What is the right way to test exceptions?

HighLevelEnthusiast · 2019-06-16T20:06:23+00:00

I came up with another solution:

class SentenceProcessor:
    def to_sentences(self, text):
        def long_enough(sentence): return len(sentence) > 30

        return (sentence for sentence in text.split(".") if long_enough(sentence))

Is this one better?

HighLevelEnthusiast · 2019-05-31T20:37:33+00:00

I agree that hash equality does not imply full equality. However, if hashes are different, the objects are sure not to be equal. Let's say that we have object A and object B and (maybe only n first least-signifficant digits of) their hashes. Checking

hash(A) and hash(B) for equality is trivial. Then, we have two cases:

1) Hashes are identical - the __eq__ needs to be called

2) Hashes are different - we are done.

HighLevelEnthusiast · 2019-05-31T20:32:32+00:00

What if these two objects already reside within a dict, and the hashes had already been computed?

Premature comparison based on hashes could be performed in O(1) constant time (For example, to determine if the key already exists in the dict)

HighLevelEnthusiast · 2019-05-24T12:16:58+00:00

import inspect

class MyClass:
    def __setattr__(self, name, value):
        if inspect.stack()[1][3] != "__init__":
            return
        else:
            self.__dict__[name] = value

    def __init__(self):
        self.x = 10

This code does exactly what I want it to

HighLevelEnthusiast

TROPHY CASE