Is there a good way to merge two objects in Python? Like a built-in method or fundamental library call?
Right now I have this, but it seems like something that shouldn't have to be done manually:
def add_obj(obj, add_obj):
for property in add_obj:
obj[property] = add_obj[property]
Note: By "object", I mean a "dictionary": obj = {}
3 Answers
If obj is a dictionary, use its update function:
obj.update(add_obj)
How about
merged = dict()
merged.update(obj)
merged.update(add_obj)
Note that this is really meant for dictionaries.
If obj already is a dictionary, you can use obj.update(add_obj), obviously.
>>> A = {'a': 1}
>>> B = {'b': 2}
>>> A.update(B)
>>> A
{'a': 1, 'b': 2}
on matching keys:
>>> C = {'a': -1}
>>> A.update(C)
>>> A
{'a': -1, 'b': 2}
