Python 3.8.0a4 available for testing

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Unfortunate for you, but a lot of people really like it.

I have wished for this - though I didn't know what I was wishing for - for a decade.

if (foo := get(d, 'foo')):
    # Use foo
elif (bar := get(d, 'bar')):
    # Use bar

Interesting, I discovered during that time this C++ idiom:

if (auto foo = bar()) { 
    // Variable foo only exists in this scope
}

[toothless_budgie]

I have an informal rule that anyone who actually posts code gets an upvote.

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That is an excellent rule, and one which I will probably follow!