基于条件删除字典中的条目 [英] deleting entries in a dictionary based on a condition
问题描述
我有一个名称为关键字的字典,(年龄,出生日期)元组为这些键的值。例如
dict = {'Adam':(10,'2002-08-13'),
'Eve ':(40,'1972-08-13')}
我想删除所有的键年龄> 30岁,价值元组,我该怎么做?我正在使用 dict [name] [0]
其中dict是我的字典访问每个密钥的年龄。
通常的方法是创建一个仅包含您要保留的项目的新字典:
new_data = {k:v for k,v in data.iteritems()if v [0] <= 30}
在Python 3.x中,使用 items()
而不是 iteritems()
p>
如果您需要更改原来的字典,可以使用
-loop:
for k,v in data.items():
if v [0]> 30:
del data [k]
在Python 3.x中,使用 list(data.items())
而不是 data.items()
。
I have a dictionary with names as key and (age, Date of Birth) tuple as the value for those keys. E.g.
dict = {'Adam' : (10, '2002-08-13'),
'Eve' : (40, '1972-08-13')}
I want to delete all the keys which have age > 30 for their age in value tuple, how can I do that? I am accessing age of each key using dict[name][0]
where dict is my dictionary.
The usual way is to create a new dictionary containing only the items you want to keep:
new_data = {k: v for k, v in data.iteritems() if v[0] <= 30}
In Python 3.x, use items()
instead of iteritems()
.
If you need to change the original dictionary in place, you can use a for
-loop:
for k, v in data.items():
if v[0] > 30:
del data[k]
In Python 3.x, use list(data.items())
instead of data.items()
.
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