Python: approaches to handling multiple exceptions and doing something if any exception

python_do_something_on_any_exception.py

class ExceptionA(Exception):
    pass 

class ExceptionB(Exception):
    pass 

class ExceptionC(Exception):
    pass 

values_to_test = ["A", "B", "C", "D"]

def do_something(value: str):
    if value == "A":
        raise ExceptionA
    elif value == "B":
        raise ExceptionB
    elif value == "C":
        raise ExceptionC
    else:
        print("No exceptions")

def do_on_any_error():
    print("There was an exception")

# Approach 1: duplicate for each exception caught - 2 + 3*numExceptions lines
print("\n\nAPPROACH 1")
for value in values_to_test:
    try:
        do_something(value)
    except ExceptionA:
        print("Exception A")
        do_on_any_error()
    except ExceptionB:
        print("Exception B")
        do_on_any_error()
    except ExceptionC:
        print("Exception C")
        do_on_any_error()

# Approach 2: get error in finally - 6 + 3*numExceptions lines
print("\n\nAPPROACH 2")
for value in values_to_test:
    try:
        do_something(value)
        error = None
    except ExceptionA as e:
        print("Exception A")
        error = e
    except ExceptionB as e:
        print("Exception B")
        error = e
    except ExceptionC as e:
        print("Exception C")
        error = e
    finally:
        if error:
            do_on_any_error()

# Approach 3: boolean
# only works if not raising error or returning in excepts - 6 + 2*numExceptions lines
print("\n\nAPPROACH 3")
for value in values_to_test:
    no_error = False
    try:
        do_something(value)
        no_error = True
    except ExceptionA as e:
        print("Exception A")
    except ExceptionB as e:
        print("Exception B")
    except ExceptionC as e:
        print("Exception C")
    if not no_error:
        do_on_any_error()

# Approach 4: Catch all in the same except and check error type - 4 + 2*numExceptions lines
print("\n\nAPPROACH 4")
for value in values_to_test:
    try:
        do_something(value)
    except (ExceptionA, ExceptionB, ExceptionC) as e:
        if isinstance(e, ExceptionA):
            print("Exception A")
        if isinstance(e, ExceptionB):
            print("Exception B")
        if isinstance(e, ExceptionC):
            print("Exception C")
        do_on_any_error()