build an entire app with a single api graphql python tutorial

creating a complete application using graphql with python can be an exciting project. in this tutorial, i'll guide you through building a simple graphql api using flask and graphene, a popular library for building graphql apis in python. this api will allow users to manage a list of books.

prerequisites

1. **python**: make sure you have python installed (preferably version 3.6 or higher).
2. **flask**: a lightweight wsgi web application framework.
3. **graphene**: a python library for building graphql apis.

step 1: setting up the environment

1. **create a new directory for your project**:
```bash
mkdir graphql_flask_app
cd graphql_flask_app
```

2. **create a virtual environment** (optional but recommended):
```bash
python -m venv venv
source venv/bin/activate on windows use `venv\scripts\activate`
```

3. **install the required packages**:
```bash
pip install flask graphene flask-graphql
```

step 2: create the flask application

```python
from flask import flask
from flask_graphql import graphqlview
from graphene import objecttype, string, schema, list, field

app = flask(__name__)

sample data
books = [
{"id": 1, "title": "1984", "author": "george orwell"},
{"id": 2, "title": "to kill a mockingbird", "author": "harper lee"},
{"id": 3, "title": "the great gatsby", "author": "f. scott fitzgerald"},
]

class book(objecttype):
id = string()
title = string()
author = string()

class query(objecttype):
books = list(book)
book = field(book, id=string(required=true))

def resolve_books(self, info):
return books

def resolve_book(self, info, id):
for book in books:
if book['id'] == int(id):
return book
return none

schema = schema(query=query)

'/graphql',
...

#GraphQL #PythonTutorial #windows
in a pickle
a pinch
in spite of ourselves
in api
in api url
in a pickle meaning
in spirit
in api request
in spite
in app purchase meaning
in application
in app purchases not allowed
in appreciation of or for
in appositional growth of cartilage
in app
in app purchases iphone
in apprehension how like a god
in applying lcm market cannot be