In mathematics, we use the symbol × to multiply numbers. It is the standard symbol for multiplication and it is called the multiplication sign. When we put the Python programming language into the picture, the symbol disappears but the multiplication…
It is a bit straightforward to convert from binary to decimal in Python, but it can also be a little confusing for beginners, especially those who did not understand the conversion formula from the Maths or Computer Science class. In…
The Python Newline character is a special Python character that produces line breaks. It is made up of a backslash and the letter n (\n). All characters in a string that appear after the newline character will be printed on…
If you come across an error like this: TypeError: list indices must be integers or slices, not str? Do not worry, it is just hinting that you have used the wrong data type (in this case, a string) as an…
Iterating over lists or any other collections of data, such as dictionaries, or tuples, is a common coding task. But before you do so, it is also quite useful to start by checking if the list you want to iterate…
In Python and other programming languages, to trim whitespace is to remove any extra blank or empty space around a word or character in a string. In Python, we use the function strip() and its younger siblings lstrip() and rstrip()…
A block of code is a snippet of code that spans across multiple lines. This then means a Python block comment is a snippet of consecutive lines of code that are marked in a certain way to indicate to a…
I mentioned an error called: typeerror: __init__() missing 1 required positional argument: ‘on_delete’ in my post about the significance of the Django on_delete argument and its 7 options. But that was just mentioned, I did not really explain why the…
You may have used the Django on_delete argument in almost every Django project you’ve built. Most of us certainly have, but most of us probably have no idea what this ‘django on_delete’ argument does. This is because whenever we use…
This post will explain the Django blank vs null concept. The difference between blank=True and null=True is a confusing concept in Django models and this post will demystify it. What does null mean? Null in Database management basically means a…