raise Exception not catching exception as expected with two functions

Question

Here is the Code :

def funcFail():
    try:
        raise Exception("Failed externally")
        print("Should not print")
    except Exception as e:
        print(f"Exception : {e}")
        raise Exception(f"Exception in occured due: {e}")
    finally:
        return "This is finally block :P"
        print("This is finally block :P")

def checkexpcep():
    global k 
    k = []
    try:
        funcFail()
    except Exception as e:
        print(f"Exception out : {e}")
        k.append(str(e))
    finally:
        return "nothing"

checkexpcep()

Expected :

"Exception : Failed externally"
"This is finally block :P"
"Exception out : Exception in occured due: Failed externally"

Output :

"Exception : Failed externally"

Answer 1

next time try to use python debugger (any ide is good enough, pycharm or wing,..etc). anyway see my inline comment numbers in your code below:

def funcFail():
    try:
        # (2)
        raise Exception("Failed externally")
        print("Should not print")
    except Exception as e:
        print(f"Exception : {e}")
        # (3)
        raise Exception(f"Exception in occured due: {e}")   
    finally:
        # (4)
        return "This is finally block :P"
        print("This is finally block :P")

def checkexpcep():
    global k 
    k = []
    try:
        # (1)
        funcFail()
        # (5)
    except Exception as e:
        print(f"Exception out : {e}")
        k.append(str(e))
    finally:
        return "nothing"

checkexpcep()

after calling checkexpcep() you reach point 1 in the code. then you call funcFail() and reach point 2, at 2 you are raising an exception which cactched by the except block and you reach point 3 with this exception, after printing the exception, you are raising new exception at point 3, and you reach the finally block and python execute it (be aware, finally always executed). you are returning from finally block with the string "This is finally block :P".this shallow or hides the previous exception. the return brings you to point 5. nothing is done with the return value and the program is finished succefully.

Answer 2

If you actually want your expected output, then just move the return out of the finally block:

def funcFail():
    try:
        raise Exception("Failed externally")
        print("Should not print")
    except Exception as e:
        print(f"Exception : {e}")
        raise Exception(f"Exception in occurred due: {e}")
    finally:
        print("This is finally block :P")
    return "This is finally block :P"

def checkexpcep():
    global k 
    k = []
    try:
        funcFail()
    except Exception as e:
        print(f"Exception out : {e}")
        k.append(str(e))
    finally:
        return k,"nothing"

print(checkexpcep())

Output:

Exception : Failed externally
This is finally block :P
Exception out : Exception in occurred due: Failed externally
(['Exception in occurred due: Failed externally'], 'nothing')

(Note I added the print of a tuple at the end to show the value of k)