ex03 ok

d00/ex03/NULL_not_found.py

@@ -0,0 +1,21 @@
+def NULL_not_found(object: any) -> int:
+    nullType = type(object)
+
+    match object:
+        case None:
+            print("Nothing:", object, nullType)
+        # using a guard https://docs.python.org/3/reference/compound_stmts.html#guards
+        # (NaN == NaN) = false https://docs.python.org/3.10/reference/expressions.html#value-comparisons "A counter-intuitive implication is that not-a-number values are not equal to themselves"
+        case float() if object != object:
+            print("Cheese:", object, nullType)
+        case bool() if object == False :
+            print("Fake:", object, nullType)
+        case int() if object == 0 :
+            print("Zero:", object, nullType)
+        case str() if object == '' :
+            print("Empty:", object, nullType)
+        case _:
+            print("Type not Found")
+            return 1
+    
+    return 0

d00/ex03/tester.py

@@ -0,0 +1,21 @@
+from NULL_not_found import NULL_not_found
+
+Nothing = None
+Garlic = float("NaN")
+Garlic2 = float("2")
+Zero = 0
+Empty = '' # ’’
+Fake = False
+Right = True
+
+NULL_not_found(Nothing)
+NULL_not_found(Garlic)
+NULL_not_found(Zero)
+NULL_not_found(Empty)
+NULL_not_found(Fake)
+print(NULL_not_found("Brian"))
+
+print("--")
+NULL_not_found(Garlic2)
+NULL_not_found(Right)
+print(NULL_not_found(""))