Python: What is the `is` function?
1469
Is there a difference between "==" and "is"?
35788
Python equivalent of MATLAB's "ismember" function
157279
How do you check if a variable is an array in JavaScript?
36929
Why does comparing strings using either '==' or 'is' sometimes produce a different result?
117007
Implicit 'which is', 'which are'
157088
What is return type of `if` statement
119498
Function vs. Object Literal Notaion - is there a diifference?
102826
Easy way to check that a variable is defined in python?
118993
What does "while True" mean in Python?
46987
Does Python have a string 'contains' substring method?
39138
Is this idiom pythonic? (someBool and "True Result" or "False Result")
141759
internal comparison of string and int in python
116415
is keyword in Python
96459
Check if instance is of a type
95734
Check if something is (not) in a list in Python
143939
How do you use: isalnum, isdigit, isupper to test each character of a string?
87312
Using 'is' or 'was' when something is still true