CODEWITHSUNDEEP
pythondictionarykeyword-argument
Menryck
Menryck

Reputation: 189

Using kwargs to add key and value in a dictionary

I'm discovering kwargs and want to use them to add keys and values in a dictionary. I tried this code :

def generateData(elementKey:str, element:dict, **kwargs):
    for key, value in kwargs.items():
        element[elementKey] = {
           "%s": "%s" %(key,value)
        }
    return element

However, when I use it, I have a TypeError :

*not all arguments converted during string formatting

I tried with

element = generateData('city', element, name = 'Paris', label = 'Paris', postcode = '75000')

and I wanted as result:

element = {'city': {'name': 'Paris', 'label': 'Paris', 'postcode': '75000'}}

Would you know where is my error ?

Upvotes: 2

Views: 1348

Answers (2)

Ujjawal shah
Ujjawal shah

Reputation: 1

This also works:

def generate_data(elementKey: str, **kwargs):
    y = dict()
    y[elementKey] = kwargs
    return y


kwargs = {'name' : 'Paris'  , 'label' : 'Paris', 'postcode':'75000'}
element = generate_data('city', **kwargs )
print(element)

Upvotes: 0

Dani Mesejo
Dani Mesejo

Reputation: 61910

Just do, since kwargs is already a dictionary:

def generate_data(elementKey: str, element: dict, **kwargs):
    element[elementKey] = kwargs
    return element


element = {}
element = generate_data('city', element, name='Paris', label='Paris', postcode='75000')
print(element)

Output

{'city': {'name': 'Paris', 'label': 'Paris', 'postcode': '75000'}}

Upvotes: 4

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