How to write csv file without the brackets showing in the file itself

Question

I'm writing data to a csv file, but somewhere I keep on getting the "(...)" in my file. How do I get rid of those?

The Snumber, Qnumber, Dnumber, Inumber, Pnumber are variables from a previous function that has some basic calculations, of which I want to use the outcome of.

I know it's because of the list in "entry_texts.append([Snumber, Qnumber, Dnumber, Inumber, Pnumber])"

##Buttons
entry_fields = (PC_label_var, cal, Shift, NameNumber1, Safetyentry, Qualityentry, Quality2entry, Deliveryentry, Delivery2entry, Inventoryentry,
                Productivityentry, Productivity2entry, Productivity3entry, Remarkstxt)

def save_file():
    # Ask the user for confirmation to save
    response_save = tkinter.messagebox.askyesno("Save Confirmation", "Wilt u opslaan?")
    
    if response_save:
        # User clicked "Yes," proceed with saving
        entry_texts = []
        for entry in entry_fields:
            if isinstance(entry, tk.StringVar):
                entry_texts.append(entry.get())
            elif isinstance(entry, tk.Text):
                entry_texts.append(entry.get("1.0", "end-1c"))
            else:
                entry_texts.append(entry.get())

        entry_texts.append([Snumber, Qnumber, Dnumber, Inumber, Pnumber])

        write_to_csv(entry_texts)

        # Ask the user if they want to shut down the application
        response_shutdown = tkinter.messagebox.askyesno("Shutdown Confirmation", "Wilt u het programma afsluiten?")
        if response_shutdown:
            root.destroy()  # Close the main application window
    else:
        # User clicked "No" or closed the dialog, don't save the data
        print("Data not saved")

I tried various ways of recreating that list with different brackets, but to no avail