Python: Differences between the += operator and append
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When is "i += x" different from "i = i + x" in Python?
7837
What is the best way to add two numbers without using the + operator?
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string = string + int: What's behind the scenes?
19121
How does the String class override the + operator?
126174
What is the difference between != and  operators?
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What is the difference between operator "=" and "==" in Bash?
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What does the  operator do in python?
48026
What's the difference between X = X++; vs X++;?
31103
What's the difference between array_merge and array + array?
5567
What is the difference between ++i and i++?
142576
Why does [1].append(2) evaluate to None instead of [1,2]?
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How is + as an infix operator associated with Plus?
111616
Why avoid increment ("++") and decrement ("--") operators in JavaScript?
61273
What do these ( += , -= , *= , /= ) Operators Mean?
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How do the post increment (i++) and pre increment (++i) operators work in Java?
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The difference between ++Var and Var++
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+ operator before expression in javascript: what does it do?