On Tue, May 4, 2010 at 7:23 AM, superpollo <ute...@esempio.net> wrote: > Stefan Behnel ha scritto: >> >> superpollo, 04.05.2010 12:28: >>> >>> i think there is an issue if you -- say -- produce python code, from >>> within another programming environment, to be executed on the fly, at >>> least in some instances. there might be problems if for example you >>> generate code from a one-line template. >> >> There are a couple of code generation tools available that you can find on >> PyPI. >> >> However, the main reason why this problem doesn't hurt much in Python is >> that Python is a dynamic language that can get you extremely far without >> generating code. It's simply not necessary in most cases, so people don't >> run into problems with it. >> >> Stefan >> > > Python 2.5.4 (r254:67916, Feb 17 2009, 20:16:45) > [GCC 4.3.3] on linux2 > Type "help", "copyright", "credits" or "license" for more information. >>>> A,B=2,3 >>>> if A>B: > ... print A+B > ... else: > ... print A**B-B**2 > ... > -1 >>>> A,B=3,2 >>>> if A>B: > ... print A+B > ... else: > ... print A**B-B**2 > ... > 5 >>>> > > tell me please: how can generate the same output (depending on A and B) > without control structure? i mean in a natural "pythonic" way... > > bye
Well, it requires 2.6 or 3 Python 2.6.5 (r265:79063, Mar 21 2010, 22:38:52) [GCC 4.2.1 (Apple Inc. build 5646) (dot 1)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> from __future__ import print_function >>> A,B=2,3;print(A+B if A > B else A**B - B**2) -1 >>> A,B=3,2;print(A+B if A > B else A**B - B**2) 5 > > -- > http://mail.python.org/mailman/listinfo/python-list > -- http://mail.python.org/mailman/listinfo/python-list
