将带有值的新键列存储为字典列表中的值列表？

data = [("key1", "value1"), ("key2", "value2"), ("key1", "value3"), ("key3", "value4")]

dict_list = []
for key, value in data:
    found = False
    for d in dict_list:
        if d["value"] == value:
            d["keys"].append(key)
            found = True
            break
    if not found:
        dict_list.append({"value": value, "keys": [key]})

print(dict_list)

[{'value': 'value1', 'keys': ['key1']}, {'value': 'value2', 'keys': ['key2']}, {'value': 'value3', 'keys': ['key1']}, {'value': 'value4', 'keys': ['key3']}]