dictionary
MetPy Mondays
`#190 - Combining Dictionaries and the New | Operator : Unidata Developer's Blog
https://www.unidata.ucar.edu/blogs/developer/en/entry/metpy-mondays-190-combining-dictionaries
code:python
a.update(b)
{**a, **b}
a|b # > python 3.9
See also
PermaDict
defaultdict