How do I convert a flat JSON key to a dictionary path?-CodePudding

Let's say I have this dictionary:

temp = {"a": {"b": {"c": 123} } }

And I have the following flat JSON key and new value:

flat = "a.b.c"
new_val = 456

I'd like to change the nested dict value with the new one. How do I transform the "a.b.c" to temp["a"]["b"]["c"]?

Note that I don't know the amount of layers in the JSON key, it can be "a.b.c.d.f" and it could be just "a".

CodePudding user response：

You need to iterate the different keys (execpt the last one) to reach the final dict, then update the value

def update_dict_dot(values, key: str, val):
    keys = key.split(".")
    x = values
    for key in keys[:-1]:
        x = x[key]
    x[keys[-1]] = val

temp = {"a": {"b": {"c": 123}}}
print(temp)  # {'a': {'b': {'c': 123}}}
update_dict_dot(temp, "a.b.c", 456)
print(temp)  # {'a': {'b': {'c': 456}}}

CodePudding user response：

Like @rdas mentioned here is the code to do that

temp = {"a": {"b": {"c":{"d": 123} } } }
flat = "a.b.c.d"
new_val = 456
split_val = flat.split('.')
trav_data = temp
for keys in split_val:
    trav_data = trav_data[keys]
print(trav_data)

output