Provide reuse to ConfigParser files.
config-enhance adds re-use capabilities to ConfigParser style config files.
It introduces a reserved key: ‘<<=’
The ‘<<=’ key should be assigned a list of enhancements like:
[section] <<= <other1 +other2 <other3 -other4
Each enhancement is composed of an operator followed by a section name. The operators are:
- ‘<’ : mix things in from another section if they don’t already exist
- ‘+’ : pull config from another section, overwrite settings in the current section if there is a clash.
- ‘-‘ : remove config items that exist in the source section from this section
You can use it like this:
from config_enhance import enhance cp = ConfigParser (file ("my.cfg")) enhance(cp)
Suppose that my.cfg contains content like:
[common] flup = 1.0 requests = 2.0 [tes_100] <<= <common requests = 5.0 tornado = 6.0 [dev_tes_common] tornado = 6.0d [dev_unpin] flup = unpin [dev_tes_100] <<= <tes_100 +dev_tes_common -dev_unpin
After running enhance, ‘cp’ will be modified to contain:
[common] flup = 1.0 requests = 2.0 [tes_100] flup = 1.0 requests = 5.0 tornado = 6.0 [dev_tes_common] tornado = 6.0d [dev_unpin] flup = unpin [dev_tes_100] requests = 5.0 tornado = 6.0d
config-enhance is useful when managing version requirement sections in buildout. Buildout already contains limited reuse features through the ‘<=’ idiom. But, version management is easier with an extended set.
Other docs of interest
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