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Hi, i’m having problem using python3 on my Ubuntu 16.04.3 x64 with the dict() function
when i use it on my own PC it works fine but on the cloud server isn’t running well..

after sorting my dictionary with sotred() function i get this output (example):

[(1, {'car': 'red'}, 2, {'bike': 'green'}, 3, {'plane': 'white'})]

when i want it to turn the tuple to dictionary i use dict() (example):

dict([(1, {'car': 'red'}, 2, {'bike': 'green'}, 3, {'plane': 'white'})])

but when use the dict function it reorder everything randomly (example):

{2, {'bike': 'green'}, 3, {'plane': 'white'}, 1, {'car': 'red'}}

any idea why?

Answer 1

Woet September 20, 2017

Show your test case and exact python versions for both platforms.

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Alboali September 20, 2017

Python version:
PC: 3.6.0
Cloud: 3.5.2

#!/usr/lib python3

L = {3: {'iphone': 5}, 2: {'iphone': 4}, 4: {'iphone': 3}, 5: {'iphone': 6}, 6: {'iphone': 7}, 7: {'iphone': 1}, 8: {'iphone': 2}}

# Sort dict on iphone numbers
T = sorted(L.items(), key=lambda y: int(y[1]['iphone']))
print(T) # print to check the result of sorted function

D = dict(T)
print(D) # check the tuple after changed to dictionary

Result must be:

{7: {'iphone': 1}, 8: {'iphone': 2}, 4: {'iphone': 3}, 2: {'iphone': 4}, 3: {'iphone': 5}, 5: {'iphone': 6}, 6: {'iphone': 7}}

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Answer 2

Alboali September 20, 2017

Python version:
PC: 3.6.0
Cloud: 3.5.2

#!/usr/lib python3

L = {3: {'iphone': 5}, 2: {'iphone': 4}, 4: {'iphone': 3}, 5: {'iphone': 6}, 6: {'iphone': 7}, 7: {'iphone': 1}, 8: {'iphone': 2}}

# Sort dict on iphone numbers
T = sorted(L.items(), key=lambda y: int(y[1]['iphone']))
print(T) # print to check the result of sorted function

D = dict(T)
print(D) # check the tuple after changed to dictionary

Result must be:

{7: {'iphone': 1}, 8: {'iphone': 2}, 4: {'iphone': 3}, 2: {'iphone': 4}, 3: {'iphone': 5}, 5: {'iphone': 6}, 6: {'iphone': 7}}

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Answer 3

dthorell September 22, 2017

Python’s dict is not guaranteed to return items in the same order.
Try something like this if required:

#!/usr/lib python3
from collections import OrderedDict

L = {3: {'iphone': 5}, 2: {'iphone': 4}, 4: {'iphone': 3}, 5: {'iphone': 6}, 6: {'iphone': 7}, 7: {'iphone': 1}, 8: {'iphone': 2}}

# Sort dict on iphone numbers
T = sorted(L.items(), key=lambda y: int(y[1]['iphone']))
#print(T) # print to check the result of sorted function

D = OrderedDict(T)
print(D) # check the tuple after changed to dictionary

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Alboali September 22, 2017

Nothing changed the OrderedDict() returns a dict inside a list
so i need to use the dict() function again..
anyways i think the problem here is with the python version 3.5
as i said it’s work completely fine on my PC with python version 3.6
Reply Report
- dthorell September 22, 2017
  
  There is nothing wrong with the python version, the dict implementation is changed in 3.6: https://docs.python.org/3.6/whatsnew/3.6.html#new-dict-implementation to preserve the insert order (but should not be relied upon)
  
  But you don’t need to convert a OrderedDict with dict(), You can access it as a normal dict
  
  Reply Report
  
  Alboali September 22, 2017
  
  Thanks alot! finally it worked as you said ;)
  
  Reply Report

Answer 4

Alboali September 22, 2017

Nothing changed the OrderedDict() returns a dict inside a list
so i need to use the dict() function again..
anyways i think the problem here is with the python version 3.5
as i said it’s work completely fine on my PC with python version 3.6
Reply Report
- dthorell September 22, 2017
  
  There is nothing wrong with the python version, the dict implementation is changed in 3.6: https://docs.python.org/3.6/whatsnew/3.6.html#new-dict-implementation to preserve the insert order (but should not be relied upon)
  
  But you don’t need to convert a OrderedDict with dict(), You can access it as a normal dict
  
  Reply Report
  
  Alboali September 22, 2017
  
  Thanks alot! finally it worked as you said ;)
  
  Reply Report

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