Category: Python Answers

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Python Answers

How to pass data from Python Flask to JavaScript in a template?

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Sometimes, we want to pass data from Python Flask to JavaScript in a template.

In this article, we’ll look at how to pass data from Python Flask to JavaScript in a template.

How to pass data from Python Flask to JavaScript in a template?

To pass data from Python Flask to JavaScript in a template, we can use the tojson filter.

For instance, we write

<html>
  <head>
    <script>
      var myGeocode = {{ geocode|tojson }};
    </script>
  </head>
  <body>
    <p>Hello World</p>
    <button onclick="console.log(myGeocode[0], myGeocode[1])" />
  </body>
</html>

to convert the geocode dictionary to JSON and assign it to myGeocode .

And then we use myGeocode as an object within our JavaScript code.

Conclusion

To pass data from Python Flask to JavaScript in a template, we can use the tojson filter.

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Python Answers

How to get IP address of visitors using Flask for Python?

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Sometimes, we want to get IP address of visitors using Flask for Python.

In this article, we’ll look at how to get IP address of visitors using Flask for Python.

How to get IP address of visitors using Flask for Python?

To get IP address of visitors using Flask for Python, we can use the request.remote_addr property.

For instance, we write

from flask import request
from flask import jsonify

@app.route("/get_my_ip", methods=["GET"])
def get_my_ip():
    return jsonify({'ip': request.remote_addr}), 200

to get the current client’s IP address with request.remote_addr.

Conclusion

To get IP address of visitors using Flask for Python, we can use the request.remote_addr property.

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Python Answers

How to access the query string in Python Flask routes?

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Sometimes, we want to access the query string in Python Flask routes.

In this article, we’ll look at how to access the query string in Python Flask routes.

How to access the query string in Python Flask routes?

To access the query string in Python Flask routes, we can use the request.args property.

For instance, we write

from flask import request

@app.route('/login')
def login():
    username = request.args.get('username')
    password = request.args.get('password')

to call request.args.get with the keys of the query parameters we want to get in our view function.

Conclusion

To access the query string in Python Flask routes, we can use the request.args property.

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Python Answers

How to get the named parameters from a URL using Python Flask?

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Sometimes, we want to get the named parameters from a URL using Python Flask

In this article, we’ll look at how to get the named parameters from a URL using Python Flask.

How to get the named parameters from a URL using Python Flask?

To get the named parameters from a URL using Python Flask, we can use the request.args property.

For instance, we write

from flask import request

@app.route('/login')
def login():
    username = request.args.get('username')
    password = request.args.get('password')

to call request.args.get with the keys of the query parameters we want to get in our view function.

Conclusion

To get the named parameters from a URL using Python Flask, we can use the request.args property.

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How to get a variable from the URL in a Python Flask route?

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Sometimes, we want to get a variable from the URL in a Python Flask route.

In this article, we’ll look at how to get a variable from the URL in a Python Flask route.

How to get a variable from the URL in a Python Flask route?

To get a variable from the URL in a Python Flask route, we can get it from the view function parameters.

For instance, we write

@app.route('/landingpage/<id>')
def landing_page(id):
    #...

to get the id URL parameter from the id parameter in the landing_page function.

We can use the url_for function to generate URLs for pages by writing

url_for('landing_page', id='A')

where the first argument is the view name.

Conclusion

To get a variable from the URL in a Python Flask route, we can get it from the view function parameters.