variable = None in Python? What does it mean?
2193
What is a None value?
106983
Python `if x is not None` or `if not x is None`?
155899
How can I find out the variable name in python?
8309
Does Python have a ternary conditional operator?
80361
Any program or trick to find the definition of a variable?
50416
What does the >?= operator mean?
91006
Why can I refer to a variable outside of an if/unless/case statement that never ran?
153980
Python: My function returns "None" after it does what I want it to
67678
When is "i += x" different from "i = i + x" in Python?
39459
Why is '' > 0 True in Python 2?
97594
Python Script returns unintended "None" after execution of a function
151816
What is the semantics of 'is' operator in Python?
76210
What does it mean if a Python object is "subscriptable" or not?
112316
Why does my recursive function return None?
909
What is this shell/Bash syntax: someVariable=someValue someCommand
145497
What does the  operator do in python?
109083
Python: Checking if a 'Dictionary' is empty doesn't seem to work