inverse.setdefault(val, []).append(key)what function does this sentence achieve? it is easy to understand using one method, but using two methods in a row. I don"t understand how the value is passed.
the following is the complete code
def invert_dict(d):
inverse = {}
for key in d:
val = d[key]
inverse.setdefault(val, []).append(key)
return inverse inverse.setdefault (val, []) .append (key)
it is equivalent to:
>>> d = {}
>>> d.setdefault(1, []).append(2)
>>> print(d)
{1: [2]}Previous: Handlebar template engine
dict1 = { "system.cpu.user.pct": { "value": 12.83 }, "system.load.1": { "value": 0.33 } } dict2 = { "system": { "...
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