Python to emulate switch/case statements

switch_statement_example.py

# I like the example at https://inventwithpython.com/blog/2019/06/05/pythonic-ways-to-use-dictionaries/ better than this one I had found earlier>
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def dispatch_dict(operator, x, y):
    '''
    Python to emulate switch/case statements
    
    based on https://books.google.com/books?id=C0VKDwAAQBAJ&pg=PT226&lpg=PT226&dq=%22dispatch_dict+(operator%22&source=bl&ots=Ja0bhOYv9A&sig=j7OZGsWpps97z8jHByquiYIuRBY&hl=en&sa=X&ved=2ahUKEwjW4siOl8fcAhWKTN8KHSa3ApYQ6AEwAnoECAMQAQ#v=onepage&q=%22dispatch_dict%20(operator%22&f=false
    https://twitter.com/w_cazzola/status/1023917802627973126
    https://gist.github.com/carlessanagustin/6d7584b963338426a3691d355fe28f55
    '''
    return {
        '+': lambda: x + y,
        '-': lambda: x - y,
        '*': lambda: x * y,
        '/': lambda: x / y,
    }.get(operator, lambda: None)()
    
>>> dispatch_dict('+',21, dispatch_dict('*',3,7))
42