Tkinter: How to handle new lines in a textarea and save them as a single entry?

I have a notes saving app on tkinter. When i write a para in my textarea then it is saving as a single entry in saved notes but when i use enter key like if i go to next line or we can say if i make a list, then each line is saving as a separate entry. How to resolve this. here is my save function

def save_note():
note = text.get("1.0", "end-1c")
if note:
    with open("notes.txt", "a") as file:
        file.write(note + "\n")
    text.delete("1.0", tk.END)
    text.see(tk.END)
    load_notes()
else:
    messagebox.showwarning("Leere Notiz", "Bitte geben Sie eine Notiz ein.")

You can simply change your text with replace function file.write(note.replace("\n", "") + "\n")

Try this way. It will work.

def save_note():
    note = text.get("1.0", tk.END).strip()
    note = note.replace('\n', ' ')
    note = note.replace('\r', '')
    if note:
        with open("notes.txt", "a") as file:
            file.write(note + "\n")
        text.delete("1.0", tk.END)
        text.see(tk.END)
        load_notes()
    else:
        messagebox.showwarning("Leere Notiz", "Bitte geben Sie eine Notiz ein.")

To save the paragraphs as a single entry in your notes, you can modify your save function to handle the line breaks (newlines) and convert them to a space or any other desired delimiter. Here's an updated version of your save function:

def save_note():
    note = text.get("1.0", "end-1c")
    if note:
        # Replace line breaks with a space or desired delimiter
        note = note.replace('\n', ' ')

        with open("notes.txt", "a") as file:
            file.write(note + "\n")
        text.delete("1.0", tk.END)
        text.see(tk.END)
        load_notes()
    else:
        messagebox.showwarning("Leere Notiz", "Bitte geben Sie eine Notiz ein.")

Easier way to do this. Using Walrus and f-string format.

Noticed, you don't need parameters for Entry widget.

• Use Walrus, so we don't need duplicate note
• Remove parameter for Entry widget.
• Use f-string format f'{note}' + "\n"
• Replace 1.0 to 0 for Entry.delete.

This is practical way I do this.

Snippet modified same as your script:

def save_note() -> str:
    if note := text.get():
    #if note:
        with open("notes.txt", "a") as file:
            file.write(f'{note}' + "\n")
        text.delete(0, tk.END)
        text.see(tk.END)
        load_notes()
    else:
        messagebox.showwarning("Leere Notiz", "Bitte geben Sie eine Notiz ein.")

I have improved something here. It can be useful

def save_note():
    note = text.get("1.0", tk.END).strip()
    note = note.replace('\r\n', '\n')
    if note:
        lines = note.split('\n')
        if len(lines) > 1:
            note = '\n'.join(['- ' + line for line in lines]) 
        with open("notes.txt", "a") as file:
            file.write(note + "\n")
        text.delete("1.0", tk.END)
        text.see(tk.END)
        load_notes()
    else:
        messagebox.showwarning("Leere Notiz", "Bitte geben Sie eine Notiz ein.")