format the output from a nested dictionary.

[bowlofred]

If you want formatting, I prefer using a formatting package. tabulate has worked well for me.

from tabulate import tabulate

currentuser ={'root':{'uid': 0,'username': 'root' ,'shell': '/bin/bash'},
        'daemon': {'uid': 1,'username': 'daemon' ,'shell': '/usr/sbin/nologin'},
        'bin': {'uid': 2,'username': 'bin', 'shell':'/usr/sbin/nologin'},
        'nsa': {'uid': 1000,'username': 'nsa', 'shell': '/bin/bash'}}


columns = list(next(iter(currentuser.values())).keys())
print(tabulate([x.values() for x in currentuser.values()], headers=columns, tablefmt="presto"))

Output:
   uid | username   | shell
-------+------------+-------------------
     0 | root       | /bin/bash
     1 | daemon     | /usr/sbin/nologin
     2 | bin        | /usr/sbin/nologin
  1000 | nsa        | /bin/bash