Question 109072 in Json Question posted in
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Iterate through dict hierarchy in json with python loop

Okay I did some reading and should now rephrase my question:

I have restructured my josn to a tree like dict:

[{
  "id": "Bosniak",
  "system": 
          {
          "0": "Wurde ein Nieren Protokoll gemacht, ist <25% der Lesion KM aufnehmend, und ist kein Fettgewebe zu sehenn(1) alles trifft zu?n(2) trifft nicht zu",
          "1": {"0": "KM-aufnehmende Lesion >3cm, heterogene Lesion, viel Verkalkung?n(1) mind. eins davon trifft zun(2) trifft nicht zu",
                "1":"Bosniak1", "2":"Bosniak II"},
          "2": {"0": "Was ist zu sehen?n(1) >25% KM-aufnehmend oder fettign(2) homogene Lesion 20 - 30 HU", 
                "1": "Bosniak IV", "2":"Bosnaik V"}
          }         

}]

In a prior step I call an id in my dict, like "Bosniak" in this example. Now I want to iterate through the "system" key, Q&A-like via inputs through my console, until I have reached the end of a list (i.e. "Bosniak II")

I have this loop:

i = "1" #that is the index for the item with id "Bosniak" in my dict
while True:
    qloop = input("Select an option: ", )
    #probably here I need a recursive function 
    #or whatever where I can dynamically change my path,
    # so that I can call items in my json dict until the 
    #end of a nested layer is reached
    if #here I have some other code, not important
    else:
        print(data[i]["system"][qloop]["0"]) 
        #if I type "1" it prints "KM-aufnehmende Lesion >3cm, heterogene Lesion, viel Verkalkung?n(1) mind. eins davon trifft zun(2) trifft nicht zu"
    break

The expected output is being asked by my console "Select an option: ", iterating through my tree like dict based on my inputs, until there is no sublayer left, where it would finally print i.e. "Bosniak II"

Tags:

2

Answers


  1. 0

    When I try to run the program, it is throwing me an error NameError: name 'i' is not defined. Did you mean: 'id'? instead of an infinite loop. And after fixing the above error, getting the error KeyError: '2', which is because of the key 2 inside Choice 1 and Choice 2 of system. Made some tweaks to the existing code so that it will run successfully but it would be great if the exact goal or use case is provided. Note: As per the tweaks, Updated key 2 to '2' data variable dict and added var i so that it can be incremented.

    data = [
   {
     "final result":{
     "choice 1+3":"result1",
     "choice 1+4":"result2",
     "choice n":"result n"
  },
  "id":"lorem",
  "system":{
     "0":{
        "0":"initial question",
        "1":"Choice 1",
        "2":"Choice 2"
     },
     "Choice 1":{
            "2":"Choice 4",
            "0":" second question",
            "1":"Choice 3"
         },
         "Choice 2":{
            "2":"Choice 6",
            "0":" second question",
            "1":"Choice 5"
         }
      }
   }
]                        
i = 0                        
while True:
    qloop = input("Select an option: ", )
    if qloop == "R":
        break
    else:
        for l in range(len(data[i]["system"][f"{qloop}"])):
            print(data[i]["system"][f"{qloop}"][f"{l}"])
        break
    i += 1
    continue

    if you give the input as choice 1+3, it would fail because we’re not fetching values of only system from the for loop.

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  2. 0

    You can try this code snippet using a function:

    data = [{
  "id": "Bosniak",
  "system": 
          {
          "0": "Wurde ein Nieren Protokoll gemacht, ist <25% der Lesion KM aufnehmend, und ist kein Fettgewebe zu sehenn(1) alles trifft zu?n(2) trifft nicht zu",
          "1": {"0": "KM-aufnehmende Lesion >3cm, heterogene Lesion, viel Verkalkung?n(1) mind. eins davon trifft zun(2) trifft nicht zu",
                "1":"Bosniak1", "2":"Bosniak II"},
          "2": {"0": "Was ist zu sehen?n(1) >25% KM-aufnehmend oder fettign(2) homogene Lesion 20 - 30 HU", 
                "1": "Bosniak IV", "2":"Bosnaik V"}
          }         

}]

def get_dict_data(json_data):
    if isinstance(json_data, dict):
        for key, value in json_data.items():
            print(f": {value}") if key != "0" else print(value)
        choice = input("Select an option: ")
        if choice in json_data:
          get_dict_data(json_data[choice])
    else:
        print(json_data)

indx = "1"
get_dict_data(data[0]["system"][indx])

    KM-aufnehmende Lesion >3cm, heterogene Lesion, viel Verkalkung?
(1) mind. eins davon trifft zu
(2) trifft nicht zu
: Bosniak1
: Bosniak II
Select an option: 
2
Bosniak II

    If you want to iterate the entire data you can then use a while loop:
    Replace the last two lines of code in the above snippet with:

    indx = 0
while indx < len(data[0]["system"]):
    get_dict_data(data[0]["system"][str(indx)])
    print("")
    indx +=1

    Wurde ein Nieren Protokoll gemacht, ist <25% der Lesion KM aufnehmend, und ist kein Fettgewebe zu sehen
(1) alles trifft zu?
(2) trifft nicht zu

KM-aufnehmende Lesion >3cm, heterogene Lesion, viel Verkalkung?
(1) mind. eins davon trifft zu
(2) trifft nicht zu
: Bosniak1
: Bosniak II
Select an option: 
2
Bosniak II

Was ist zu sehen?
(1) >25% KM-aufnehmend oder fettig
(2) homogene Lesion 20 - 30 HU
: Bosniak IV
: Bosnaik V
Select an option: 
1
Bosniak IV
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