Re: importing csv data into database

Thanks guys,

appreciate your help. Yes i am looking to have a form that accepts CSV files. I will have a read on the link that you guys have provided and see how it goes.

Cheers

On Wed, Apr 1, 2015 at 11:44 AM, Andrew Farrell <armorsmith42@gmail.com> wrote:

Hello Sum,

There are two approaches you could take.

One is to install a plugin like django-import-export and then use it's import functionality. Its been a while since I've done this, but when I did under django-1.4 it Just Worked. This is the best approach if you know your data is clean and doesn't require any sort of processing before saving it.

The other is to write a custom manage.py command. This would let you load the data using a csv.DictReader, do some logic on it, and then bulk-create objects in the database. This approach has the disadvantage that if you have a bug in your processing script, you will end up adding messy data to your database and having to clean it up. To avoid this, you could write a unit test case which calls your import function in its setUp() method. This testcase would create a separate test database, import the data into it, run your test functions, and then clear the test database. This approach would also let you, for example, deliberately insert malformed info into the data and verify that your import function would catch those errors.

On Tue, Mar 31, 2015 at 6:46 PM, sum abiut <suabiut@gmail.com> wrote:

Hi,

Could someone please advise this i am trying to import data from csv file or write to database but i am confuse on how to start. i am using sqllite database.

Cheers,

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Re: login error: hostname doesn't match .... but it does!!!

This error doesn't appear in the Django sources for 1.6 or 1.7. I
don't think the error is being generated by Django, so ALLOWED_HOSTS
isn't the culprit. Plus, another clue is that "*.doba.com" isn't an
actual value in your ALLOWED_HOSTS.

If you search it appears related to Python SSL. Do you have an
authentication backend (like an LDAP module) connecting over SSL? I
think that's what's choking. Probably an error with SNI or SAN on the
certificate. But why Python SSL doesn't think the host matches the
wildcard is another mystery.

On Tue, Mar 31, 2015 at 4:06 PM, bwv549 <jtprince@gmail.com> wrote:
> Just trying to login a new user, but I'm getting this error, which makes no
> sense to me because it looks like it should match:
>
> Login error (https://www.jtprince.dev.doba.com/new-login.html) -- Exception:
> hostname 'www.jtprince.dev.doba.com' doesn't match either of '*.doba.com',
> 'doba.com' -- Result: None
>
> ALLOWED_HOSTS = [
> '.doba.com',
> '.doba.com.',
> ]
>
> What kinds of things should I try to get past this?
>
> Thanks!
>
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Re: importing csv data into database

Hello Sum,

There are two approaches you could take.

One is to install a plugin like django-import-export and then use it's import functionality. Its been a while since I've done this, but when I did under django-1.4 it Just Worked. This is the best approach if you know your data is clean and doesn't require any sort of processing before saving it.

The other is to write a custom manage.py command. This would let you load the data using a csv.DictReader, do some logic on it, and then bulk-create objects in the database. This approach has the disadvantage that if you have a bug in your processing script, you will end up adding messy data to your database and having to clean it up. To avoid this, you could write a unit test case which calls your import function in its setUp() method. This testcase would create a separate test database, import the data into it, run your test functions, and then clear the test database. This approach would also let you, for example, deliberately insert malformed info into the data and verify that your import function would catch those errors.

On Tue, Mar 31, 2015 at 6:46 PM, sum abiut <suabiut@gmail.com> wrote:

Hi,

Could someone please advise this i am trying to import data from csv file or write to database but i am confuse on how to start. i am using sqllite database.

Cheers,

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Re: django custom timezone middleware causing django.contrib.humanize test to fail

In general it's not possible to have those tests pass with arbitrary settings. To remedy this, the new test runner in Django 1.6 [1] won't pick up Django's tests that are part of contrib apps.

On a related note, consider upgrading to a supported version of Django (1.7+), or at least the last release in the 1.5 series (1.5.12) which remedies several security issues in 1.5.4.

