On 12/06/2013 12:32 PM, Nick Cash wrote: > Nope: > > Python 3.3.0 (default, Sep 25 2013, 19:28:08) > [GCC 4.7.2] on linux2 > Type "help", "copyright", "credits" or "license" for more information. >>>> import dis >>>> dis.dis(lambda x: x*x) > 1 0 LOAD_FAST 0 (x) > 3 LOAD_FAST 0 (x) > 6 BINARY_MULTIPLY > 7 RETURN_VALUE >>>> dis.dis(lambda x: x**2) > 1 0 LOAD_FAST 0 (x) > 3 LOAD_CONST 1 (2) > 6 BINARY_POWER > 7 RETURN_VALUE > > > The reasons why have already been answered, I just wanted to point > out that Python makes it extremely easy to check these sorts of > things for yourself.
But this is just the interpreter bytecode that dis is showing. It's not showing the underlying implementation of binary_power, for example. That could be defined in C code with any number of optimizations, and indeed it appears that some are being done. dis is great for showing how python code breaks down, but it can't tell you much about the code that underlies the byte codes themselves. -- https://mail.python.org/mailman/listinfo/python-list
