السؤال 43

For `data = dict(red=4)`, which expression is true because dictionary membership examines keys?

Only `4 in data`
Both `"red" in data` and `4 in data`
Only `"red" in data`الإجابة الصحيحة
Neither expression, because membership is unsupported

الشرح

The membership operator checks the dictionary's keys, making `red` a match and leaving the mapped value 4 irrelevant to this test. Searching values or both sides of each mapping would require a different expression.

الشرح

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