Serhiy Storchaka added the comment:
No, it is a feature.
Python allows you to chain comparison operations, so you can write 0 < x <= 10
which is equivalent to (0 < x) and (x <= 10).
And "is" is a comparison operation. So `3==3 is not True` is equivalent to
`(3==3) and (3 is not True)`
New submission from Wang Bingchao <819576...@qq.com>:
I use python3.7 python3.6 python2.7, and run the following code:
print(3==3 is not True)
print(3==3 is True)
print(3==2 is not True)
print(3==2 is True)
I got the same results as follow:
True
False
False
False
but I don't think it is a
