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Why does 1+-+1 equal to 0? If there is something mentioned in the documentation about this, could you link to it?

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This

1 + - + 1

Expands to

1 + ( - ( + 1)) == 1 + (- 1) == 1 - 1 == 0

Read more about evaluation order here.

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"Python evaluates expressions from left to right". Thank you.

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