Python's += operator and lists
67678
When is "i += x" different from "i = i + x" in Python?
107490
Python String and Integer concatenation
34707
How do you check if there are any equal arguments(even sublist) in a list?
38967
What is the precedence of the + (plus) operator in Java?
109567
How does operator  work when comparing two strings?
17863
How to sum over a List
13243
Subtracting 2 lists in Python
28849
using list operator "in" with floating point values
93418
+= operator appears to modify frozen string
63293
how can i do math operation on list elements in python?
61273
What do these ( += , -= , *= , /= ) Operators Mean?
59348
The difference between ++Var and Var++
21903
What is the difference between [0-9]+ and [0-9]++?
73228
What does the [0]*x syntax do in Python?
2203
String concatenation: concat() vs "+" operator
78499
How is Python's List Implemented?
19121
How does the String class override the + operator?