Python Excel 文件到字典

Question

I would like to create depandant combobox from the Excel file. If the combo1 is selected, the combo2 will be changed depending on Combo1. The input is as below.

City	Name
AA	John
AA	Anne
BB	Sean
BB	Dylan

I have tried to create Pandas dataframe and use to_dict(). But it was not the result I expect.

The expected result {"AA": [["John"], ["Anne"]], "BB": [["Sean"], ["Dylan"]]}.

Thank you.

Edit : Code I have tried. If combo1 "AA" is selected, combo2 will display "John","Anne"

df = (pd.read_excel("test.xls"))

#due to I don't need the "City" && "Name".
df.set_index('City')['Name'].to_dict()  

Output : {'AA': 'Anne', 'BB': 'Dylan'}

df.to_dict("r")

Output : [{'City': 'AA', 'Name': 'John'}, {'City': 'AA', 'Name': 'Anne'}, {'City': 'BB', 'Name': 'Sean'}, {'City': 'BB', 'Name': 'Dylan'}]

df.to_dict("list")

Output : {'City': ['AA', 'AA', 'BB', 'BB'], 'Name': ['John', 'Anne', 'Sean', 'Dylan']}

Answer 1

Try via groupby() , agg() and to_dict() method:

out=df.groupby('City')['Name'].agg(list).to_dict()
#you can also use apply() in place of agg() method

output of out :

{'AA': ['John', 'Anne'], 'BB': ['Sean', 'Dylan']}