Help with django and MongoDB

Hi guys, I need a little bit of help. I'm a student and I got an assignment with NoSQL databases, we need to use MongoDB (we need to do a LinkedIn sort of web app). I decided to used django since I'm trying to learn it and I've been finding some issues trying to link MongoDB to my django app.

* OS: Windows 8.1
* Django version: 1.10
* MongoDB version: 3.0.4 (since I have a 32-bits laptop)

I've followed different tutorials and can't seem to get this running. I'm also using PyMongo 2.8 and Mongoengine 0.9.

* This is how I have my [settings.py](https://pastebin.com/RGLiZKQ4) file.
* The errors I'm getting is [this](https://pastebin.com/fAPwTVD8)

I'm assuming that the authentication failed because I might no me logging in correctly but this is the way I've seem in most tutorials. The 'root' user I created from mongo shell.

Sorry for the pastebin links I just don't want to make this post longer. And thank you.

@EDIT: So it results that my user 'root' doesn't exist on my testDB. I switched to admin db -> created user -> applied 'root' rolls ... I read it would give him access to all my databases it seems no, I also created another called 'admin' and gave him 'roll: ["userAdminAnyDatabase", "dbAdminAnyDatabase", "readWriteAnyDatabase"]' but it doesn't seem to work as well. Does anyone know the correct way to do this? Or this shall be done from my 'testDB' ?

/r/django
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How do you make beautiful data visualizations in Python?
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How can I force a pandas table to resize to fit something I print out?

Here is the table: https://www.dropbox.com/s/2r4vb0wuc2icwp2/table2.xlsx?dl=0

Cell code:
table2 = pd.read_excel('table2.xlsx')
display(HTML(table2.to_html(index=False)))

When I try to print out the notebook the last two columns are cut off. Any ideas on how I can format it so that won't happen? I'm printing using chrome -> print preview. I use this method because the PDF via latex just doesn't capture a very similar PDF output.

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All you need to know about prefetching in Django
https://medium.com/@hakibenita/all-you-need-to-know-about-prefetching-in-django-f9068ebe1e60

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[P] Predicting the outcome of Cricket Matches using Machine Learning
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/r/MachineLearning
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[AF] Using SQLAlchemy's ilike or contains operators

I'm building some simple search functionality into my site, and I'm using the `contains` operator to search my rows for some text. My query looks something like this: `User.query.filter(func.lower(User.name).contains(term))`

However, when I enter `_` or `%`, I get every single row! How can I escape these the proper way? I know I can probably just do a `.replace` on the search term but what do I replace it with? Is there an official SQLAlchemy way of doing this? Every other part of SQLAlchemy I've been exploring is really nice and polished, but apparently not this part!

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Develop your first web application in Django 1.10 – Part 4
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This weekend's play project

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Creating a rest api with many to many relationships

As the title says I'm creating an API to map employees to shifts, I've got /employees and /shifts, but I'm a little confused about creating an endpoint to map the two? I was going to create another endpoint /patterns, and then pass an employee id and shift id and parameters to create a new mapping, does this sound correct? Also do I need to create a new model or serializer for this endpoint?

thanks

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https://redd.it/68bzyy

Free Wolfram Alpha clone written in Python. How is this not more popular?
http://gamma.sympy.org/

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My university is thinking of teaching the engineering students python instead of matlab - How to help convince them?

Hey all

As the title suggests, the teaching committee at my university are thinking of moving from teaching undergrad engineering students python instead of matlab.

Since they've asked for some student input, can anyone think of any decent arguments to try to make the move?

biggest reason presented for keeping matlab is that matrix manipulations are easy (if you've ever tried to do FEM stuff in numpy it just makes you sad).




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[R] Toward Efficient Deep Neural Network Deployment: Deep Compression and EIE (2016)
https://www.youtube.com/watch?v=CrDRr2fxbsg

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PRAW 4.5.0 Released

Notable additions:

* Complete API support for the new modmail system (huge shout out to [Levi Roth](https://github.com/leviroth) for the implementation)
* inbox stream
* Ability to introduce pauses into streams (thanks /u/elnuno)

Please see the 4.5.0 change log entries here: https://praw.readthedocs.io/en/latest/package_info/change_log.html

### PRAW 5

The next release, sans any necessary bug fixes, will be PRAW5 in order to resolve all the deprecations up to this point in the PRAW4 versions. Those items are already enumerated in the previously linked change log. To make use of these changes now, install the development version of PRAW via:

pip install --upgrade https://github.com/praw-dev/praw/archive/master.zip

Thanks again to everyone who has contributed to PRAW via code, documentation, or by simply helping to answer other people's questions. PRAW wouldn't be what it is today without your help.

/r/Python
https://redd.it/68e6z7

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Here's [Science Flask](https://github.com/danielhomola/science_flask), a template project for scientic web-apps. If you're a scientist planning to put your research tool online, then hopefully it will save you weeks of development time. I definitely wish I had something like this when I started [CorrMapper](https://www.medbio.imperial.ac.uk/corrmapper/).

