On 24/10/2011 10:36 AM, Nick Coghlan wrote: > On Mon, Oct 24, 2011 at 8:15 AM, Mark Hammond<skippy.hammond at gmail.com> wrote: >> How about abusing the existing flags for this purpose - eg: >> >> % py -3? >> % py -2.7? > > What does using the magic symbol offer over an explicit separate flag? * The "magic" symbol is somewhat self-documenting - it implies a question. Using --which adds another special case that people would need to understand isn't passed to Python. IOW, I like that there is only 1 special option and that one special option can be expressed in the form of a question. * Simplicity - does "py -2.3 --which" work the same as "py --which -2.3"? If not, that's not at all intuitive. If so, it adds complexity to the launcher and the PEP text. * Extensibility - While I've resisted, I predict that due to popular demand, we will wind up supporting additional arguments which are passed directly to Python (eg, "py -2.3 -W scriptName"). If we did, how would we treat --which when it is specified with additional options? So to turn the question back around - why introduce a new special option when the existing single special option can be leveraged? Are we opening the door to further special options? I guess the key downside to this suggestion is that it doesn't allow you ask where the default Python is without using "-2?" (or maybe just -?) Mark
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4