def linear_search(given_arr, search_for):
   search_at = 0
   search_res = False
# Match the value with each data element	
   while search_at < len(given_arr) and search_res is False:
      if given_arr[search_at] == search_for:
         search_res = True
      else:
         search_at = search_at + 1
   return search_res
arr= [45,89,56,78,90,12,10,2,34,1]
print(linear_search(arr, 12))
print(linear_search(arr, 91))