问题描述
我有这个列表:
item = ['AAA:60', 'BBB:10', 'CCC:65', 'DDD:70', 'EEE:70']
然后我将这个字符串传递给我:
and then I get this string passed to me:
widget = 'BBB'
我想根据widget在item中找到条目.
I'd like to find the entry in item based on widget.
如果任何列表条目中包含widget，我想在列表中找到条目.我可以使用item[i]并保留循环列表的地方.
I want to find the entry in the list if widget is contained in any of the list entries. Something where I can use item[i] and preserve the list for the loop it will endure.
最终输出将是列表条目本身BBB:10. (在提供的示例中.)
Final output would be the list entry itself, BBB:10. (In the example provided.)
推荐答案
如果您将进行很多此类搜索，请重新访问您的设计.这确实应该是一个字典，其中小部件名称是键，而60、10、65等值是值.您可以使用
If you will be doing lots of this searching, please revisit your design. This really should be a dict where the widget name is the key and the 60, 10, 65, etc. values would be the values. You could construct this from your current list using
item_dict = dict((k,int(v)) for k,v in (i.rsplit(':') for i in item))
然后，您可以轻松地使用以下方法查找值:
Then you could easily lookup values using:
item_dict['BBB'] # 10 (already converted to an int)
in运算符现在可以对存在性进行可预测的测试:
in operator now does predictable test for existence:
'BBB' in item_dict # True
'BB' in item_dict # False
这篇关于根据部分字符串在列表中查找条目的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！