A way to auto generate more forms? Or is there another way?

Basically I want a user to be able to fill out an Invoice, and you can enter in Labor or a Product with a quantity and how much labor costs. There will be multiple products and labor codes.

Ie.

Quantity: 2 - Product Description - Unit Cost: $5/ea - Total: $10

Quantity: 10 - Product Description - Unit Cost: $.02/ea - Total: $0.20

Quantity: 1.5 - Labor Description - Per Hour: $35/hour - Total: $52.50


Should I have a row form generate after each one is filled out, or is there a better way to just enter all the data together in one form while being broken out for customer and business to see?

/r/django
https://redd.it/6ypzwq

[N] Microsoft and Facebook create open ecosystem for AI model interoperability
https://www.microsoft.com/en-us/cognitive-toolkit/blog/2017/09/microsoft-facebook-create-open-ecosystem-ai-model-interoperability/

/r/MachineLearning
https://redd.it/6yosis

Google Search unofficial API for Python with no external dependencies
https://github.com/aviaryan/python-gsearch

/r/Python
https://redd.it/6yom38

[Python-Dev] PEP 552: deterministic pycs
https://mail.python.org/pipermail/python-dev/2017-September/149313.html

/r/Python
https://redd.it/6yq7t2

DRF serialization not working on many to many with through models

I have models with many-to-many relationships with a through model. I am trying to set up a DRF serializer to display this data, but I am getting an error message whenever I try to render the API.

# models.py - simplified

class Person(models.Model):
first_name = models.CharField(max_length=250)
last_name = models.CharField(max_length=250)
status = models.IntegerField(choices=STATUS_CHOICES)
village = models.ForeignKey(Village)
gender = models.IntegerField(choices=GENDER_CHOICES)


class Case(models.Model):
summary = models.TextField()
session = models.ForeignKey(Session, on_delete=models.CASCADE)
case_type = models.ForeignKey(CaseType)
court_type = models.IntegerField(choices=COURT_TYPES)
verdict = models.ForeignKey(Verdict)
litigants = models.ManyToManyField(Person, through='Litigant', related_name='litigants')


class Litigant(models.Model):
person = models.ForeignKey(Person, on_delete=models.CASCADE)
case = models.ForeignKey(Case, on_delete=models.CASCADE)
role = models.ForeignKey(Role)
fine = models.ForeignKey(Money, null=True, related_name='fine')
notes = models.TextField()

My serializers.py looks as such:

# serializers.py - simplified

class LitigantSerializer(serializers.ModelSerializer):

class Meta:
model = Litigant
fields = ('id', 'person', 'case', 'role', 'fine', 'notes')


class CaseSerializer(serializers.ModelSerializer):

litigants = LitigantSerializer(many=True, read_only=True)

class Meta:
model = Case
fields = ('id', 'summary', 'session', 'case_type', 'court_type', 'verdict', 'litigants')


class PersonSerializer(serializers.ModelSerializer):

class Meta:
model = Person
fields = ('id','first_name', 'last_name', 'village', 'status', 'gender')

My views.py is:

# views.py - simplified.

class PersonViewSet(viewsets.ModelViewSet):
queryset = Person.objects.all().order_by('village__name', 'last_name', 'first_name')
serializer_class = PersonSerializer


class CaseViewSet(viewsets.ModelViewSet):
queryset = Case.objects.all().order_by('session__village__name', 'session__date', 'court_type')
serializer_class = CaseSerializer


class LitigantViewSet(viewsets.ModelViewSet):
queryset = Litigant.objects.all().order_by('case__session__village__name', 'case__session__date', 'person__last_name',
'person__first_name')
serializer_class = LitigantSerializer

However, when I navigate to api/cases/ I receive the following error:

'RelatedManager' object has no attribute 'pk'

What is more annoying, is that when I only include id and notes in LitigantSerializer, only the id shows up... The notes are nowhere to be found.

Thank you for any help!


/r/django
https://redd.it/6yrh9k

Getting Started With Django Channels
https://realpython.com/blog/python/getting-started-with-django-channels/

/r/Python
https://redd.it/6ysf2e

PEP 554 -- Multiple Interpreters in the Stdlib
https://www.python.org/dev/peps/pep-0554/

/r/Python
https://redd.it/6yp7kv

Python REST API with Flask
https://sourcedexter.com/python-rest-api-flask/

/r/Python
https://redd.it/6ytpcd

Functional linked lists in Python
https://dbader.org/blog/functional-linked-lists-in-python

/r/Python
https://redd.it/6ytmey

[AF] How to display a Tree-data structure.

The Title already says almost everything.

I got this simple Tree Data structure where there are nodes and edges and want to display them. I don t know if it s possible to do this with jinja2 or some Flask Framework, could not find anything with google.

Any help, even knowing that it s not possible with Flask to do that, is appreciated

/r/flask
https://redd.it/6ytp97

A utility for organizing your downloads directory
https://github.com/chriscz/pysorter

/r/Python
https://redd.it/6yttvj

Python Namesilo module

Hello,

I'm developing Python module (api wrapper) for [Namesilo service](https://www.namesilo.com/api_reference.php). It's open source and it's my first module in Python. I'm looking for some advice what to improve, what am I doing wrong or right. You can find module on my github [python-namesilo](https://github.com/goranvrbaski/python-namesilo)

Thanks!

/r/Python
https://redd.it/6yuiai

The gamification package Django has been missing
https://github.com/mattjegan/django-gamification

/r/django
https://redd.it/6yu953

PEP 557 -- Data Classes
https://www.python.org/dev/peps/pep-0557/

/r/Python
https://redd.it/6yvf5e

PyNomaly: outlier / anomaly detection using Local Outlier Probabilities (LoOP)

Hi all! I've been lurking on this sub for a little while now and thought I'd post a side project I have been working on. It's called PyNomaly, which uses Local Outlier Probabilities (LoOP) to score individual data points on the probability that they are an outlier. You can check it out [here](https://github.com/vc1492a/PyNomaly).

I'm looking for some feedback and folks that could try it out, do some testing and open some issues if there are any. Would appreciate some feedback from the community so I can improve the package! I hope some of you find it useful.



/r/pystats
https://redd.it/6yvu6m

PEP 556 -- Threaded garbage collection
https://www.python.org/dev/peps/pep-0556/

/r/Python
https://redd.it/6yvea0

Paco - a coroutine-based library for concurrent programming based on asyncio with a clean api

I just wanted to give a shout-out to what I think is an excellent library that deserves more attention.

Utilizing the stdlib's asyncio module but providing a clean, functional api on top of it is a dream.

I highly recommend people take a look


https://github.com/h2non/paco

/r/Python
https://redd.it/6yx16r

Show r/python: wav2vec, a script/package for converting wave files to vector graphics
https://github.com/cristoper/wav2vec

/r/Python
https://redd.it/6yy2iq

How to Generate FiveThirtyEight Graphs in Python
https://www.dataquest.io/blog/making-538-plots/

/r/Python
https://redd.it/6yxw95

beginners guide

iam looking for a pdf to learn python iam using rasberry pi 3+.It comes with two software packages python 2.7.9 and python3.4.2
Thanks for any tips

/r/Python
https://redd.it/6z0ccr