[1] https://docs.djangoproject.com/en/stable/releases/1.6/#discovery-of-tests-in-any-test-module

On Tuesday, March 31, 2015 at 4:49:20 PM UTC-4, Matt Ball wrote:

Hi -- I'm unable to get all tests to pass with Django 1.5.4 when I have custom timezone-activating middleware enabled.

I've posted code here: http://stackoverflow.com/questions/29376612

Is there a way to disable the middleware for that specific test?

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Re: importing csv data into database

Is it a one-time import or are you looking to have a form that accepts CSV files?

Either way, I would start with the Python csv module. Works really well and should be able to convert your CSV file to a standard Python list of lists, which you should be able to coerce into models, etc.

https://docs.python.org/2/library/csv.html

Write a small script outside of Django that reads a file representing the typical CSV format you are expecting. Once that is working, you can incorporate the code from that script into a model or form. If you only need to import a CSV file one time, just modify that script to bootstrap the Django libraries and modules, then create your model instances from there.

You can also write directly to SQLite directly at that point if needed.

-James

On Mar 31, 2015 4:46 PM, "sum abiut" <suabiut@gmail.com> wrote:

Hi,

Could someone please advise this i am trying to import data from csv file or write to database but i am confuse on how to start. i am using sqllite database.

Cheers,

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importing csv data into database

Hi,

Could someone please advise this i am trying to import data from csv file or write to database but i am confuse on how to start. i am using sqllite database.

Cheers,

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Re: login error: hostname doesn't match .... but it does!!!

On 1/04/2015 8:06 AM, bwv549 wrote:
> Just trying to login a new user, but I'm getting this error, which makes
> no sense to me because it looks like it should match:
>
> Login error (https://www.jtprince.dev.doba.com/new-login.html) --
> Exception: hostname 'www.jtprince.dev.doba.com' doesn't match either of
> '*.doba.com', 'doba.com' -- Result: None
>
> ALLOWED_HOSTS = [
> '.doba.com',
> '.doba.com.',
> ]
>
> What kinds of things should I try to get past this?

Maybe get rid of the second item in the list. I don't think you need the
trailing dot.

I would put in the full hostname to prove it works then sequentially
remove bits until the problem is revealed.

ALLOWED_HOSTS = [
'www.jtprince.dev.doba.com',
'.jtprince.dev.doba.com',
'.dev.doba.com',
'.doba.com',
]

Just a stab in the dark really ...

Mike


>
> Thanks!
>
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login error: hostname doesn't match .... but it does!!!

Just trying to login a new user, but I'm getting this error, which makes no sense to me because it looks like it should match:

Login error (https://www.jtprince.dev.doba.com/new-login.html) -- Exception: hostname 'www.jtprince.dev.doba.com' doesn't match either of '*.doba.com', 'doba.com' -- Result: None

ALLOWED_HOSTS = [

    '.doba.com',

    '.doba.com.',

]

What kinds of things should I try to get past this?

Thanks!

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django custom timezone middleware causing django.contrib.humanize test to fail

Hi -- I'm unable to get all tests to pass with Django 1.5.4 when I have custom timezone-activating middleware enabled.

I've posted code here: http://stackoverflow.com/questions/29376612

Is there a way to disable the middleware for that specific test?

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Heisenbug to do with self.client losing its sessionstore

I have this code that looks something like this (django 1.6.11):

def test_something(self):

    url = someobject.get_url()

    User.objects.create_user('a', 'a@example.com', 'secret')

    assert self.client.login(username='a', password='secret')

    r = self.client.get(url)

    assert r.status_code == 302  # because you're not allowed to view it

    someobject.privacy_setting = 'different'

    r = self.client.get(url)

    assert r.status_code == 200  # now you can view it according the business logic

This code has been working for many many months but suddenly it started to Heisenfail with the last line being 302 != 200.

It might be related to caching somewhere else because it ONLY ever fails (if it fails!) when I run the whole test suite. 

