Override 'and' and 'or'
Is it possible to override 'and' and/or 'or'? I cannot find a special method for it... __and__ and __rand__ and __or__ and __ror__ are for binary manipulation... any proposals? Have marvelous sunday, Marco -- http://mail.python.org/mailman/listinfo/python-list
Re: Override 'and' and 'or'
On 7 Okt., 16:19, Steven D'Aprano <[EMAIL PROTECTED] cybersource.com.au> wrote: > On Sun, 07 Oct 2007 13:52:15 +, Dekker wrote: > > Is it possible to override 'and' and/or 'or'? > > Not without hacking the Python source code, in which case what you've got > is no longer Python. > > Why do you want to do so? > > -- > Steven. Well I think it is not possible what I wanted to achieve. By overriding the "and" and "or" keyword I wanted to return a new object: SqlValueInt(4) and SqlValueInt(5) --> SqlOpAnd(SqlValueInt(4), SqlValueInt(5)) This is only possible for: +, -, /, *, >, >=, ... Well... I have to live with the (binary) __and__, __or__ option and the user has to write: SqlValueInt(4) & SqlValueInt(5) --> SqlOpAnd(SqlValueInt(4), SqlValueInt(5)) Thanks for your input, but __nonzero__ is not of any help in this case... I want to abuse the "magic" functions for some transformations and not some evaluation. Marco -- http://mail.python.org/mailman/listinfo/python-list
Installed Python 3 on Mac OS X Yosemite but its still Python 2.7
I am currently running OS X Yosemite (10.10.2) on my MacBook Pro... By default, Apple ships Python 2.7.6 on Yosemite. Just downloaded and ran this installer for Python 3: python-3.4.3-macosx10.6.pkg When I opened up my Terminal and typed in python, this is what came up: Python 2.7.6 (default, Sep 9 2014, 15:04:36) [GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.39)] on darwinType "help", "copyright", "credits" or "license" for more information.>>> Sorry, I am very new to Python... Question(s): (1) Does anyone know where the Python 3.4.3 interpreter was installed? (2) Do I need to uninstall Python 2.7.3 (if so, how do I go about doing this) before setting a global environmental variable such as PYTHON_HOME to the location of the installed Python 3.4.3? Thank for taking the time to read this... -- https://mail.python.org/mailman/listinfo/python-list
