On: Python idioms I wish I'd learned earlier

[panzi]

Oh, wow. I didn't know the dict comprehensions. Since when do they exist? I always used:

    d = dict((key(x), value(x)) for x in xs)

[medecau → panzi]

http://legacy.python.org/dev/peps/pep-0274/

I'm not entirely sure how to interpret the PEP header. It dates back to 2001 and was updated in 2012. It's probably in python since 2.3 but maybe 2.7(2010)/3.0(2008).

[slig → panzi]

Since 2.7, IIRC.