The ruby prime method converted to python.

Prime - Python vs. Ruby

#
# Python
#
def prime(num):
    rv=True;c=1;l=num-1
    while c<l:
        c=c+1
        if int(str(num/c).split('.')[-1])==0:
            rv=False;c=num        
    return rv


##
## Ruby
##
def prime? n 
  rv=true;c=1;l=n-1 
  until c>=l
    c+=1
    if (n.to_f/c.to_f).to_s.split(".")[-1].to_i==0
      rv=false;c=n
    end    
  end
  return rv
end