Python Flask Interview Questions

Flask is a micro framework for web which light in weight and a second popular framework of Python after Django. It is completely written in Python programming language and does not require any particular tools or libraries to install. Below we have listed the top 25 Python flask interview questions and answers that may encounter in your next interview.

 

  • 1

    What is Flask-WTF?
    Python Flask

    Posted By: Waldo

    Flask-WTF is an extension that provides a simple interface for creating form elements with the WTForms library. Using Flask-WTF, we can define the form fields in our Python script and render them using an HTML template. It is also possible to apply validation to the WTF field.

  • 2

    For what python flask is used?
    Python Flask

    Posted By: Jarrett

    Python Flask is a lightweight microframework of Python. Flask can be used for

    • Creating web services.
    • Blogging websites.
    • Company intro websites.
    • Twitter Bots.
    • CMS for the website.

  • 3

    How to install python flask on linux?
    Python Flask

    Posted By: Ethel

    Simple steps to install Flask on the Linux server.

    • Step 1. Install Python 3 or above and venv.
    • Step 2. Create a project directory and Virtual Environment.
    • Step 3. Install Flask by running pip install Flask

    That's it.

    For complete step by step tutorial visit https://linuxize.com

  • 4

    How to deploy python flask app on Heroku?
    Python Flask

    Posted By: Haridass

  • 5

    How to structure python flask project?
    Python Flask

    Posted By: laxmi

  • 6

    How to check request is json type in flask?
    Python Flask

    Posted By: WilliamyxVioto

  • 7

    What is Jsonify in flask?
    Python Flask

    Posted By: fernandofarmer

  • 8

    How to change Flask server host/port using config file?
    Python Flask

    Posted By: Cas

  • 9

    How to log request body in python flask?
    Python Flask

    Posted By: Bryanblina

  • 10

    How to divide flask app into multiple py files?
    Python Flask

    Posted By: Dixon

  • 11

    Is python flask multithreaded?
    Python Flask

    Posted By: brij

  • 12

    How to create an array with checkboxes in Flask?
    Python Flask

    Posted By: Maxwell

  • 13

    How to get visitor ip address in Flask?
    Python Flask

    Posted By: Merle

  • 14

    What is g in python flask?
    Python Flask

    Posted By: S.K.Mahalingam

  • 15

    What is Flask Sijax?
    Python Flask

    Posted By: raghu

  • 16

    For what url_for() function is used in Flask?
    Python Flask

    Posted By: Godfrey

  • 17

    What is WSGI?
    Python Flask

    Posted By: Aden

  • 18

    How to get http headers in flask?
    Python Flask

    Posted By: Larry

  • 19

    How to serve static files in Flask?
    Python Flask

    Posted By: Ernest

    The recommended way to serve a static file in Flask is to serve using web server. However, if you want it to be done via Flask then you can use send_from_directory the function of Flask.

    Below is a Simple code to serve static files in Flask.

    from flask import Flask, request, send_from_directory

# set the project root directory as the static folder, you can set others.
app = Flask(__name__, static_url_path='')

@app.route('/js/')
def send_js(path):
    return send_from_directory('js', path)

if __name__ == "__main__":
    app.run()

  • 20

    How to get a query string in Flask?
    Python Flask

    Posted By: Larry

  • 21

    How to import function into main file in flask?
    Python Flask

    Posted By: Tom

  • 22

    How to disable csrf for a view with flask-wft for a restapi?
    Python Flask

    Posted By: James

  • 23

    How to share the global app object in flask?
    Python Flask

    Posted By: Esequiel

  • 24

    What is the purpose of Flask's context stacks?
    Python Flask

    Posted By: Arvid

  • 25

    How to get logged user id in flask?
    Python Flask

    Posted By: Axel

    Use the below code to get a logged user id in Flask Framework.

    from flask import g

if current_user.is_authenticated():
        g.user = current_user.get_id()

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