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Problem adding a Key Value pair

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  Problem adding a Key Value pair Anurag Patibandla <anuragpatibandla7@gmail.com> - 2014-11-04 11:37 -0800
    Re: Problem adding a Key Value pair MRAB <python@mrabarnett.plus.com> - 2014-11-04 20:19 +0000
    Re: Problem adding a Key Value pair Anurag Patibandla <anuragpatibandla7@gmail.com> - 2014-11-04 12:56 -0800

#80227 — Problem adding a Key Value pair

I am trying to add a key value pair of ("Priority":"1") to queue1, ("Priority":"2") to queue2, and ("Priority":"3") to queue3. 
When I just add ("Priority":"1") to queue1, it works. 
But when I run the above code, ("Priority":"3") is being added to all the queues. 
This looks trivial and I don't understand why this is happening. Is there something wrong with what I am doing?

json_split = {} 
value = {"Status": "Submitted", "m_Controller": "Python"} 
a = range(31) 
del a[0] 
for i in a: 
    json_split[i] = value 
keys = json_split.keys() 
order = list(keys) 
q1 = int(round(len(keys)*0.2)) 
q2 = int(round(len(keys)*0.3)) 
q3 = int(round(len(keys)*0.5)) 
b = [q1,q2,q3] 
n=0 
threedicts = [] 
for i in b: 
    queues = order[n:n+i] 
    n = n+i 
    lists = [(queues[j], json_split.get(queues[j])) for j in range(len(queues))] 
    onedict = {} 
    for q in queues: 
        onedict[q] = json_split[q] 
    threedicts.append (onedict) 
queue1, queue2, queue3 = threedicts 
keys1 = queue1.keys() 
for i in keys1: 
    queue1[i]['Priority'] = ['1'] 
keys2 = queue2.keys() 
for j in keys2: 
    queue2[j]['Priority'] = ['2'] 
keys3 = queue3.keys() 
for z in keys3: 
    queue3[z]['Priority'] = ['3'] 

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#80231

On 2014-11-04 19:37, Anurag Patibandla wrote:
>
> I am trying to add a key value pair of ("Priority":"1") to queue1, ("Priority":"2") to queue2, and ("Priority":"3") to queue3.
> When I just add ("Priority":"1") to queue1, it works.
> But when I run the above code, ("Priority":"3") is being added to all the queues.
> This looks trivial and I don't understand why this is happening. Is there something wrong with what I am doing?
>
> json_split = {}
> value = {"Status": "Submitted", "m_Controller": "Python"}
> a = range(31)
> del a[0]

That's better as:

a = range(1, 31)

> for i in a:
>      json_split[i] = value

Here the key will be whatever 'i' refers to (1..30) and the value will
be the dict referred to by 'value'.

Try adding the line:

print json_split[1] is json_split[2]

It'll print out 'True'; it's saying that they are the same dict.

You want the values of json_split to be _separate_ dicts.

The fix is simple. Just make a copy of the dict for each one:

for i in a:
       json_split[i] = dict(value)

[snip]

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#80233

On Tuesday, November 4, 2014 2:37:49 PM UTC-5, Anurag Patibandla wrote:
> I am trying to add a key value pair of ("Priority":"1") to queue1, ("Priority":"2") to queue2, and ("Priority":"3") to queue3. 
> When I just add ("Priority":"1") to queue1, it works. 
> But when I run the above code, ("Priority":"3") is being added to all the queues. 
> This looks trivial and I don't understand why this is happening. Is there something wrong with what I am doing?
> 
> json_split = {} 
> value = {"Status": "Submitted", "m_Controller": "Python"} 
> a = range(31) 
> del a[0] 
> for i in a: 
>     json_split[i] = value 
> keys = json_split.keys() 
> order = list(keys) 
> q1 = int(round(len(keys)*0.2)) 
> q2 = int(round(len(keys)*0.3)) 
> q3 = int(round(len(keys)*0.5)) 
> b = [q1,q2,q3] 
> n=0 
> threedicts = [] 
> for i in b: 
>     queues = order[n:n+i] 
>     n = n+i 
>     lists = [(queues[j], json_split.get(queues[j])) for j in range(len(queues))] 
>     onedict = {} 
>     for q in queues: 
>         onedict[q] = json_split[q] 
>     threedicts.append (onedict) 
> queue1, queue2, queue3 = threedicts 
> keys1 = queue1.keys() 
> for i in keys1: 
>     queue1[i]['Priority'] = ['1'] 
> keys2 = queue2.keys() 
> for j in keys2: 
>     queue2[j]['Priority'] = ['2'] 
> keys3 = queue3.keys() 
> for z in keys3: 
>     queue3[z]['Priority'] = ['3']

Awesome! Thank you!!

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