Project Euler 8

def problem_8(s):result=0ini=1count=0for i in range(0,13):if int(s[i])==0:count=count+1start=0end=13while end<1000:if count==0:ini=1for i in range(start,end):ini=ini*int(s[i])if(ini>result):result=iniif int(s[start])==0:count=count-1start=start+1if int(s[end])==0:count=count+1end=end+1return result