Assignment Operators

= plus augmented forms like += -= *= /= //= %= **= &= |= and the walrus :=.

Beginner

count += 1
mask <<= 2
if (n := len(data)) > 10:     # walrus: assign inside an expression (3.8+)
    print(f"{n} items")

For mutable objects, a += b modifies a in place (lists extend), while a = a + b creates a new object.

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