This is a new feature or bug about operator "- -"?

[daidai21]

print(3 - - 2)
print(3 + + 2)
"""output
5
5
"""

[evanmags]

Can you explain your question a bit more?

The way I understand what I think you are asking is that this isn't a bug at all.

Python will interpret 3--2 as 3 - (-2) subtracting a negative is the same as adding the positive. So this expression evaluates to 3+2. 3++2 evaluates to the exact same thing 3+(+2) or 3+2. so as you can see both are equal to 5

[satwikkansal]

There's already an example in the minor ones section along the similar lines

Given that a is a number, ++a and --a are both valid Python statements but don't behave the same way as compared with similar statements in languages like C, C++, or Java.

>>> a = 5
>>> a
5
>>> ++a
5
>>> --a
5

💡 Explanation:

    There is no ++ operator in Python grammar. It is actually two + operators.
    ++a parses as +(+a) which translates to a. Similarly, the output of the statement --a can be justified.
    This StackOverflow thread discusses the rationale behind the absence of increment and decrement operators in Python.