Save Rendered Templates in Flask

Flask:

We can return multiple types of responses using flask like HTTP Responses , XML responses and Templates responses.

Consider the use case like you wanted to save html pages which are dynamically rendered

Packages required:

1. jinja2

2. Flask

Create a Folder structure:

Template

|- image

|- fonts

|- js

index.html

index.html:

<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>
<h1>{{name}}</h1>
<p>{{address}}</p>
</body>
</html>

code:

#imports

from jinja2 import Environment, select_autoescape, FileSystemLoader

#fetch the index.html file using the FilesystemLoader

path = os.path.dirname(os.path.abspath(__file__))

env = Environment(loader=FileSystemLoader(path),

autoescape=select_autoescape(('html', 'xml')),

trim_blocks=True)

template = env.get_template('index.html')

path = os.path.join("/".join(path.split('/')[:-1]), "Template")

template = env.get_template('index.html')

# Apply the dynamic content

template.stream(name="google",address="www").dump(path + '/dynamic.html')

This .dump fucntion will save the dynamically rendered html page to give path

Comments

MQTT set up Flask

MQTT Introduction: It is message broker which holds the data when ever a consumer will connected to the topic then he will receive the data . mqtt is a machine to machine message broker, mainly used in IOT application, the default port is 1883 Installation: sudo apt-get update sudo apt-get install mosquitto Command line execution: Producer mosquitto_pub -h 127.0.0.1 -t 'topic_name' -m '{'name':'Sony'}' Subscriber mosquitto_sub -h 127.0.0.1 -t 'topic_name' -h : it is the host address -t : topic name -m : message payload QOS in MQTT: QOS(quality of services) there are mainly 3 services are available in mqtt qos=0 qos=1 qos=2 QOS (0,0): At most once service, publisher will send a message to broker at most once, the broker passes a message to subscriber one time

CommandLine Args In Python

Command line args in Python : When the program comes to Python , it's all about libraries .Argparser is the library used for the taking inputs from the command line. Here you can validate the arguments which are entered by the user without writing the another function to validate from the if conditions. suppose give a filename like cmdprocess.py You can give the expecting arguments like below cmdprocess.py --help it will give the total arguments with respective commands to represent Required =True : When the required is true. You have to enter the argument. Type = function name: Type is very useful to validate the input entered by the user. so that you can send a message like user need to enter the defined arguments only. This function always expects the input argument . Custom-Exceptions In Python: There are multiple exception...

Swagger set up for FLASK

Flask A Micro framework , where everything is customized, if we want to use restful api's we can add flask-restful library, or we wanted to go by rest plus we can use rest plus library After writing the all api's we need something to test the api's and it should contain all the required parameters like schema , for these things we can use swagger project structure should be add service __init__.py below code for swagger load app = Flask(__name__ , instance_relative_config = True ) CORS(app) # swagger specific SWAGGER_URL = '/swagger' API_URL = '/static/swagger.yml' SWAGGERUI_BLUEPRINT = get_swaggerui_blueprint( SWAGGER_URL , API_URL , config ={ 'app_name' : "service Name" } ) add the blue print app.register_blueprint(SWGGER_BLUPRINT, url_prefix=SWAGGER_URL) Start the service python app.py on the default port 5000 it will load and endpoint /swagger 127.0.0.1:5000/swagger

Dive into Learning

Search This Blog