The following code does not cause an error, but it has no effect:
d = {"name": "Joey"}
d["age"]: 1
Notice that there's a typo, it should be = rather than :, how does python understand it?
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Quan Zhou
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1Does this answer your question? [What are variable annotations?](https://stackoverflow.com/questions/39971929/what-are-variable-annotations) – MisterMiyagi Dec 22 '20 at 09:38
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`d["age"] = 1` ;) – bherbruck Dec 22 '20 at 18:16