You were given a string of integer temperature values. Create a function `lowest_temp(t)` and return the lowest value or `None/null/Nothing` if the string is empty.

Difficulty: EASY
Starter code: def lowest_temp(t):
	

Solutions:
def lowest_temp(t):
	return min((int(x) for x in t.split()), default=None)


def lowest_temp(t):
	return min(map(int, t.split()), default=None)


def lowest_temp(t):
	if t:
		return min([int(x) for x in t.split()])
	else:
		return None


def lowest_temp(s):
	return min((int(x) for x in s.split()), default=None)


def lowest_temp(t):
	if t == '':
		return None
	t = t.split()
	low = int(t[0])
	for i in t:
		if int(i) < low:
			low = int(i)
	return low


lowest_temp = lambda s: min(map(int, s.split()), default=None)


lowest_temp = lambda t: min((d for d in map(int, t.split()))) if t else None