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Python FTW: Under the Hood

Same Operands, Different Story!

Learn how Python's += operator can behave differently than = when modifying objects like lists. Understand how in-place changes affect references and avoid common surprises in your code.

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No one promised you that the operands would not trick you.

1.

What do you think the output of this code will be?

Python 3.5
a = [1, 2, 3, 4]
b = a
a = a + [5, 6, 7, 8]
print(a)
print(b)

2.

Do you think the output will be the same as ...