diff --git a/week12/continueanyway.py b/week12/continueanyway.py
new file mode 100644
index 0000000..b94f67c
--- /dev/null
+++ b/week12/continueanyway.py
@@ -0,0 +1,9 @@
+from sys import stderr
+
+def ca(fn):
+    def call(*args,**kwargs):
+        try:
+            fn(*args,**kwargs)
+        except Exception as e:
+            print(type(e).__name__,":",e,file=stderr)
+    return call
\ No newline at end of file
diff --git a/week12/ex1.py b/week12/ex1.py
new file mode 100644
index 0000000..b379d7f
--- /dev/null
+++ b/week12/ex1.py
@@ -0,0 +1,24 @@
+def handleZeroDivisionError(lmbd):
+    def runlambda(*args,**kwargs):
+        try:
+            return lmbd(*args,**kwargs)
+        except ZeroDivisionError:
+            print("Zero division detected!")
+    return runlambda
+
+# usage: handleZeroDivisionError(lambda)()
+# or:
+
+@handleZeroDivisionError
+def div(a,b):
+    return a/b
+
+def main():
+    print(handleZeroDivisionError(lambda:1/0)())
+    print(handleZeroDivisionError(lambda:1/1)())
+    print(div(1,0))
+    print(div(1,1))
+    return 0
+        
+if __name__ == '__main__':
+    main()
\ No newline at end of file
diff --git a/week12/ex2.py b/week12/ex2.py
new file mode 100644
index 0000000..057e954
--- /dev/null
+++ b/week12/ex2.py
@@ -0,0 +1,18 @@
+from continueanyway import ca
+
+@ca
+def ValidateInteger(i):
+    if type(i)==int:
+        print(f"{i} is a valid int")
+        return i
+    raise ValueError(f"The given number {i} is not a int")
+
+def main():
+    ValidateInteger("10")
+    ValidateInteger(10.0)
+    ValidateInteger("dshjkfsdjhfkjsd")
+    ValidateInteger(10)
+    return 0
+        
+if __name__ == '__main__':
+    main()
diff --git a/week12/ex3.py b/week12/ex3.py
new file mode 100644
index 0000000..d2bbe58
--- /dev/null
+++ b/week12/ex3.py
@@ -0,0 +1,21 @@
+try:from decimal import Decimal
+except:Decimal = float
+from continueanyway import ca
+
+@ca
+def ValidateNumerical(i):
+    try:
+        ii = Decimal(i)
+        print(f"{i} is a valid number")
+        return ii
+    except:raise TypeError(f"The given {i} is not a number")
+
+def main():
+    ValidateNumerical("10")
+    ValidateNumerical(10.0)
+    ValidateNumerical("dshjkfsdjhfkjsd")
+    ValidateNumerical(10)
+    return 0
+        
+if __name__ == '__main__':
+    main()
diff --git a/week12/ex4.py b/week12/ex4.py
new file mode 100644
index 0000000..d00c9e8
--- /dev/null
+++ b/week12/ex4.py
@@ -0,0 +1,32 @@
+from continueanyway import ca
+
+def handleIndexError(lmbd):
+    def runlambda(*args,**kwargs):
+        try:
+            return lmbd(*args,**kwargs)
+        except IndexError:
+            print("IndexError detected!")
+    return runlambda
+
+class listIE(list):
+    def __init__(self, iterable):
+        super().__init__(iterable)
+    
+    @handleIndexError
+    def __getattribute__(self, name):
+        return super().__getattribute__(name)
+    
+    @handleIndexError
+    def __getitem__(self, s):
+        return super().__getitem__(s)
+
+def main():
+    l1 = listIE([1,2,3])
+    print(l1[1])
+    print(l1[2])
+    print(l1[3])
+    
+    return 0
+        
+if __name__ == '__main__':
+    main()