Why does Pycharm's inspector complain about "d = {}"?
When initializing a dictionary with d = {} Pycharm's code inspector generates a warning, saying
This dictionary creation could be rewritten as a dictionary literal.
If I rewrite it d = dict() the warning goes away. Since {} already is a dictionary literal, I'm pretty sure the message is erroneous. Furthermore, it seems like both d = {} and d = dict() are valid and Pythonic.
This related question seems to conclude that the choice is just a matter of style/preference: differences between "d = dict()" and "d = {}"
Why would Pycharm complain about d = {}?
UPDATE:
Mac nailed it. The warning actually applied to multiple lines, not just the one that was flagged.
Pycharm seems to look for a sequence of consecutive statements where you initialize a dictionary and then set values in the dictionary. For example, this will trigger the warning:
d = {}
d['a'] = 1
But this code will not:
d = {}
pass
d['a'] = 1
Answer
What is the following code to your dictionary declaration?
I think pycharm will trigger the error if you have something like:
dic = {}
dic['aaa'] = 5
as you could have written
dic = {'aaa': 5}
BTW: The fact that the error goes away if you use the function doesn't necessarily mean that pycharm believes dict() is a literal. It could just mean that it doesn't complain for:
dic = dict()
dic['aaa'] = 5
HTH!