Python for Small Business: Automate Your Invoicing Manual invoicing wastes hours every month. Here is how to automate it with Python. Generate PDF Invoices from reportlab.lib.pagesizes import letter from reportlab.pdfgen import canvas from datetime import date def generate_invoice ( client , items , invoice_num ): filename = " invoice_ " + str ( invoice_num ) + " .pdf " c = canvas . Canvas ( filename , pagesize = letter ) c . setFont ( " Helvetica-Bold " , 20 ) c . drawString ( 50 , 750 , " INVOICE " ) c . setFont ( " Helvetica " , 12 ) c . drawString ( 50 , 730 , " Invoice #: " + str ( invoice_num )) c . drawString ( 50 , 715 , " Date: " + str ( date . today ())) c . drawString ( 50 , 670 , " Bill To: " + client [ ' name ' ]) c . drawString ( 50 , 655 , client [ ' email ' ]) y = 600 total = 0 for item in items : amount = item [ ' qty ' ] * item [ ' rate ' ] total += amount c . drawString ( 50 , y , item [ ' description ' ]) c . drawString ( 400 , y , " $ " + str ( amount )) y -= 20 c .…