valor de clave inversa en el diccionario ejemplo de código de Python

Ejemplo 1: Python de diccionario inverso

inv_map = {v: k for k, v in my_map.items()}

Ejemplo 2: invertir el diccionario de python

inv_map = {v: k for k, v in my_map.items()}

Ejemplo 3: orden inverso de claves dict python

>>> a = {0:'000000',1:'11111',3:'333333',4:'444444'}
>>> a.keys()
[0, 1, 3, 4]
>>> sorted(a.keys())
[0, 1, 3, 4]
>>> reversed(sorted(a.keys()))
<listreverseiterator object at 0x02B0DB70>
>>> list(reversed(sorted(a.keys())))
[4, 3, 1, 0]

Ejemplo 4: como revertir un diccionario en Python

def inverse_dict(my_dict):
    """
    the func get a dictinary and reverse it, the keys become values and the values become keys.
    :param my_dict: the dictinary that need to be reversed.
    :return: a VERY pretty dictionary.
    """
    result_dict = {}
    for key, value in my_dict.items():
        if not value in result_dict.keys():
            result_dict[value] = []
        result_dict[value].append(key)
    return result_dict, print(result_dict)

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