After a lot of painful debugging I concluded that sometimes, that last self.client.get(url) causes `request.user == <SimpleLazyObject: <django.contrib.auth.models.AnonymousUser object at 0x112318f50>>`

I.e. for the second request made by that logged in client, it's all of a sudden NOT logged in!! Not always. Only sometimes. :(

I put in a debugging line just before that last test like `assert self.client.session['_auth_user_id']` and that sometimes fails. Almost as if the testclient loses its session store DURING the lifetime of the test. Sometimes. 

Anybody seen anything similar that might be able to explain it or give me a clue?

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Re: subprocess behave diferent in the server than in the client.

It's very likely that the actual user running the webserver process(es) does not have "ping" on the executables path...

HTH

Jirka

---

From: dk <demiank@gmail.com>

Sender: django-users@googlegroups.com

Date: Tue, 31 Mar 2015 08:12:03 -0700 (PDT)

To: <django-users@googlegroups.com>

ReplyTo: django-users@googlegroups.com

Subject: Re: subprocess behave diferent in the server than in the client.

playing a littlie bit more, I found out that does work if I am using the manage.py runserver.

but doesn't work using the production django =(.

On Monday, March 30, 2015 at 5:53:59 PM UTC-5, dk wrote:

hi, I have a button in my webpage that lunch a subprocess and check the ping of the computer and save the information in a text file. that's it,  very basic stuff.

If I am doing my click in the server computer  everything works,

the subprocess will ping the computer, make the file and save the information.

and go back the corresponding view.

but if I do it from a client computer,  does all the script,  return the view that needs to return, but it never lunched the subprocess =(.   is like that line was commented or something doesn't even complain or spits errors =(

have any one got an issue like this?

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Chicago Django Study Group

Hello All,

I'm hosting a weekly study group in Chicago. If anyone on the list is interested in stopping in and joining us please register (it's free): http://www.eventbrite.com/e/chicago-django-study-group-april-5th-2015-tickets-16386027048

Regards,
Lane

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Re: Intermittent "Can't initialize character set latin1 errors" after centos 6 install

We've also gotten "can't initialize utf8" errors in the same intermittent time period.

OperationalError: (2019, "Can't initialize character set utf8 (path: /usr/share/mysql/charsets/)")

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Intermittent "Can't initialize character set latin1 errors" after centos 6 install

Hello,

We have an application that doesn't have much user interaction, mostly list displays that has been stable for quite some time. We haven't changed it since moving to django 1.6.5

but centos was just upgraded from 5 to 6 on the server we need to work on.

After this we started noticing intermittent:

OperationalError: (2019, "Can't initialize character set latin1 (path: /usr/share/mysql/charsets/)")

errors. 

These errors will show up randomly for 7-18 minutes, perhaps twice a week, and I can't discern any pattern for when they're showing up.

When they stop happening, I can hit the same urls, with no content/data changed, and it's fine.

We are using mysql-python 1.2.5

When we check the db, it's:

| character_set_database | utf8            |

| collation_database     | utf8_general_ci |

Settings are:

DATABASES = {

     'default': {

        'ENGINE': 'django.db.backends.mysql', 

        'NAME': 'dbname',                    

        'USER': 'dbuser',                     

        'PASSWORD': 'dbpassword',                

        'HOST': 'host',                    

        'PORT': '',    

        "OPTIONS": { 

        'sql_mode': 'TRADITIONAL,STRICT_ALL_TABLES,ANSI', 

'connect_timeout': 10, 

'charset': 'utf8', 

'init_command': 'SET storage_engine=INNODB', 

} 

       }

}

We just added the sql_mode to match settings from other applications on the server, but the error was happening without it. We haven't been able to reproduce it. The server shows:

SHOW variables LIKE '%character_set%';

+--------------------------+----------------------------+

| Variable_name            | Value                      |

+--------------------------+----------------------------+

| character_set_client     | utf8                       |

| character_set_connection | utf8                       |

| character_set_database   | utf8                       |

| character_set_filesystem | binary                     |

| character_set_results    | utf8                       |

| character_set_server     | utf8                       |

| character_set_system     | utf8                       |

| character_sets_dir       | /usr/share/mysql/charsets/ |

+--------------------------+----------------------------+

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Re: encode url

you want to encode them before they are submitted to the server? why?

