如何转换此dict输出？

my_dict = {"key1": "value1", "key2": "value2", "key3": "value3"}
output_str = str(my_dict)
print(output_str)

{'key1': 'value1', 'key2': 'value2', 'key3': 'value3'}

import json

my_dict = {"key1": "value1", "key2": "value2", "key3": "value3"}
output_json = json.dumps(my_dict)
print(output_json)

{"key1": "value1", "key2": "value2", "key3": "value3"}

import pickle

my_dict = {"key1": "value1", "key2": "value2", "key3": "value3"}
output_bytes = pickle.dumps(my_dict)
print(output_bytes)

b'\x80\x04\x95;\x00\x00\x00\x00\x00\x00\x00}\x94(\x8c\x04key1\x94\x8c\x06value1\x94\x8c\x04key2\x94\x8c\x06value2\x94\x8c\x04key3\x94\x8c\x06value3\x94u.'