[英]Python: Iterating through multiple dictionaries
I've 3 lists, each of them contains dictionaries. 我有3个列表,每个列表都包含字典。 I would get the values for certain keys and want to save the result from the min-Operation of this values.
我将获取某些键的值,并希望保存此值的min-Operation结果。 The following code gives a error: TypeError: list indices must be integers, not dict.
下面的代码给出一个错误:TypeError:列表索引必须是整数,而不是dict。
import numpy as np
import itertools
humidity = [{'high': 90, 'middle': 50, 'low': 10}, {'high': 75, 'middle': 40, 'low': 5} ]
temperature =[{'warm': 35, 'normal': 20, 'cold': 5 }, {'warm': 40, 'normal': 18, 'cold': 10 }]
wind = [{'breeze': 25, 'gale': 100}, {'breeze': 20, 'gale': 90}]
results=[]
for h, t, w in itertools.izip(humidity, temperature, wind):
results.append(np.fmin (humidity[h]['high'], np.fmin( temperature[t]['normal'], wind[w]['breeze']) ) )
But if i wrote in the console(Spyder,python 2.7): 但是如果我在控制台中写了(Spyder,python 2.7):
result = np.fmin (humidity[0]['high'], np.fmin( temperature[0]['normal'], wind[0]['breeze']) )
I get 20 and it's true. 我得到20,这是真的。 But why can I not iterate over the whole dictionaries?
但是,为什么我不能遍历整个词典呢? What is wrong?
怎么了?
Thank you very much for your answers/ideas! 非常感谢您的回答/想法!
You need to reference your h,t,w
variables instead of the original lists 您需要引用您的
h,t,w
变量而不是原始列表
results.append(np.fmin (h['high'], np.fmin( t['normal'], w['breeze']) ) )
as h,t,w
are dictionaries unpacked from your zip, not int
s so you can't use them to index a list 因为
h,t,w
是从zip中解压缩的字典,而不是int
所以您不能使用它们来索引列表
Visiually, humidity[h]['high']
looks like 可见,
humidity[h]['high']
看起来像
humidity[{'high': 90, 'middle': 50, 'low': 10}]['high']
Which does not make sense syntactically 在语法上没有意义
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