square = {2: 4, 3: 9, -1: 1, -2: 4}
# the smallest key
key1 = min(square)
print("The smallest key:", key1) # -2
# the key whose value is the smallest
key2 = min(square, key = lambda k: square[k])
print("The key with the smallest value:", key2) # -1
# getting the smallest value
print("The smallest value:", square[key2]) # 1
#OUTPUT
#The smallest key: -2
#The key with the smallest value: -1
#The smallest value: 1