使用字典值循环浏览字典中的列表

Question

Given a dictionary as such

grouped_data = {"results":[{"id": 101, "name": toto}, {"id": 102, "name": cool}] }

It's a dict that has a list in which it has dictionaries

Hope I'm not confusing you ;), how can I get the results list and loop through each dictionary inside the list to compare the id between them with an if statement.

Answer 1

To get the list:

resultList = grouped_data["results"]

Iterate through the list to get the dictionaries:

for dic in resultList:
    # use dic

To get values inside dic :

 for dic in resultList:
     for key,value in dic.iteritems():
         # use key and value     

To access the id key, use:

 for dic in resultList:
     if dic['id'] == somevalue:
        # do_something    

Answer 2

If you want to " loop through each dictionary inside the list to compare the id between them with an if statement" , this is one way to do it. Example if statement below:

for i in grouped_data["results"]:
    if i['id'] > 101:
        print (i)

Output:

{'id': 102, 'name': 'cool'}

BTW: You have to convert toto and cool to string unless they are variables which you have declared in your code already.

Answer 3

Not sure what you mean by 'compare the id between them with an if statement'. Many ways to interpret it but here is something that you might use:

print (x for x in grouped_data['results'] if x['id'] > 101).next()

Output:

{'id': 102, 'name': 'cool'}