python - Adding a bytearray as a key to a dictionary -

i getting error while adding bytearray key dictionary:

typeerror: unhashable type: 'bytearray'

here code:

str_dict = {} s = bytearray(10)  x in range(0, 10):     value = get_str(s)     str_dict[s] = value

so create bytearray , function get_str(s) updates s , returns 'value'. want add both value , updated s dictionary. above error.

{[1, 2, 3]: 1}  typeerror: unhashable type: 'list'

a dict key has immutable type.

list or bytearray can't use key because mutable , reason can't unique since can changed.

it seems if object __hash__ method can use key though :

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