Updating dictionary values

[Sukumar]

I have a dictionary which looks like

 global_dict = {'GET': [1, 0, 0], 'POST': [1, 0, 0], 'PUT': [1, 0, 0], 'DELETE': [1, 0, 0]} 

I'm trying to increment the value of GET item only using

 global_dict[request.method][0]+=1 

But what's happening when I try that is this.

 global_dict = {'GET': [1, 0, 0], 'POST': [1, 0, 0], 'PUT': [1, 0, 0], 'DELETE': [1, 0, 0]} 

How do I update only list which is in GET alone and not the others.

[jankislinger]

Your question is a bit confusing to me. You state that the problem is that all lists are updated but your example shows that none of the lists has changed. I think the original problem is that all lists are referencing the same object.

zeros = [0, 0, 0]
global_dict = {key: zeros for key in ['GET', 'POST', 'PUT', 'DELETE']}
global_dict['GET'][0] += 1
print(global_dict)
{'GET': [1, 0, 0], 'POST': [1, 0, 0], 'PUT': [1, 0, 0], 'DELETE': [1, 0, 0]}

Try this (create copies of the original list):

zeros = [0, 0, 0]
global_dict = {key: zeros.copy() for key in ['GET', 'POST', 'PUT', 'DELETE']}
global_dict['GET'][0] += 1
print(global_dict)
{'GET': [1, 0, 0], 'POST': [0, 0, 0], 'PUT': [0, 0, 0], 'DELETE': [0, 0, 0]}

[Sukumar]

Thanks man. That helped me a lot.