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Editorial Team
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Asked: 2026-06-01T04:24:32+00:00

I have a dict which contains some lists and some dicts, as illustrated below.

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I have a dict which contains some lists and some dicts, as illustrated below.

What is the most pythonic way to iterate over the dict and print out the name and address pairs for each top level dict key?

Thanks

{
    'Resent-Bcc': [],
    'Delivered-To': [],
    'From': {'Name': 'Steve Watson', 'Address': 'steve.watson@example.org'},
    'Cc': [],
    'Resent-Cc': [],
    'Bcc': [ {'Name': 'Daryl Hurstbridge', 'Address': 'daryl.hurstbridge@example.org'},
             {'Name': 'Sally Hervorth', 'Address': 'sally.hervorth@example.org'},
             {'Name': 'Mike Merry', 'Address': 'mike.merry@example.org'},
             {'Name': 'Jenny Callisto', 'Address': 'jenny.callisto@example.org'}
           ],
    'To': {'Name': 'Darius Jedburgh', 'Address': 'darius.jedburgh@example.org'}
}
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1 Answer

  1. Editorial Team

    One way is to change the lone dicts into a list containing the dict. Then all the entries can be treated the same

    >>> D = {
...     'Resent-Bcc': [],
...     'Delivered-To': [],
...     'From': {'Name': 'Steve Watson', 'Address': 'steve.watson@example.org'},
...     'Cc': [],
...     'Resent-Cc': [],
...     'Bcc': [ {'Name': 'Daryl Hurstbridge', 'Address': 'daryl.hurstbridge@example.org'},
...              {'Name': 'Sally Hervorth', 'Address': 'sally.hervorth@example.org'},
...              {'Name': 'Mike Merry', 'Address': 'mike.merry@example.org'},
...              {'Name': 'Jenny Callisto', 'Address': 'jenny.callisto@example.org'}
...            ],
...     'To': {'Name': 'Darius Jedburgh', 'Address': 'darius.jedburgh@example.org'}
... }
>>> L = [v if type(v) is list else [v] for v in D.values()]
>>> [(d["Name"], d["Address"]) for item in L for d in item ]
[('Steve Watson', 'steve.watson@example.org'), ('Daryl Hurstbridge', 'daryl.hurstbridge@example.org'), ('Sally Hervorth', 'sally.hervorth@example.org'), ('Mike Merry', 'mike.merry@example.org'), ('Jenny Callisto', 'jenny.callisto@example.org'), ('Darius Jedburgh', 'darius.jedburgh@example.org')]

    Or the one liner version

    [(d["Name"], d["Address"]) for item in (v if type(v) is list else [v] for v in D.values())]
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