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[P] Globally and Locally consistent image completion
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/r/MachineLearning
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Django Tutorial | sqlmigrate command ending in error

I am going through this [tutorial](https://docs.djangoproject.com/en/1.11/intro/tutorial02/) in the documentation. When I execute the command: "python manage.py sqlmigrate polls 0001" it is ending in below error. Please help resolve the issue.

**Error:**
Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/scratch/njakkula/NJ/py_Oracle/bugdb/triage/lib/python2.7/site-packages/django/core/management/__init__.py", line 363, in execute_from_command_line
utility.execute()
File "/scratch/njakkula/NJ/py_Oracle/bugdb/triage/lib/python2.7/site-packages/django/core/management/__init__.py", line 355, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/scratch/njakkula/NJ/py_Oracle/bugdb/triage/lib/python2.7/site-packages/django/core/management/base.py", line 283, in run_from_argv
self.execute(*args, **cmd_options)
File "/scratch/njakkula/NJ/py_Oracle/bugdb/triage/lib/python2.7/site-packages/django/core/management/commands/sqlmigrate.py", line 33, in execute
return super(Command, self).execute(*args, **options)
File "/scratch/njakkula/NJ/py_Oracle/bugdb/triage/lib/python2.7/site-packages/django/core/management/base.py", line 330, in execute
output = self.handle(*args, **options)
File "/scratch/njakkula/NJ/py_Oracle/bugdb/triage/lib/python2.7/site-packages/django/core/management/commands/sqlmigrate.py", line 62, in handle
sql_statements = executor.collect_sql(plan)
File "/scratch/njakkula/NJ/py_Oracle/bugdb/triage/lib/python2.7/site-packages/django/db/migrations/executor.py", line 219, in collect_sql
with self.connection.schema_editor(collect_sql=True, atomic=migration.atomic) as schema_editor:
File "/scratch/njakkula/NJ/py_Oracle/bugdb/triage/lib/python2.7/site-packages/django/db/backends/sqlite3/schema.py", line 25, in __enter__
self._initial_pragma_fk = c.fetchone()[0]
TypeError: 'NoneType' object has no attribute '__getitem__'

**Versions:**

Python **2.7.13**

Django **1.11**

sqlite3 **2.6.0**

/r/djangolearning
https://redd.it/68fbvp

Why did Flask run past CherryPy?

I've been wondering this off and on for awhile. I've been a user of
Python before Flask existed and CherryPy served me well then. And it
still does now. I simply don't understand what motivated the creation
of Flask when CherryPy already existed. And I certainly dont
understand why anyone who did a point-for-point comparision of
frameworks before choosing one would choose Flask, save for popularity
of the author.

The first thing I notice about Flask is manual routing whereas
CherryPy has automatic routing by default. That seems like a step
backward not forward.

The rest of my observations about the 2 microframeworks I will post as
a reply
to
[Eric Larsen's post on the subject](http://ionrock.org/2014/12/19/flask_vs_cherrypy.html).

> I suspect the reason CherryPy is not seen a hip framework is due to
> most users of CherryPy happily work around the rough edges and get
> work done rather than make an effort market their framework of
> choice.

I agree that CherryPy is not popular. I dont know what rough edges you
are taking about. It works fine for me.

> The best thing I can say about Flask is the community of projects.

Seconded. There are a lot of downloadable flask apps and plugins.

> Flask-Admin is extremely helpful along side Flask-SQLAlchemy.

Yes, I really like an automatic admin interface. That is the one thing
I miss from Django. And what I disliked about Django (`settings.py`)
is solved by something called `importd` (but I cant find a link to
it). But what I see as unsolveable by Django is that the ORM is not SQLAlchemy and I refuse to have things like "Stale MySQL handle" errors... anyway, back to the CherryPy/Flask topic of this post.

> Unfortunately, while this wealth of excellent community packages is
> excellent, Flask falls short when it comes to actual
> development. Its lack of organization in terms of dispatching makes
> organizing code feel very haphazard. It is easy to create circular
> dependencies due to the use of imports for establishing what code
> gets called. In essence, Flask forces you to build some patterns
> that are application specific rather than prescribing some models
> that make sense generally.

> While a lack of direction can make the organization of the code less
> obvious, it does allow you to easily hook applications together. The
> Blueprint model, from what I can tell, makes it reasonably easy to
> compose applications within a site.

Hmm, being able to mount applications is a big thing and if Flask
forces you through a tube to do it, then that sounds like an OK
thing.


/r/Python
https://redd.it/68ff8b

How do I make my package available to do 'conda install XXXX'? I already got 'conda install -c jos_pol pandas-profiling' working

Hi all,

Does anybody know how to register a package in the main Anaconda channels? I already got

> conda install -c jos_pol pandas-profiling

working. Ideally, i would like to have instead

> conda install pandas-profiling

Just like with pip you just have

>pip install pandas-profiling

Is that even possible or is it restricted to a manually curated list by the Anaconda folks?

/r/pystats
https://redd.it/68eojb