On Tue, Mar 31, 2015 at 1:23 PM, Pnelson <pnelson.tome@gmail.com> wrote:

Im trying to learn django and i have a form in html that have 3 arguments (app_id,user_id and username) and i want to encode those 3 arguments in base64.

views.py

def encode(self):          return base64.b64encode()    def decode(self):          return base64.b64decode()

login.html

<body>  <form action="/notification_html/" method="get">      Application ID: <input type="text" name="appid">      User ID: <input type="text" name="userid">      Username: <input type="text" name="username">      <input type="submit" value="Login">      <input type="reset" value="Reset">  </form>  </body>

URL created: http://127.0.0.1:8000/notification_html/?appid=1&userid=&username=1

Any suggestion to encode the url?

Thanks for help

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Re: subprocess behave diferent in the server than in the client.

What is your production stack (nginx/uwsgi/permissions folder etc. etc.)?
Do you have any logger / stack trace to debug it?

Thanks

On 03/31/2015 05:12 PM, dk wrote:

playing a littlie bit more, I found out that does work if I am using the manage.py runserver.

but doesn't work using the production django =(.

On Monday, March 30, 2015 at 5:53:59 PM UTC-5, dk wrote:

hi, I have a button in my webpage that lunch a subprocess and check the ping of the computer and save the information in a text file. that's it,  very basic stuff.

If I am doing my click in the server computer  everything works,

the subprocess will ping the computer, make the file and save the information.

and go back the corresponding view.

but if I do it from a client computer,  does all the script,  return the view that needs to return, but it never lunched the subprocess =(.   is like that line was commented or something doesn't even complain or spits errors =(

have any one got an issue like this?

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Re: Hidden fields in formsets

Hello,

I read very quickly, but you sure you want to *render* and get the value
of "user_create" from the client?
It can be modified by any client...

aRkadeFR

On 03/31/2015 10:45 AM, François GUÉRIN wrote:

Hi,

I'm using multiple formsets in Create / Update views, and I want to set some hidden fields in it : user_create, date_create on creation, user_update, date_update on update.

I've created a MultiFormsetMixin, which provide machinery to initialize those formsets in my CreateView / UpdateView.
Basicaly, the mixin fill a formset_list containing dicts with {'formset': <formset>, 'name': <prefix for formset>, 'verbose_name': <displayable name>}... The rendering of the formsets uses the same rendering than 'normal' formsets, via a {%for formset in formset_list %}{# formset rendering #}[% endfor %}. The formsets display normaly.

Data initialization is performed through the 'initial' dict. Every forms in the formsets have the same values for those fields, at initialization, so I update each form of the formsets with those values.

My problem is that those hidden fields are not rendered in the template, even in a 'hidden_field'. I've tryed to set 'exclude' and 'hidden_fields' Meta option in my ModelForm object, but it doesn't work.

When I go through the 'form.hidden_fields' I have my formset administrative normal data (id, parent) but not my fields.

Is it possible to render those fields in the template ?

Thanks !

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encode url

Im trying to learn django and i have a form in html that have 3 arguments (app_id,user_id and username) and i want to encode those 3 arguments in base64.

views.py

def encode(self):          return base64.b64encode()    def decode(self):          return base64.b64decode()

login.html

<body>  <form action="/notification_html/" method="get">      Application ID: <input type="text" name="appid">      User ID: <input type="text" name="userid">      Username: <input type="text" name="username">      <input type="submit" value="Login">      <input type="reset" value="Reset">  </form>  </body>

URL created: http://127.0.0.1:8000/notification_html/?appid=1&userid=&username=1

Any suggestion to encode the url?

Thanks for help

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Re: Django project for multiple clients

This is what we've done successfully for multiple projects. Django makes it fairly straightforward.

