CODEWITHSUNDEEP
pythondictionary
smomajay
smomajay

Reputation: 61

Append data to a dict

I have been trying to create a nested dictionary I guess there is something about dictionaries I'm missing. I succeeded in created the values and keys on my console but was getting errors when I tried to append it. It kept giving me the last value in my dictionary. Please what I'm I doing wrong?

u= [(2, 'errorid 4'), (1, 'errorid 4260'), (6, 'errorid 7'), (75, 'errorid 0'),
    (1, 'errorid 14'), (4, 'errorid 4b07')]
v=['Frequency', 'Item']

data ={}
dicts ={}

for i,con in enumerate(u):
    con = list(con)
    for m,n in enumerate(con):
        dicts[v[m]]=n
    print(dicts)
    data[i+1]=dicts

The output on the console for dicts was correct, but when I tried to nest it is was not working:

{'Frequency': 2, 'Item': 'errorid 4'}
{'Frequency': 1, 'Item': 'errorid 4260'}
{'Frequency': 6, 'Item': 'errorid 7'}
{'Frequency': 75, 'Item': 'errorid 0'}
{'Frequency': 1, 'Item': 'errorid 14'}
{'Frequency': 4, 'Item': 'errorid 4b07'}

Output should look like this:

data = {1: {'Frequency': 2, 'Item': 'errorid 4'},
        2: {'Frequency': 1, 'Item': 'errorid 4260'},
        3: {'Frequency': 6, 'Item': 'errorid 7'}
        4: {.... }

Upvotes: 0

Views: 165

Answers (2)

Samwise
Samwise

Reputation: 71454

Your data dictionary consists of a bunch of copies of the same dictionary (dicts), which you keep overwriting. Every time you change the values in dicts you're implicitly changing the value for all the entries in data simultaneously.

The comprehension in Jean-Claude's answer will build a new dict for each item, avoiding this problem.

Upvotes: 0

user13517564
user13517564

Reputation:

Try this:

data = {i + 1: {p: q for p, q in zip(v, x)} for i, x in enumerate(u)}

Output:

{1: {'Frequency': 2, 'Item': 'errorid 4'}, 2: {'Frequency': 1, 'Item': 'errorid 4260'},
 3: {'Frequency': 6, 'Item': 'errorid 7'}, 4: {'Frequency': 75, 'Item': 'errorid 0'}, 
 5: {'Frequency': 1, 'Item': 'errorid 14'}, 6: {'Frequency': 4, 'Item': 'errorid 4b07'}}

Upvotes: 1

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