CODEWITHSUNDEEP
python
DecentMakeover
DecentMakeover

Reputation: 19

Adding another element to a dictionary

I have a dictionary which looks like this,

{'023': {'ARTERIAL': {'Age': '043Y'},
  'PORTAL': {'Age': '043Y'},
  'VENOUS': {'Age': '043Y'}},
 '024': {'ARTERIAL': {'Age': '048Y'},
  'PORTAL': {'Age': '048Y'},
  'VENOUS': {'Age': '048Y'}}}

I have set this up using this ,

data_dict={}
for folders in os.listdir(new_path):
    for AVP in os.listdir(os.path.join(new_path, folders)):
        for files in os.listdir(os.path.join(new_path, folders, AVP)):          
            file = dicom.read_file(os.path.join(new_path, folders, AVP, files))
            Name = file.Name
            Age = file.Age
            at = file.AcquisitionNumber
            data_dict.setdefault(folders, {}).setdefault(AVP,{}).setdefault('Age',file.Age)
            break

Now along with Age i would like to add more key value items to the age dictionary ,Something like this

{'023': {'ARTERIAL': {'Age': '043Y','number': 43, 'time':12:00},
  'PORTAL': {'Age': '043Y','number': 3, 'time':2:00},
  'VENOUS': {'Age': '043Y','number': 93, 'time':1:00}},

i have tried 

data_dict.setdefault(folders, {}).setdefault(AVP,{}).setdefault('Age',file.Age).setdefault(file.AcquisitionNumber, file.AcquisitionNumber)

which gives me 

 AttributeError: 'str' object has no attribute 'setdefault'

Any suggestions on how i can add more key value pairs will be helpful, Thanks in advance

Upvotes: 1

Views: 53

Answers (1)

Barmar
Barmar

Reputation: 780974

setdefault returns the value of the dictionary element, either the one that was already there or the default you provided. The first two setdefault() calls return the nested dictionaries, but the last one returns file.Age, which is a string.

Assign the last dictionary to a variable and then set the values you want in it:

d = data_dict.setdefault(folders, {}).setdefault(AVP,{})
d['Age'] = file.Age
d['number'] = file.AcquisitionNumber

Upvotes: 3

Related Questions