Looks like it is resolved for now. One of the payment processor libs had 
getcontext().prec = 2. After commenting it out, things looks ok. Once the 
flow reached that code, i had issues.
But still not clear why it hasn't happening on dev environment


On Monday, May 25, 2015 at 2:46:19 AM UTC+5:30, Danny S wrote:
>
>  Is it possible that you are running with different versions of python 
> between the runserver and nginx/gunicorn versions of your website?
> I've noticed before in other work that e.g. Python 2.7 has slightly 
> different precision on floats than Python 2.6...
>
> But yeah, weird problem.
>
> On 25/05/2015 3:45 AM, vikraw wrote:
>  
> The staged server have the locale correctly set ( see at end of my message 
> the settings).
> Steps on my Staged server - Amazon Ec2 - Ubuntu 14
> - stopped supervisor and nginx on my staged machine
> - switched my staged machine to run using - python manage runserver 
> 0.0.0.0:8000 
> - put "printf value" statement in the "currency" filter under shop_tags.py 
> now when i browse (using windows machine) the site running on ec2 machine 
> I have NO issues with the Product prices, Cart total etc..Both the Browser 
> and the printf values match
>
> However, when I switch the machine to nginx and start browsing from 
> windows machine, i start getting the incorrect prices (alternate between 
> correct and wrong) when
> - I press the different products or go back and forth from cart to product 
> pages
> - Switching between incorrect price and correct prices happens everytime 
> when I goto my payment processor and click the back button again to website 
> (neglecting browser warnings that page has expired). BUT this doesn't 
> happens when site running from "python manage runserver"
>
> ex: Rs.249 is displayed as Rs.250 and Rs.349 as Rs.350. clicking the same 
> link toggles between those 2 values 
>
> Help is greatly appreciated as i am near completion and can't figure this 
> ambiguous behavior. 
> My development is on Local Machine a Ubuntu 12.01LTS and I was testing 
> using "python manage runserver" on 127.0.0.0:8000... This is working as 
> expected
>
>
> locale command on ubuntu-14 amazon-ec2 
> LANG=en_IN
> LANGUAGE=en_IN:en
> LC_CTYPE="en_IN"
> LC_NUMERIC="en_IN"
> LC_TIME="en_IN"
> LC_COLLATE="en_IN"
> LC_MONETARY="en_IN"
> LC_MESSAGES="en_IN"
> LC_PAPER="en_IN"
> LC_NAME="en_IN"
> LC_ADDRESS="en_IN"
> LC_TELEPHONE="en_IN"
> LC_MEASUREMENT="en_IN"
> LC_IDENTIFICATION="en_IN"
> LC_ALL=
>
>
>
>
>
> The currencies symbol is correctly shown on the browser. However, i the 
> prices change sometimes alternately and sometimes randomly. Correct price 
> is 249. it switches between 249 and 250 when i click the same page or cart 
> button. the cart total is updated 
>
> On Saturday, May 23, 2015 at 10:59:37 PM UTC+5:30, Stephen McDonald wrote: 
>>
>> It looks like you're calculating the correct value being stored in the 
>> DB, and only getting the error on output. Each currency value gets passed 
>> through the "currency" template tag, which is where the problem likely is. 
>> It also deals with machine specific locale settings, which will vary per 
>> machine - also making it a likely candidate for the error. 
>>
>>  Here's the source for it - 
>> https://github.com/stephenmcd/cartridge/blob/master/cartridge/shop/templatetags/shop_tags.py#L17-L41
>>
>>  Have you consistently defined (and installed) the correct locale? 
>> (defined with the SHOP_CURRENCY_LOCALE setting).
>>
>>  Can you debug what happens in the "currency" template tag on your 
>> deployed machine? That might entail adding some logging to it, making a 
>> copy of it in your own project, printing out values while manually running 
>> it in a terminal, whatever works for you.
>>
>>  
>>  
>>  
>>  
>> On Sat, May 23, 2015 at 3:26 AM, vikraw <vik...@gmail.com> wrote:
>>
>>> Hi
>>>
>>> Almost near launching a site. But running into Price rounding issues 
>>> today when I fab deployed to AWS ec2 instance. Never had those issues 
>>> before on ec2.
>>> My Development environment is working great with no issues.
>>>
>>> However on deployed machine -Prices are getting rounded off in various 
>>> places ex: 249 was rounded off to 250 in cart.html, as well as HTML 
>>> invoice, PDF invoice.
>>> Unit Price was displaying correctly as 249 But "Total Price" was showing 
>>> 250
>>>
>>> Also, facing rounding off issues in PDF invoice and View Invoice in 
>>> browser. 
>>>
>>> The amounts are accurate in email invoice though. Even the amounts sent 
>>> to payment gateway are correct. When the account user goes to history of 
>>> orders, the amounts are correctly displayed in the columns. Only issues are 
>>> cart, html invoice, pdf templates.
>>>
>>> I have a tax_handler where i calculate tax as follows - TAX_RATE = 0.05  
>>>  tax_total = Decimal(amount_to_tax) * Decimal(str(settings.TAX_RATE)) 
>>>
>>> See attached files - 366.45 is the correct amount being shown in 
>>> Order-History page, but invoice is generated or 370.
>>>
>>>
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>>  
>>
>>
>>  -- 
>> Stephen McDonald
>> http://jupo.org
>>  
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