direg Overview

direg lets you maintain arbitrary registry data (in the form of python dictionaries that can be “merged” in a logical way (think: global config -vs- user config). With a small amount of work, it is possible to replace hardcoded values with easily-maintainable and flexible registry entries.

Suppose we have a file at /my/path/registry.py with the following contents.

data = {
    'one.Foo.meth.somevar': 26804,
    'one.Foo.somevar': 24742,
    'one.myfunc.somevar': 16834,
    'one.outer.inner.somevar': 7678,
}

Then, in some module one, we can do the following:

one.py

from direg import get_value, registries
# Load the registry with the above data. Note that this could take place in another module and could include an
# arbitrary number of registry files.
registries.append('/my/path/registry.py')

class Foo:
    somevar = get_value('somevar')  # will be 24742
    def meth(self):
        return get_value('somevar')

f = Foo()
f.meth()  # will return 26804
f.somevar  # 24742
Foo.somevar  # also 24742

def myfunc():
    somevar = get_value('somevar')
    return somevar

myfunc()  # will be 16834