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I want to build a query for sunburnt(solr interface) using class inheritance and therefore adding key - value pairs together. The sunburnt interface takes keyword arguments. How can I transform a dict ({'type':'Event'}) into keyword arguments (type='Event')?
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“ kwargs ” stands for keyword arguments. It is used for passing advanced data objects like dictionaries to a function because in such functions one doesn't have a clue about the number of arguments, hence data passed is be dealt properly by adding “**” to the passing type.
The special syntax **kwargs in function definitions in python is used to pass a keyworded, variable-length argument list. We use the name kwargs with the double star. The reason is that the double star allows us to pass through keyword arguments (and any number of them).
**kwargs allows us to pass a variable number of keyword arguments to a Python function. In the function, we use the double-asterisk ( ** ) before the parameter name to denote this type of argument.
The ** operator is used to pack and unpack dictionary in Python and is useful for sending them to a function.
Use the double-star (aka double-splat?) operator:
func(**{'type':'Event'}) is equivalent to
func(type='Event') ** operator would be helpful here.
** operator will unpack the dict elements and thus **{'type':'Event'} would be treated as type='Event'
func(**{'type':'Event'}) is same as func(type='Event') i.e the dict elements would be converted to the keyword arguments.
FYI
* will unpack the list elements and they would be treated as positional arguments.
func(*['one', 'two']) is same as func('one', 'two')
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