技术问答python涓璸op鍑芥暟鐨勫姛鑳芥湁鍝簺 - 扬州沐宇科技

鍦≒ython涓紝`pop()` 鍑芥暟閫氬父鐢ㄤ簬浠庡瓧鍏镐腑鍒犻櫎鎸囧畾閿紙key锛夊苟杩斿洖鐩稿簲鐨勫€笺€傚叿浣撴潵璇达紝`pop()` 鍑芥暟鏈変互涓嬪姛鑳斤細

1. 鍒犻櫎鎸囧畾閿苟杩斿洖瀵瑰簲鐨勫€硷細

```python

my_dict = {'a': 1, 'b': 2, 'c': 3}

value = my_dict.pop('b')

print(value) # 杈撳嚭: 2

print(my_dict) # 杈撳嚭: {'a': 1, 'c': 3}

```

2. 鎻愪緵榛樿鍊煎弬鏁帮紝闃叉鍑虹幇 KeyError锛?/p>

```python

my_dict = {'a': 1, 'b': 2, 'c': 3}

value = my_dict.pop('d', 'Key not found')

print(value) # 杈撳嚭: 'Key not found'

```

3. 濡傛灉涓嶆彁渚涢粯璁ゅ€煎弬鏁颁笖鎸囧畾鐨勯敭涓嶅瓨鍦紝鍒欎細寮曞彂 KeyError 寮傚父锛?/p>

```python

my_dict = {'a': 1, 'b': 2, 'c': 3}

value = my_dict.pop('d') # KeyError: 'd'

```

鎬讳箣锛宍pop()` 鍑芥暟涓昏鐢ㄤ簬浠庡瓧鍏镐腑鍒犻櫎鎸囧畾閿苟杩斿洖鐩稿簲鐨勫€硷紝鍚屾椂涔熷彲浠ユ彁渚涢粯璁ゅ€间互闃叉 KeyError 寮傚父銆?/p>