Python: Created Nested Dictionary From List Of Paths

I have a list of tuples the looks similar to this (simplified here, there are over 14,000 of these tuples with more complicated paths than Obj.part) [ (Obj1.part1, {}),

Solution 1:

Unless you prefer to access the specs with dot notation, try putting them into the dictionary directly. In the below code, the name d tracks the innermost dictionary visited on the path:

specs = {}
for path, spec in paths:
    parts = path.split('.')
    d = specs
    for p in parts[:-1]:
        d = d.setdefault(p, {})
    d[parts[-1]] = spec

If you have only two parts per path (ObjN and partN say), you could just do this:

specs = {}
for path, spec in paths:
    [obj, part] = path.split('.')
    specs.setdefault(obj, {})[part] = spec