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Are you willing to explore Python flask job opportunities? Do you have experience as Flask Python Developer then log on to www.wisdomjobs.com. Flask is a micro web framework written in Python and based on the Werkzeug – handling various open authentication technologies and several common framework related tools. The latest version of Flask is 1.0 as of April 2018. It does not require particular tools or libraries. It has no database abstraction layer, form validation or any other components where pre existing third party libraries provide common functions. Flask supports extensions that can add application features as if they were implemented in Flask itself. Extensions exist for object relational mappers, form validations, upload handling various open authentication technologies and several common framework related tools. So, grab the opportunity of working in the field of Flask as Full Stack Developer, Software engineer, Data Scientist, Flask Engineer and so on by looking into Flask job interview question and answers given.
Flask is a web micro framework for Python based on “Werkzeug, Jinja 2 and good intentions” BSD licensed. Werkzeug and jingja are two of its dependencies.
Flask is part of the micro-framework. Which means it will have little to no dependencies on external libraries. It makes the framework light while there is little dependency to update and less security bugs.
Flask is a “microframework” primarily build for a small application with simpler requirements. In flask, you have to use external libraries. Flask is ready to use.
Pyramid are build for larger applications. It provides flexibility and lets the developer use the right tools for their project. The developer can choose the database, URL structure, templating style and more. Pyramid is heavy configurable.
Like Pyramid, Django can also used for larger applications. It includes an ORM.
Flask-WTF offers simple integration with WTForms. Features include for Flask WTF are:
The common way for the flask script to work is:
Either it should be the import path for your application
Or the path to a Python file
A session basically allows you to remember information from one request to another. In a flask, it uses a signed cookie so the user can look at the session contents and modify. The user can modify the session if only it has the secret key Flask.secret_key.
Basically, Flask is a minimalistic framework which behaves same as MVC framework. So MVC is a perfect fit for Flask, and the pattern for MVC .
we will consider for the following example:
from flask import Flask
app = Flask(_name_)
return “Hello World”
app.run(debug = True)
In this code your, Configuration part will be from flask import Flask
app = Flask(_name_)
View part will be
return “Hello World”
While you model or main part will be app.run(debug = True)
Flask uses thread local objects internally so that user don’t have to pass objects around from function to function within a request in order to stay threadsafe. This approach is useful, but it requires a valid request context for dependency injection or when attempting to reuse code which uses a value pegged to the request.
Flask supports database powered application (RDBS). Such system requires creating a schema, which requires piping the shema.sql file into a sqlite3 command. So you need to install sqlite3 command in order to create or initiate the database in Flask.
Flask allows to request database in three ways:
There are two ways you can enable debugging in Flask.
If you enable debug support the server will reload itself when code changes and you don’t have to manually restart after each change to the code.
You can use questions marks while building SQL statements, it will protect SQL statements from the vulnerability of SQL injections.
In Flask, the view function will pass the entries as dicts to the show_entries.html template and return the rendered one.
To get query string from flask, here we want to get the value of user so we will follow the steps as below:
from flask import request
def data ( ) :
user = request.arg.get (‘user’)
“@app.route” , the syntax is used in Flask to match URLs to view functions in Flask apps.
Sijax is nothing but a Python/jQuery library to make Ajax easy to use in web applications. Sijax uses JSON to pass data between the server and the browser.
“g” is data shared between different parts of the code base within one request cycle. For example, a database connection or the user that is currently logged in. While session provides you a storage place to store data for a specific browser. Which means using a specific browser, returns for more request.
A request context can be created by either
Automatically when the application receives a request
OR manually, by calling app.test_request_context (‘/route?param=value)
To show all errors in the browser for the Flask, you need to run the Python file on the shell. The command used to see errors in detail is “app.debug = True”.
To structure a large flask application, here are the following steps:
Flask Related Tutorials
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Flask Related Interview Questions
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