When using model forms you can save values entered into a form by calling the form’s save() method as shown below. If you are not using model forms an attempt to call form.save() results in an error such as: The save() method works with model forms because there is a […]
I recently ran into problems SQL Developer 21.2.0187 running on macOS Catalina, not sure what had changed but the problems manifested as: Typing into SQL Worksheet was sluggish to the point of unusable, especially using the backspace. Within preferences it was not possible to view a number of screens such […]
On several occasions the useful feature of opening the current folder in a terminal session from File Manager by pressing F4 had stopped working. This problem can appear either by displaying an error similar to the screen shot above or no error is displayed and nothing happens, the terminal session […]
When you start to use VS Code to debug a Django project you may bump into the exception shown in the screenshot above Exception has occurred: ImportError Couldn’t import Django. Are you sure it’s installed and available This post explains how to reproduce the problem and how to resolve it. […]
I have been working through Reindert-Jan Ekker excellent Plurasight course Pandas Playbook: Manipulating Data and right at the end of Demo: Detecting and Inspecting Missing Values, part of Module 5 Cleaning data, he asks the following question: # Can you rewrite this line to use df.loc? df[‘MIN_TEMP_GROUND’].drop(every_6th_row).isnull().all() True This code […]
