On 26 August 2015 at 20:16, Mike Miller <python-ideas@mgmiller.net> wrote:
The use case is for shell-script replacements, which can be but are often not typically cross-platform. Let's try different examples:
>>> x'version: {$(/usr/bin/xdpyinfo -version)}' # capture 'version: xdpyinfo 1.3.1'
>>> x'display: {$DISPLAY}' # env 'display: :0.0'
This is not an important enough use case to warrant language support, IMO. If you want something like this, there are a lot of tools already available on PyPI: https://pypi.python.org/pypi/invoke/0.10.1 if you want to run sets of command lines, grouped together as "tasks" https://pypi.python.org/pypi/sarge/0.1.4 if you're looking for a shell-like syntax (with cross-platform support for constructs like &&, || etc) http://plumbum.readthedocs.org/en/latest/ if you want access to shell commands from within Python code and probably a host of others. Honestly, this is starting to feel like Perl. Sorry, but I don't like this proposal at all. Paul