nested

问题 I have this dataframe called "leads" I got from saving the output of an SFDC SOQL into a dataframe. I have been trying to expand column "Leads__r.record" Company Month Amount Leads__r.done Leads__r.record Leads__r.totalSize 0 A1 September 500000 True [{u'Id': u'Q500, u'Company': u'... 1.0 1 B1 December 16200 True [{u'Id': u'Q600', u'Company': u'... 1.0 2 C1 December 35000 True [{u'Id': u'Q700', u'Company': u'... 1.0 3 D1 December 16200 True [{u'Id': u'Q800', u'Company': u'... 1.0 4 E1

问题 I am trying to return a list of categories for a business, and for each category I would like to list all the items related to the category. I was returning all of my items, not by category, but I have decided I want them sorted by category. This is what I have tried (among other attempts as well) I simply am having trouble getting the items into there categories. This is my latest attempt In my models.py I have Business(models.Model): name = models.CharField(max_length=100) address = models

问题 If I have the following dictionary: dict_a = {'a': {'x': 0, 'y': 1, 'z': 2}, 'b': {'x': 3, 'y': 4, 'z': 5}} What is the best way to switch the structure of the dictionary to: dict_b = {'x': {'a': 0, 'b': 3}, 'y': {'a': 1, 'b': 4}, 'z': {'a': 2, 'b': 5}} 回答1: With default dictionary Given the dictionary is always two levels deep, you can do this with a defaultdict : from collections import defaultdict dict_b = defaultdict(dict) for k,v in dict_a.items(): for k2,v2 in v.items(): dict_b[k2] [k]

问题 If I have the following dictionary: dict_a = {'a': {'x': 0, 'y': 1, 'z': 2}, 'b': {'x': 3, 'y': 4, 'z': 5}} What is the best way to switch the structure of the dictionary to: dict_b = {'x': {'a': 0, 'b': 3}, 'y': {'a': 1, 'b': 4}, 'z': {'a': 2, 'b': 5}} 回答1: With default dictionary Given the dictionary is always two levels deep, you can do this with a defaultdict : from collections import defaultdict dict_b = defaultdict(dict) for k,v in dict_a.items(): for k2,v2 in v.items(): dict_b[k2] [k]

问题 I am trying to create a list object, with the iterator class nested inside to understand how it works. In some method, I am trying to return an iterator object but it doesn't work. I created an example to show the problem : // CLASS A template <class T> class A { public: class B; A(){} }; // CLASS B template <class T> class A<T>::B { private: int varB; public: B(B& b); B(const int&); B returnThis(); }; template <class T> A<T>::B::B(const int& value) { varB = value; } template <class T> A<T>:

问题 I am trying to create a list object, with the iterator class nested inside to understand how it works. In some method, I am trying to return an iterator object but it doesn't work. I created an example to show the problem : // CLASS A template <class T> class A { public: class B; A(){} }; // CLASS B template <class T> class A<T>::B { private: int varB; public: B(B& b); B(const int&); B returnThis(); }; template <class T> A<T>::B::B(const int& value) { varB = value; } template <class T> A<T>:

问题 Background The application is of the following structure: . ├── R │ ├── mod_observationSelector.R │ ├── mod_previewTable.R │ └── mod_summaryTable.R └── app.R With the files fulling the respective functions: mod_observationSelector.R - provides an updateSelectInput mechanism facilitating selction of integere or real columns in mtcars data mod_previewTable.R - generates head for selected column mod_summaryTable.R - generates summary for selected column Design assumptions mod_observationSelector

问题 Background The application is of the following structure: . ├── R │ ├── mod_observationSelector.R │ ├── mod_previewTable.R │ └── mod_summaryTable.R └── app.R With the files fulling the respective functions: mod_observationSelector.R - provides an updateSelectInput mechanism facilitating selction of integere or real columns in mtcars data mod_previewTable.R - generates head for selected column mod_summaryTable.R - generates summary for selected column Design assumptions mod_observationSelector

问题 I wanna create nested entity with DIH using SOLR 6.x i read Defining nested entities in Solr Data Import Handler and jira https://issues.apache.org/jira/browse/SOLR-5147 what i did Schema.xml <fields> <field name="variantList" type="string" indexed="true" stored="true" /> <field name="variantList.variants" type="string" multiValued="false" required="false"/> <field name="variantList.stockMinimum" type="int" multiValued="false" required="false"/> <field name="variantList.stockOnHand" type="int

问题 I have an assignment to create a 10 by 10 table in Python and I'm using the end "\t" within my print function to prevent it from creating a new line. But, I need it to start a new line after of course 10 characters. How can I make it do that? Here's my code: product = 0 for x in range(1,11): for y in range(1,11): product = x * y print(product, end="\t") I need it to look something like this: 1 2 3 4 5 6 ... 2 4 6 8 10 12 ... 3 6 9 12 15 18 ... 回答1: This is using alignement options from the