assert <bool>, <açıklama>

def KelvinToFahrenheit(Temperature):
   assert (Temperature >= 0),"Colder than absolute zero!"
   return ((Temperature-273)*1.8)+32
​
print (int(KelvinToFahrenheit(505.78)))
print (KelvinToFahrenheit(-5))

451
Traceback (most recent call last):
  File "test.py", line 9, in <module>
    print KelvinToFahrenheit(-5)
  File "test.py", line 4, in KelvinToFahrenheit
    assert (Temperature >= 0),"Colder than absolute zero!"
AssertionError: Colder than absolute zero!