摘要:
fromkeys函数: ```python # new_dict = dict.fromkeys(keys, default_value) # case1 keys = ['name', 'age', 'city'] default_value = 'Unknown' new_dict = dict 阅读全文
posted @ 2023-07-05 09:48
hacker_dvd
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摘要:
```python # 深浅拷贝 ls = [1, 2, 3, ['python', 'java']] dt = { 'info1': {'id' : 1, 'user' : 'root'}, 'info2': {'id' : 2, 'user' : 'admin'} } ls_new = ls.c 阅读全文
posted @ 2023-07-05 09:32
hacker_dvd
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