I’m trying to customize django’s AbstractUser. When I try to reset username to None, I get the following exception: Here is my code: What can I do to solve this problem? Answer You haven’t set a value for USERNAME_FIELD in your code. This must be set to a field that uniquely identifies a use…
Best practice/way to get value where id = something on a list of dictionaries
I have the following list of dictionaries: I would like to get the value where id = xxxxxxxxxxxx. Which would be the fastest way? Answer One possible solution is to use next() built-in method: Prints: Or: If you search multiple times, it’s worth considering transforming the list to dictionary:
Performance tuning: string wordcount in df
I have a df with column “free text”. I wish to count how many characters and words each cell has. Currently, I do it like this: Problem is, that it is pretty slow. I thought about using np.where but I wasn’t sure how. Would appreciate your help here. Answer IIUC: you can try via str.len() an…
Group by Issue with Years Pandas
I’m following the answer for this StackOverflow post to group a column of years by decades to make it easier for me to visualize later, but I’m not getting the same results. It seems like when DSM did it, it yielded integers for years, while mine is yielding floats for years. I’ve implemente…
How to open a folder in Ranger with explorer.exe (Cygwin)
In windows when you use ranger(by using cygwin), how can you open folders with explorer.exe? I mean when you press r on a folder, it will ask you to open-width a command, but if you write explorer.exe “$1” it doesn’t open it, how can we do it? Answer Because the paths in windows and Linux ar…
Pandas: efficiently inserting a large number of rows
I have a large dataframe in this format, call this df: index val1 val2 0 0.2 0.1 1 0.5 0.7 2 0.3 0.4 I have a row I will be inserting, call this myrow: index val1 val2 -1 0.9 0.9 I wish to insert this row 3 times after every row in the original dataframe, i.e.: index val1 val2 0
Get the value of the pressed button for QMessageBox addButton function
I am trying to write a function to better manage QMessageBoxes for the program I am designing. It takes a number of parameters and creates a custom QMessageBox based on those parameters. A simple form this function would be called will be like this: However, I am having trouble getting the value of the presse…
How can I make a button that goes to website in pygame?
I have a “Credits” menu in my pygame and I’d like to make some buttons that go to certain websites. What I mean is, when the button is clicked, it should open up, for example, GitHub (or whatever the link is). Is there a way I can achieve this? Answer Implement a Button class ans use the web…
How to automatically remove space before punctuation
For example: “This is some text . This is some text” should be “This is some text. This is some text” We can use replase but replacing ‘ .’ with ‘.’, but it’s not a good approach. Please let me know if you have any other idea which is generalised for any p…
Constants module, ran once
So I’m building a constants module that stores in dict some strings: Now to improve the module I want to retrieve the constants automatically, to reduce future maintenance. For this I use a method called get_constants() which returns a dict with the constants. So the module will be: Now to improve the p…