You should at least write in a better way, like:
lst=[5,9,2,5,13]
item = int(input("Please enter the search item."))
found = False
for search in range(len(lst)):
if item == (lst[search]):
found = True
if found:
print('{} is in the list'.format(item))
else:
print('{} is not in the list'.format(item))