Returns a dict from a dict list given a matching key value pair and returns None if no matches.

getdict.py

def get_dict_from_list(l, k, v):
    """
    Returns a dict from a dict list given a matching key value pair 
    and returns None if no matches.
    
    >>> test = [{'A': 'a1', 'B': 'b1'}, {'B': 'b2', 'A': 'a2', }]
    >>> get_dict_from_list('A', 'a2')
    {'B': 'b2', 'A': 'a2', }
    
    """
    return next((item for item in l if item.get(k) == v), None)