#pdf Invoice Application using #tkinter

Creating an invoice app using Tkinter with Python is a great way to manage and generate invoices for your business. In this tutorial, I will show you step by step how to create a simple invoice app with Tkinter and also save the invoice as a PDF.

First, you need to have Python and Tkinter installed on your system. You can download Python from the official website and Tkinter should come pre-installed with it.

Now, let’s create the invoice app using Tkinter. Start by creating a new Python file and import the necessary modules:

from tkinter import *
from fpdf import FPDF

Next, create a class for your invoice app:

class InvoiceApp:
    def __init__(self, master):
        self.master = master
        self.master.title("Invoice App")
        self.master.geometry("500x500")

        self.create_widgets()

    def create_widgets(self):
        # Create labels
        Label(self.master, text="Client Name:").pack()
        self.client_name = Entry(self.master)
        self.client_name.pack()

        Label(self.master, text="Amount:").pack()
        self.amount = Entry(self.master)
        self.amount.pack()

        # Create button to generate invoice
        self.generate_button = Button(self.master, text="Generate Invoice", command=self.generate_invoice)
        self.generate_button.pack()

    def generate_invoice(self):
        client_name = self.client_name.get()
        amount = self.amount.get()

        # Generate PDF invoice
        pdf = FPDF()
        pdf.add_page()
        pdf.set_font("Arial", size=12)
        pdf.cell(200, 10, "Invoice", border=1, ln=True, align='C')
        pdf.cell(200, 10, f"Client Name: {client_name}", ln=True)
        pdf.cell(200, 10, f"Amount: {amount}", ln=True)
        pdf.output("invoice.pdf")
        Label(self.master, text="Invoice generated successfully!").pack()

Now, create the main function to run the Tkinter app:

def main():
    root = Tk()
    app = InvoiceApp(root)
    root.mainloop()

if __name__ == "__main__":
    main()

Run the Python file, and you should see a simple Tkinter window with fields for client name and amount, and a button to generate the invoice. Clicking on the button will create an invoice with the client name and amount and save it as a PDF file named "invoice.pdf".

This is a very basic example of creating an invoice app with Tkinter and generating a PDF invoice. You can customize the app further by adding more fields, formatting the invoice, and adding functionality to save the invoice to a specific folder or send it via email.

I hope this tutorial helps you in creating your own invoice app with Tkinter and PDF in Python. Let me know if you have any questions or need further assistance. Happy coding!