None and null?

Question

In sololearner python's >other types> None it says None represent no value 0 or [] , same as NULL in other languages.
But when I tried
if ((None==0) or (None==[])):
print ("true")
there was no output for this hence both are unequal
now I tried in C
if(NULL==0){
printf("true");
}
here I got true.
so how NULL and None are equal and why None!=0 or None!=[]

Answer 1

NULL in C is literally defined as `(void*)0` so it makes sense that NULL == 0 because NULL is zero. In Python, None gets it's own type, NoneType, so it is an object made from a class, and makes sense that it isn't == 0.

It's more of a language design thing, every language handles their nulls differently. To me this shows that C types are very weak. In C, everything is just a number if you squint hard enough, Python has classes and all that.

I think Python is doing the right thing, None is certainly not an array. But C is all about performance and being low-level so it's behaviour makes sense too.

Some interesting nulls:
PHP's `null` is like you described, `null == []`
Javascript has two nulls, `null` and `undefined`
Haskell has `undefined`, but as soon as you even look at it, your program crashes
SQL's NULL is funny because there NULL != NULL

Answer 2

woah....
Thanks for that one
and after NULL!=NULL this definitely None is not similar to other language's NULL xD