try_else.py

def try_else(x, y):
    a = lambda x, y: x % y
    b = lambda x, y: x / y
    try:
        result = a(x,y) + b(x,y)
        f = open('Cookie', 'w+')
    except ZeroDivisionError as z:
        print(z)
        # divide by zero.
    except PermissionError as p:
        print(p)
        # can't open the file.
    except Exception as e:
        print(e)
        # other exceptions.
    else:
        # all try condition no exception.
        # means you have to close filestream.
        f.close()
    finally:
        # clear all content or other things.