Why does the operator 'is' behave differently for the cases of single-valued variables and lists?
4419
"is" operator behaves unexpectedly with integers
70585
Why does Assuming[x > 0, TrueQ[x > 0]] return False?
35549
What is the difference between the | and || or operators?
132239
Why is the solution single-valued?
41331
List vs. int assignment - "Every variable is a pointer"
134742
String comparison in Python: is vs. ==
39781
Why does the is operator return false when given null?
50629
Confusing [...] List in Python: What is it?
49878
Why does `a == x or y or z` always evaluate to True?
41022
Why does the ternary operator unexpectedly cast integers?
11189
'is' operator behaves differently when comparing strings with spaces
21834
In Python, how do I determine if an object is iterable?
110513
Using the ternary operator for multiple operations
19249
Type Checking: typeof, GetType, or is?
152857
Order of evaluation of elements in list-initialization
13673
Why don't Java's +=, -=, *=, /= compound assignment operators require casting?
23881
Python's in (__contains__) operator returns a bool whose value is neither True nor False