Python for Programmers: Augmented and Chained Assignment

Welcome to the Augmented and Chained Assignment lesson!

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Expressions like x = x + 1 are common, so Python has a dedicated "augmented assignment" operator. name += value does the same thing as name = name + value.
>
x = 3
x += 5
x
Result:
8
There are also equivalents for other mathematical operators: *=, -=, and /=. However, Python doesn't have the x++ operator, which adds 1 to x in many other languages. Trying to use it raises a SyntaxError exception.
(You can type error when a code example will cause an error.)

x = 3
x++
x

SyntaxError: invalid syntax (<string>, line 2)

We can also assign the same value to multiple variables in one line. This convenient feature is called "chained assignment."
>
x = y = 3
x += 1
y += 2
x + y
Result:
9