Strip list/dictionaries of empty items recursively

Strip.py

def strip(content):
    """Strip Empty Variables"""
    if (type(content) is list):
        return strip_list(content)
    elif (type(content) is dict):
        return strip_dictionary(content)
    elif (content):
        return content
    else:
        return None

def strip_dictionary(dictionary):   
    """Recursively strip a dictionary of empty items or string"""
    if (type(dictionary) is list):
        return strip_list(dictionary)

    # recursively strip
    dictionary = { k: strip(v) for k, v in dictionary.iteritems()}
    # strip empty items
    return { k: v for k, v in dictionary.iteritems() if v}

def strip_list(lst):
    """Recursively strip a list of empty items or string"""
    if (type(lst) is dict):
        return strip_dictionary(lst)

    # recursively strip list
    lst = map(strip, lst)
    # remove empty items
    return [v for v in lst if v]