Best of /r/Python 2017

This is our Best of 2017 thread.

Submit things that you loved about /r/Python this year. It can be people, posts, comments, or whatever you want, as long as it is something that is in this subreddit.

Going to keep this post stickied until January 2nd, then hand out some gold to the people that the votes tell us are the best!

Merry Christmas everyone!

/r/Python
https://redd.it/7lyxpw

Jupyter Auto Starting in Atom Terminal

Not sure if this is the right place to post this but I thought I'd try.

Whenever I run the terminal in atom, it automatically starts a jupyter notebook. Not sure why this happens but its really annoying.

I also opened just a terminal window directly. It opened fine but this was the second line in the window:

env: jupyter-notebook: No such file or directory


Not sure what's going on here... Any help would be appreciated!

/r/Python
https://redd.it/7lz9rm

How to read CSV file in Python
https://www.alexkras.com/how-to-read-csv-file-in-python/

/r/Python
https://redd.it/7m0164

context in class-based views

So I recently switched to class based views, and found this code to pass in additional context to template:

class DetailView(generic.DetailView):
model = Language

template_name = 'languages/detail.html'

def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)

context['year'] = Details.objects.filter(year=2016)

return context

However, I fail to be able to display values/the variable in the HTML. How do i go about this in template.html?

/r/django
https://redd.it/7m01au

[News] New NVIDIA EULA prohibits Deep Learning on GeForce GPUs in data centers.

According to German tech magazine golem.de, the new NVIDIA EULA prohibits Deep Learning applications to be run on GeForce GPUs.

Sources:

https://www.golem.de/news/treiber-eula-nvidia-untersagt-deep-learning-auf-geforces-1712-131848.html

http://www.nvidia.com/content/DriverDownload-March2009/licence.php?lang=us&type=GeForce

The EULA states:

"No Datacenter Deployment. The SOFTWARE is not licensed for datacenter deployment, except that blockchain processing in a datacenter is permitted."

EDIT: Found an English article: https://wirelesswire.jp/2017/12/62708/





/r/MachineLearning
https://redd.it/7ly5gi

An example of Django project with login, registration, password change, log out, and password reset functionality [UPDATE 3.0]
https://www.reddit.com/r/django/comments/7kwy9w/an_example_of_django_project_with_login/

/r/djangolearning
https://redd.it/7m0yus

Django's autoreload function is unusably slow

Hello.

I have never had this problem in the past, but I am starting a new project and Django's autoreload feature (where it restarts the server after a code change) has been ridiculously slow (15 seconds - never). I am using WSL. I think this is something new with Django 2.0.

/r/django
https://redd.it/7m0gqu

Python Programming Tutorial File handling part 18
https://www.youtube.com/attribution_link?a=-oXb0WRNZas&u=%2Fwatch%3Fv%3DE24pt9bE-NM%26feature%3Dshare

/r/Python
https://redd.it/7m117q

My django related question got me a badge on Stacko!

/r/django
https://redd.it/7m1e8u

Open-source cryptocurrency portfolio manager written in Flask!
https://github.com/anfederico/cryptoview

/r/Python
https://redd.it/7m18d0

Wishing merry Christmas using Python Turtle Script
http://thepythondjango.com/python-script-6-wishing-merry-christmas-using-python-turtle/

/r/django
https://redd.it/7m62t9

Django Rest API - writing to FK based

I have two models as below:

class University(models.Model):
name = models.CharField(max_length=50)

class Meta:
verbose_name = "University"
verbose_name_plural = "Universities"

def __str__(self):
return self.name

def __unicode__(self):
return self.name


class Student(models.Model):
first_name = models.CharField(max_length=50)
last_name = models.CharField(max_length=50)
university = models.ForeignKey(University, on_delete = models.SET_NULL, null = True)

class Meta:
verbose_name = "Student"
verbose_name_plural = "Students"

def __str__(self):
return '%s %s' % (self.first_name, self.last_name)

def __unicode__(self):
return '%s %s' % (self.first_name, self.last_name)



class UniversitySerializer(serializers.ModelSerializer):
class Meta:
model = University
fields = '__all__'

class StudentSerializer(serializers.ModelSerializer):
university = serializers.SlugRelatedField(slug_field = 'name', queryset = University.objects.all())

class Meta:
model = Student
fields = '__all__'

I want to be able to access the forms that are generated by the browsable API in angularJS or any of the front end frameworks.

Can someone please nudge me into the right direction?

