utilities.basic

Basic python utility functions

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get_item

def get_item(
    l:Sequence, # Sequence to get item of
    i:int, # Index of item to get
    default:Optional=None, # Default value to return if sequence does not contain item at index
)->Any: # Item or default value

Return item at index i from sequence l or default if item does not exist.

get_item('abc', 1)

'b'

get_item('abc', 4, "foo")

'foo'

str(get_item('abc', 4))

'None'

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filter_args

def filter_args(
    fnc:Callable, # Function to test keyword arguments against
    **kwargs
)->dict: # Keyword arguments defined in signature of `fnc`

Return only keyword arguments defined in signature of function fnc.

filter_args(get_item, default=3, foo='bar')

{'default': 3}

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filter_out_args

def filter_out_args(
    fnc:Callable, # Function to test keyword arguments against
    **kwargs
)->dict: # Keyword arguments not defined in signature of `fnc`

Return only keyword arguments not defined in signature of function fnc.

filter_out_args(get_item, default=3, foo='bar')

{'foo': 'bar'}