How can I merge two Python dictionaries in a single expression? For dictionaries x and y, their shallowly-merged dictionary z takes values from y, replacing those from x. In Python 3.9.0 or greater (released 17 October 2020, PEP-584, discussed here):
By default, keys in dictionaries are unique, so if the dict with the same id is being added to this new dictionary, it overwrites previous dict with the same id. .values() returns a view object that displays a list of all the values in the dictionary - here a list of whole unique (by id) dicts.
@IainSamuelMcLeanElder .to_dict returns your dataframe in one of several formats, depending what you specify. ('records') returns a list of dictionaries where each column is a dictionary, and .to_dict('index') returns a dictionary of dictionaries, with top-level keys being the index values, and the nested dictionary being column:value pairs. Depending on how you export your csv, you choose the ...
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