apparently, there is no built-in dict method (let’s call it .nestkey) for dynamic key addressing in multi-nested dict structures. this can be demanding when dealing with complex dict structures,
e.g., dic_1.nestkey(list_of_keys_A) = value instead of manually doing dic_1["key_1"]["subkey_2"]["subsubkey_3"] = value.
this is not to be confused with level-1 assignment: dic_1["key_1"] = value_1, dic_2["key_2"] = value_2, ...
i know it’s generally good practice to avoid nested structures, but when necessary, dynamic addressing is powerful,
list_values = [1, 2, 3]; ii = -1
for list_nestedkeys_i in [list_nestedkeys_A, list_nestedkeys_B, list_nestedkeys_C]:
ii += 1; dic.nestkey(list_nestedkeys_i) = list_values[ii]
# endfor
for this purpose, i suggest implement a set/get couple of built-in dict methods, setnest and getnest respectively,
def setnest(self, lis_nestkey, value):
d = self
for key in lis_nestkey[:-1]: # traverse to the second last key
if key not in d:
d[key] = {} # create a nested dict if key doesn't exist
#endif
d = d[key] # move deeper into the dict
#endfor
d[lis_nestkey[-1]] = value # set the value for the final key`
#enddef setnest
def getnest(self, lis_nestkey):
d = self
for key in lis_nestkey[:-1]: # traverse to the second last key
if key not in d:
d[key] = {} # create a nested dict if key doesn't exist
#endif
d = d[key] # move deeper into the dict
#endfor
return d[lis_nestkey[-1]] # get the value for the final key`
#enddef getnest