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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def map_collection(func, collection):
 """ Apply func to each element of a collection, or value of a dictionary. If the value is not a collection, return it unmodified """

    datatype = type(collection)
    if isinstance(collection, Mapping):
        return datatype((key, func(val)) for key, val in collection.items())
    if is_string(collection):
        return collection
    elif isinstance(collection, Iterable):
        return datatype(map(func, collection))
    else:
        return collection