python中删除字典的键值对

 

1、

>>> test1 = dict(key1="aaa",key2="bbb",key3="ccc",key4="ddd") >>> test1 {'key1': 'aaa', 'key2': 'bbb', 'key3': 'ccc', 'key4': 'ddd'} >>> del test1["key2"] >>> test1 {'key1': 'aaa', 'key3': 'ccc', 'key4': 'ddd'} >>> del test1["key1"] >>> test1 {'key3': 'ccc', 'key4': 'ddd'}

 

2、

>>> test1 = dict(key1="aaa",key2="bbb",key3="ccc",key4="ddd") >>> test1 {'key1': 'aaa', 'key2': 'bbb', 'key3': 'ccc', 'key4': 'ddd'} >>> test1.pop("key2") 'bbb'
>>> test1 {'key1': 'aaa', 'key3': 'ccc', 'key4': 'ddd'} >>> test1.pop("key3") 'ccc'
>>> test1 {'key1': 'aaa', 'key4': 'ddd'} >>> test1.popitem() ('key4', 'ddd') >>> test1 {'key1': 'aaa'}