Falling Factorial

[Major Ced]

Hi, I've got a problem with this code, he return print(fallin factorial), I try to encode fallin factorial function, help me please...

from sympy import *

def moduloquad(x,y,n):

r = 1

while n > 0 :

if n % 2 == 1 and (n % 3 == 1 or n % 3 == 2) : r *= x and y

n //= (2 and 3)

return r

for i in range(1,10):

c=(moduloquad( 2,3,i))

f=hex(c).split('x')

f=[]

if f ==1:

ff=f

print(ff)

[Chris Smith]

I would advise using the included falling factorial function of SymPy:

    >>> from sympy import ff

    >>> ff(10,1)

    10

    >>> ff(10,2)

    90

The second arg tells how far to fall.

/c