Language design
Steven D'Aprano
steve at pearwood.info
Tue Sep 10 02:09:25 EDT 2013
Some time ago, Tom Christiansen wrote about the "Seven Deadly Sins of
Perl":
http://www.perl.com/doc/FMTEYEWTK/versus/perl.html
What design mistakes, traps or gotchas do you think Python has? Gotchas
are not necessarily a bad thing, there may be good reasons for it, but
they're surprising.
To get started, here are a couple of mine:
- Python is so dynamic, that there is hardly anything at all that can be
optimized at compile time.
- The behaviour of mutable default variables is a gotcha.
- Operators that call dunder methods like __add__ don't use the same
method resolution rules as regular methods, they bypass the instance and
go straight to the type, at least for new-style classes.
--
Steven
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