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x = 10
print(x)  # 杈撳嚭 10

del x

print(x)  # 鎶ラ敊锛歂ameError: name 'x' is not defined

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濡傛灉鎯冲垹闄ゅ彉閲忓強鍏跺搴旂殑鏁版嵁锛屽彲浠ヤ娇鐢?code>del鍏抽敭瀛楋紝鐒跺悗鍐嶈缃负None锛?/p>

x = [1, 2, 3]
print(x)  # 杈撳嚭 [1, 2, 3]

del x

print(x)  # 鎶ラ敊锛歂ameError: name 'x' is not defined

x = None

print(x)  # 杈撳嚭 None

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