Functional schmunctional...

[Terry Reedy]

r0g wrote:

> 
> def inet2ip(n):
>   p = (n/16777216)
>   q = ((n-(p*16777216))/65536)
>   r = ((n-((p*16777216)+(q*65536)))/256)
>   s = ((n-((p*16777216)+(q*65536)+(r*256))))
>   return str(p)+"."+str(q)+"."+str(r)+"."+str(s)

Beyond what other wrote:
To future-proof code, use // instead of / for integer division.
To get both quotient and remainder, use divmod(num,den)
For future reading (and generalization) documenting magic constants helps.

In 3.0:

def inet2ip(n):
   p = (n//16777216)
   q = ((n-(p*16777216))//65536)
   r = ((n-((p*16777216)+(q*65536)))//256)
   s = ((n-((p*16777216)+(q*65536)+(r*256))))
   return str(p)+"."+str(q)+"."+str(r)+"."+str(s)

def inet2ip2(n):
     p,n=divmod(n,16777216) # 1<<24
     q,n=divmod(n,65536) # 1<<16
     r,s=divmod(n,256) # 1<<8
     return str(p)+"."+str(q)+"."+str(r)+"."+str(s)

print(inet2ip(1000000000), inet2ip2(1000000000))

 >>>
59.154.202.0 59.154.202.0