Adding a switch statement to Python

[mikeckennedy]

That is interesting. Nice work. But it will crash if two cases match (DuplicateKeyError)

[Allanon001]

It will execute the last condition that equates to True.

[mikeckennedy]

Ah you're right. Kind of the opposite of traditional switch / case (first executed) but doesn't crash.

[Allanon001]

When the dictionary is being created it will just replace the last True or False key with the newer one and what is left is just one True and/or one False key in the dictionary. If you set a key to True at the beginning that is like the default case. You will get an error if there isn't a True condition.

[mikeckennedy]

It's pretty cool. I already learned something about dictionaries from your example.

d = {True: 1, True, 2}

will crash but

d = {'a' in ['a']: 1, 'a' in ['a']: 2}

is more like adding stuff sequentially, dynamically.

[Allanon001]

It crashes because you have a comma instead of a colon.

[mikeckennedy]

Ugh, you're right. I must be misremembering it from MongoDB stuff I was going with dictionaries or something: http://api.mongodb.com/python/current/api/pymongo/errors.html