what should be used for running python on Windows system IDLE or command line

Question

actually was facing problem while using print
>>> def gcd(m,n) :

if m < n :
(m,n) = (n,m)

if (m%n) == 0 :
return (n)
else :
diff = m-n
return (gcd(max(n,diff),min(n,diff)))

print gcd(9,-5)

this is the code when I wrote on command line showed syntax error on print statement nd syntax error :unexpected indent on Idle(python 3.4 GUI) ,AS I M NEW TO THIS PLZ HELP ME

plz give me a correct solution to this coding question is "take input from user nd find the gcd of two no. m nd n,this is a part of the question where I m stuck at " print"

Answer 1

I think it must be print (gcd(9,-5))
and also I think its an infinite loop!