It's something most likely very simple however, I am lost as I am very new to this.

Many thanks in advance

/r/djangolearning
https://redd.it/7lw5xb

Any idea on how to implement forest with Function based views? (beginner here)

I want to implement formset to add manytomanyfield in one class table. how can i achieve it? I [found one](https://medium.com/@adandan01/django-inline-formsets-example-mybook-420cc4b6225d) but it is using class based views, and i don't understand it yet.

can you help me here?

/r/djangolearning
https://redd.it/7lv0um

Anyone have any tricks to understanding and using classes in Python? I keep writing functions, instead. Why should I start using classes?



/r/Python
https://redd.it/7m4hlq

request.url

I am trying to get the url using request.url. It prints out

http://127.0.0.1:5058/blah/blah

But my url has

localhost/blah/blah

How can I get localhost/blah/blah and not 127.0.0.1

/r/flask
https://redd.it/7m7lhm

How to use StreamField in Wagtail CMS
https://blog.michaelyin.info/2017/12/25/how-use-streamfield-wagtail/

/r/django
https://redd.it/7m7rm6

Any Django Expert I can have a chat with?

I have been making websites with Django for almost a year now, and needed a professional ~~mentor~~ to talk to.

if you can help or are free, please comment or message me.

/r/djangolearning
https://redd.it/7m7xlb

At my wits end debugging this SQL syntax error

I'm making a web application in Django, using a MySQL server for the database, and I keep getting a message that I have an error in my SQL syntax. I'm not writing any SQL queries. Django is doing that for me. I tried recreating the migration files and database, and I still get the same error, so I figure there must be an error in my models.py file, but I can't find it. The crazy part is, I'm working with a commit from a few days ago, and I don't remember getting this error then.

Does anyone know what I might be doing wrong?

Here's my repository on GitHub:
https://github.com/WolfElkan/hst3

And here's the error I'm getting, along with the full traceback:

Applying contenttypes.0001_initial... OK
Applying auth.0001_initial... OK
Applying admin.0001_initial... OK
Applying admin.0002_logentry_remove_auto_add... OK
Applying contenttypes.0002_remove_content_type_name... OK
Applying auth.0002_alter_permission_name_max_length... OK
Applying auth.0003_alter_user_email_max_length... OK
Applying auth.0004_alter_user_username_opts... OK
Applying auth.0005_alter_user_last_login_null... OK
Applying auth.0006_require_contenttypes_0002... OK
Applying auth.0007_alter_validators_add_error_messages... OK
Applying auth.0008_alter_user_username_max_length... OK
Applying main.0001_initial...Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/core/management/__init__.py", line 367, in execute_from_command_line
utility.execute()
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/core/management/__init__.py", line 359, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/core/management/base.py", line 294, in run_from_argv
self.execute(*args, **cmd_options)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/core/management/base.py", line 345, in execute
output = self.handle(*args, **options)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 204, in handle
fake_initial=fake_initial,
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/db/migrations/executor.py", line 115, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/db/migrations/executor.py", line 145, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/db/migrations/executor.py", line 244, in apply_migration
state = migration.apply(state, schema_editor)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/db/migrations/migration.py", line 129, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/db/migrations/operations/models.py", line 96, in database_forwards
schema_editor.create_model(model)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/db/backends/base/schema.py", line 295, in create_model
s

elf.execute(sql, params or None)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/db/backends/base/schema.py", line 112, in execute
cursor.execute(sql, params)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/db/backends/utils.py", line 79, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute
return self.cursor.execute(sql, params)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/db/backends/utils.py", line 62, in execute
return self.cursor.execute(sql)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/django/db/backends/mysql/base.py", line 110, in execute
return self.cursor.execute(query, args)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/MySQLdb/cursors.py", line 205, in execute
self.errorhandler(self, exc, value)
File "/Users/Wolf/Desktop/Education/CodingDojo/PYTHON/myEnvironments/djangoEnv/lib/python2.7/site-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler
raise errorclass, errorvalue
django.db.utils.ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '() NOT NULL, `birthday` date NOT NULL, `grad_year` numeric(4, 0) NULL, `height` ' at line 1")


/r/django
https://redd.it/7m95tl

What's everyone working on this week?

Tell /r/python what you're working on this week! You can be bragging, grousing, sharing your passion, or explaining your pain. Talk about your current project or your pet project; whatever you want to share.


/r/Python
https://redd.it/7m7xmi