Create Dynamic nested Dictionaries

[Gribouillis]

I am curious if os now uses PyFilesystem as there are new commands like os.fspath that use the fs prefix.

No Python itself doesn't depend on a third party module such as PyFileSystem. The role of PyFileSystem is to offer a unified API for different objects, so that the same code can be used in different contexts. Consider a slightly better version of the above code

from dictfs import DictFs

def fill(root):
    d = root.makedirs('Boston/Restaurants/Spoke Wine Bar')
    d.settext('Addr1', '89 Holland St')
    d.settext('City', 'Sommerville')
    d.settext('ZipCode', '02144')
    d.settext('Phone', '617-718-9463')
    d = root.makedirs('Boston/Restaurants/Highland Kitchen')
    d.settext('Addr1', '150 Highland Ave')
    d.settext('City', 'Sommerville')
    d.settext('ZipCode', '02144')
    d.settext('Phone', '617-625-1131')

def main():
    with DictFs() as root:
        fill(root)
        root.tree()

if __name__ == '__main__':
    main()

Output:
└── Boston
    └── Restaurants
        ├── Highland Kitchen
        │   ├── Addr1
        │   ├── City
        │   ├── Phone
        │   └── ZipCode
        └── Spoke Wine Bar
            ├── Addr1
            ├── City
            ├── Phone
            └── ZipCode

This code acts in memory on a python dictionary. I only need to replace DictFs() by fs.osfs.OSFS('/tmp') or fs.tarfs.TarFS('foo.tgz', write=True) to have the same code operate on a directory on disk or a gunzipped tar file. The same code can manipulate a remote FTP or dropbox hierarchy.

Of course, it may remain some filesystem specific code, for example if I want to call root.as_dict(), which is defined only for my DictFs class, but clearly, using the unified API, it would be quite easy to define a function as_dict that would apply to any of these filesystems. PyFileSystem is a great step towards code reusability!