Hello, I'm a newbie.
What's the defference between
>>>a=-6; b=-6; a is b
>>>True
and
>>>a=-6
>>>b=-6
>>>a is b
>>>False
?
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Sure, I understand that "is" is not "==", cause "is" just compares id(a)==id(b).
I have a win32 CPython and the range of "singletons" is from -5 to 256 on my
machine.
I am asking about what happens in Python interpreter? Why is there a difference
between running one line like "a=1;b=1" and two
Python 2.7.1 (downloaded from python.org a week ago)
You see, if I save this to a file and then run from CMD: "python test1.py" the
result will be the same: "True"
When I use IDLE or IPython or DreamPie or maybe something else then result is
not the same. So maybe as Chris Angelico said it is t
I want to make a function that is called only once per one argument. I mean I
want to store data of function calling to prevent calling it again if there is
no need.
How to make it? For example I can make a global list that just consist of
tuples
[(arg1, res1), (arg2, res2), ...]. Ok, how to se
Thanks.
It seems that dictionary is a sorted list of tuples, so the procedure of
searching an element is quite quick.
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