  -- Ben

On Fri, Mar 27, 2015 at 4:37 PM, Gabriel - Iulian Dumbrava <gabriel.dumbrava@gmail.com> wrote:

If your clients are using different subdomains, like client1.webapp.com, client2.webapp.com then you can have separate settings file per subdomain and completely isolate the client data, but still use the same virtualenv and codebase. You must also take care of the file upload/access because you also need to isolate it.

joi, 26 martie 2015, 18:23:38 UTC+2, Steven Nash a scris:

We are design a DJango based application to be used my multiple clients.  Each client will have there own database but share the same code base.

In the past, when I've done something like this, I have configure a separate virtual host for each client.

This time we are thinking about using URL routing to select the clients database, and creating a small Django Webapp to allow an admin team to setup new clients etc.

I'd be interested to hear how others have tackled this, I have Googled quite a bit on this topic.

Steve

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Re: subprocess behave diferent in the server than in the client.

playing a littlie bit more, I found out that does work if I am using the manage.py runserver.

but doesn't work using the production django =(.

On Monday, March 30, 2015 at 5:53:59 PM UTC-5, dk wrote:

hi, I have a button in my webpage that lunch a subprocess and check the ping of the computer and save the information in a text file. that's it,  very basic stuff.

If I am doing my click in the server computer  everything works,

the subprocess will ping the computer, make the file and save the information.

and go back the corresponding view.

but if I do it from a client computer,  does all the script,  return the view that needs to return, but it never lunched the subprocess =(.   is like that line was commented or something doesn't even complain or spits errors =(

have any one got an issue like this?

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Re: Upgrade to django 1.7- ImproperlyConfigured -Tastypie label duplicate? help

Thats strange.

Are you using pip to install dependencies? Try uninstalling everything and reinstalling again. 

Make sure INSTALLED_APPS is not being defined somewhere else in the code. 

Does the error persists if you set DEBUG = False locally?

On Tue, Mar 31, 2015 at 10:21 AM, amarshall <adriandm10@gmail.com> wrote:

Hi Filipe,

I have few apps installed. When I comment out the tastypie line my app builds but gets an error in production because tastypie app isn't found. Here it is:

INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'rest_framework',
   # 'south',       // commented out after upgrade to Django 1.7
    'tastypie',
    'lokal',        #my app
)

On Tuesday, March 31, 2015 at 5:52:55 AM UTC-4, Filipe Ximenes wrote:

Can you show us your INSTALED_APPS?
It may be the case you have a lot of apps installed and is not seeing a duplicate reference to tastypie.

On Mar 29, 2015 9:43 PM, "amarshall" <adria...@gmail.com> wrote:

Hi,

 So I updated my django project from django 1.6 to 1.7.7 and when I run "python manage.py migrate" I get this error stating that I have a duplicate label.

Here's the traceback

  Creating tables...
  Installing custom SQL...
  Installing indexes...
Running migrations:
  Applying tastypie.0001_initial...Traceback (most recent call last):
  File "manage.py", line 11, in <module>
    execute_from_command_line(sys.argv)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 338, in execute
    output = self.handle(*args, **options)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/migrate.py", line 161, in handle
    executor.migrate(targets, plan, fake=options.get("fake", False))
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py", line 68, in migrate
    self.apply_migration(migration, fake=fake)
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py", line 96, in apply_migration
    if self.detect_soft_applied(migration):
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py", line 140, in detect_soft_applied
    apps = project_state.render()
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/state.py", line 57, in render
    self.apps = Apps([AppConfigStub(label) for label in sorted(self.real_apps + list(app_labels))])
  File "/usr/local/lib/python2.7/dist-packages/django/apps/registry.py", line 56, in __init__
    self.populate(installed_apps)
  File "/usr/local/lib/python2.7/dist-packages/django/apps/registry.py", line 89, in populate
    "duplicates: %s" % app_config.label)
django.core.exceptions.ImproperlyConfigured: Application labels aren't unique, duplicates: tastypie

Not sure what to do here. I remove tastypie from the list of INSTALLED_APPS in my settings and everything works fine. but I do need it. Any suggestions ?

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