Python - 从列表中删除字典，如果键值等于

Question

如何从列表中删除链接列表b中包含链接值的所有字典？

a = [{'link':'http://example.com/1/', 'id': 1}, {'link':'http://example.com/2/', 'id': 2}] 
b = ['http://example.com/2/', 'http://example.com/3/'] 

一个应该是：

a = [{'link':'http://example.com/1/', 'id': 1}] 

Answer 1

a = [x for x in a if x['link'] not in b] 

演示：

>>> a = [{'link':'http://example.com/1/', 'id': 1}, {'link':'http://example.com/2/', 'id': 2}] 
>>> b = ['http://example.com/2/', 'http://example.com/3/'] 
>>> a = [x for x in a if x['link'] not in b] 
>>> a 
[{'link': 'http://example.com/1/', 'id': 1}]