[Tutor] Exercise in writing a python function.

[Kermit Rose]

From: Alan Gauld 
Date: 08/09/06 03:30:28 
To: Kermit Rose; tutor at python.org 
Subject: Re: [Tutor] Exercise in writing a python function. 
 
> The current specifications for the function are: 
> 
> def incr(mult,z,zlim,mpylist): 
> # mult is a vector of exponents for the multipliers in mpylist. 
> # z is a positive odd integer. 
> # zlim is the upper bound critical value for the sum of ( 
> mpylist[k][0] * 
> mpylist[k][1] ) 
 
Just to clarify what this means. 
you have mpylist = [(2,3),(3,5),(5,7)] 
So the products list is: [6,15,35] 
So zlim in this case should be greater than the 
sum of products: 6+15+35 = 56 
 
*******
 
Oops.  That is what  I said.
 
I made a mistake in the specificiations.
 
I should have specified that 
for this example
that
3*mult[0] + 5 * mult[1] + 7 * mult[2] must be < zlim.
 
>>>>>
 
 
 
# where kth multiplier is mpylist [k][0] 
> # and kth multiplier index is mpylist [k][1] 
 
Not sure what you mean by the multiplier index? 
The sum above shows mpylist[k][1] being used in the multiplication, 
not as an index? 
 
 
******
 
Yes.  It's confusing because of my mistake of confusing mpylist[k][1] with
mult[k].
 
 
>>>>
 
> # function incr returns the next value of vector mult. 
 
I'm still not clear what mult does, your example above doesn't 
refer to mult anywhere? 
 
 
*****
 
Yes, another consequence of my mistake in the specifications.
 
 
Kermit   <  kermit at polaris.net   >