I am trying to access a certain member in a JavaScript object. In order to do this, I need to try out a couple of key values. For example, Object[‘text/html’] which will give me an export link for a HTML document. However, not every object of this type will have a text/html key pair value. In Pyth…
Tag: python
How to read and write JSON offline on local machine?
Problem I need a way to store and collect JSON data in an entirely offline(!) web application, hosted on a local (shared) machine. Several people will access the app but it will never actually be online. I’d like the app to: Read and write JSON data continuously and programmatically (i.e. not using a fi…
Flask url_for URLs in Javascript
What is the recommended way to create dynamic URLs in Javascript files when using flask? In the jinja2 templates and within the python views url_for is used, what is the recommended way to do this in .js files? Since they are not interpreted by the template engine. What basically want to do is: Which is not p…
Convert Python None to JavaScript null
In a Django view I am generating a data set something like this: I am passing this data to a JavaScript variable using: For use in a High Charts script. Unfortunately JavaScript is stumbling when it encounters the None value because actually what I need is null. How can I best replace None with null, and wher…
Reference error while including .js in .html in ubuntu using flask
I am trying to include a str.js and jit.js file in nev.html. Both are in same directories but it is giving me a reference error: flask file in flask/app1.py When I run it using flask, it gives this error: directory structure /flask/templates directory structure /flask str.js file nev.html Answer Keep css and …
Equivalent JavaScript functions for Python’s urllib.parse.quote() and urllib.parse.unquote()
Are there any equivalent JavaScript functions for Python’s urllib.parse.quote() and urllib.parse.unquote()? The closest I’ve come across are encodeURI()/encodeURIComponent() and escape() (and their corresponding un-encoding functions), but they don’t encode/decode the same set of special cha…
Django Template Variables and Javascript
When I render a page using the Django template renderer, I can pass in a dictionary variable containing various values to manipulate them in the page using {{ myVar }}. Is there a way to access the same variable in Javascript (perhaps using the DOM, I don’t know how Django makes the variables accessible…
Is there a benefit to defining a class inside another class in Python?
What I’m talking about here are nested classes. Essentially, I have two classes that I’m modeling. A DownloadManager class and a DownloadThread class. The obvious OOP concept here is composition. However, composition doesn’t necessarily mean nesting, right? I have code that looks something l…