JSON出力の書式設定

Question

キー値のペアデータを持つJSONファイルがあります。私のJSONファイルはこのように見えます。

{ 
    "professors": [ 
     { 
      "first_name": "Richard", 
      "last_name": "Saykally", 
      "helpfullness": "3.3", 
      "url": "http://www.ratemyprofessors.com/ShowRatings.jsp?tid=111119", 
      "reviews": [ 
       { 
        "attendance": "N/A", 
        "class": "CHEM 1A", 
        "textbook_use": "It's a must have", 
        "review_text": "Tests were incredibly difficult (averages in the 40s) and lectures were essentially useless. I attended both lectures every day and still was unable to grasp most concepts on the midterms. Scope out a good GSI to get help and ride the curve." 
       }, 
       { 
        "attendance": "N/A", 
        "class": "CHEMISTRY1A", 
        "textbook_use": "Essential to passing", 
        "review_text": "Saykally really isn't as bad as everyone made him out to be. If you go to his lectures he spends about half the time blowing things up, but if you actually read the texts before his lectures and pay attention to what he's writing/saying, you'd do okay. He posts practice tests that were representative of actual tests and curves the class nicely!" 
       }] 
     { 
     { 
     "first_name": "Laura", 
     "last_name": "Stoker", 
     "helpfullness": "4.1", 
     "url": "http://www.ratemyprofessors.com/ShowRatings.jsp?tid=536606", 
     "reviews": [ 
      { 
       "attendance": "N/A", 
       "class": "PS3", 
       "textbook_use": "You need it sometimes", 
       "review_text": "Stoker is by far the best professor. If you put in the effort, take good notes, and ask questions, you will be fine in the class. As far as her lecture, she does go a bit fast, but her lecture is in the form of an outline. As long as you take good notes, you will have everything you need for exams. She is funny and super nice if you speak with her" 
      }, 
      { 
       "attendance": "Mandatory", 
       "class": "164A", 
       "textbook_use": "Barely cracked it open", 
       "review_text": "AMAZING professor. She has a good way of keeping lectures interesting. Yes, she can be a little everywhere and really quick with her lecture, but the GSI's are useful to make sure you understand the material. Oh, and did I mention she's hilarious!" 
      }] 
    }] 

私は複数のことをやろうとしています。 私はレビューの中で最も言及された['クラス']キーを取得しようとしています。次に、クラス名とそれが言及された時間を取得します。 次に、この方法でフォーマットを出力したいと思います。また、教授の配列の下に。これは教授の情報、例えばCHEM 1A、CHEMISTRY1Aの情報です - それはRichard Saykallyです。

{ 
    courses:[ 
    { 
     "course_name" : # class name 
     "course_mentioned_times" : # The amount of times the class was mentioned 
     professors:[ #The professor array should have professor that teaches this class which is in my shown json file 
     { 
       'first_name' : 'professor name' 
       'last_name' : 'professor last name' 
     } 
    } 

私は最小値を持つところで私のjsonファイルのキー値をソートしたいと思います。これまでのところ、私はISD

if __name__ == "__main__": 
     open_json = open('result.json') 
     load_as_json = json.load(open_json)['professors'] 
     outer_arr = [] 
     outer_dict = {} 
     for items in load_as_json: 

      output_dictionary = {} 
      all_classes = items['reviews'] 
      for classes in all_classes: 
       arr_info = [] 
       output_dictionary['class'] = classes['class'] 
       output_dictionary['first_name'] = items['first_name'] 
       output_dictionary['last_name'] = items['last_name'] 
       #output_dictionary['department'] = items['department'] 
       output_dictionary['reviews'] = classes['review_text'] 
       with open('output_info.json','wb') as outfile: 
        json.dump(output_dictionary,outfile,indent=4) 

Answer 1

を把握することができましたすべてが、私はこのプログラムが何をしたいんだと思う：問題の例の入力を使用して

import json 


with open('result.json') as open_json: 
    load_as_json = json.load(open_json) 

courses = {} 
for professor in load_as_json['professors']: 
    for review in professor['reviews']: 
     course = courses.setdefault(review['class'], {}) 
     course.setdefault('course_name', review['class']) 
     course.setdefault('course_mentioned_times', 0) 
     course['course_mentioned_times'] += 1 
     course.setdefault('professors', []) 
     prof_name = { 
      'first_name': professor['first_name'], 
      'last_name': professor['last_name'], 
     } 
     if prof_name not in course['professors']: 
      course['professors'].append(prof_name) 

courses = { 
    'courses': sorted(courses.values(), 
         key=lambda x: x['course_mentioned_times'], 
         reverse=True) 
} 
with open('output_info.json', 'w') as outfile: 
    json.dump(courses, outfile, indent=4) 

の結果、：

{ 
    "courses": [ 
     { 
      "professors": [ 
       { 
        "first_name": "Laura", 
        "last_name": "Stoker" 
       } 
      ], 
      "course_name": "PS3", 
      "course_mentioned_times": 1 
     }, 
     { 
      "professors": [ 
       { 
        "first_name": "Laura", 
        "last_name": "Stoker" 
       } 
      ], 
      "course_name": "164A", 
      "course_mentioned_times": 1 
     }, 
     { 
      "professors": [ 
       { 
        "first_name": "Richard", 
        "last_name": "Saykally" 
       } 
      ], 
      "course_name": "CHEM 1A", 
      "course_mentioned_times": 1 
     }, 
     { 
      "professors": [ 
       { 
        "first_name": "Richard", 
        "last_name": "Saykally" 
       } 
      ], 
      "course_name": "CHEMISTRY1A", 
      "course_mentioned_times": 1 
     } 
    ] 
}