args for f2), (args for f3), 
(args for f4)]

"""args1 contains the arguments for funcs"""

p = getRank(M)          # only thing that is important about p is that it 
is calculated
                                # p is bounds checked

WW = zeros((p, t.size), dtype='complex128') # declare a px100 complex 
array

funclist = funcs[:p]    # just select the first p functions of func
arglist  = args1[:p]    # likewise the first p args to feed to the 
corresponding function

for bb, func, argn in zip( range(p), funclist, arglist):
        idx = bb
        WW[bb,:] = func( *argn )


Inside of args1[i] are tuples of parameters. 

For example:
        args1[0] = ( idx, t, snr )
        args1[3] = ( idx, t, snr, omega, rho )

Do I need to update arglist for every iteration of the loop?  Then I 
should remove arglist from the zip, right?

More like

for bb, func in zip( range(p), funclist ):
        args1 = [( bb, t, snr), ..., (bb, t, snr, omega, rho), ... ]
        WW[bb,:] = func( *args1[bb] )

???  Seems kind of silly just to update only the index...  An easier way 
possible?

I'm leaning a lot closer to the second "for loop" than the first...  Right 
decision?

Bruce

Bruce Labitt
Autoliv Electronics
1011B Pawtucket Blvd, PO Box 1858
Lowell, MA  01853

Email: bruce.labitt at autoliv.com. 
Tel:  (978) 674-6526
Fax: (978) 674-6581 

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