added edit_text function

first call the edit_text function then the generate_pdf function.
example:
edit_text("red",22,"Helvetica")
generate_pdf("hello world")

pdf.py

@@ -1,5 +1,9 @@
 from reportlab.pdfgen import canvas
+c=canvas.Canvas("report.pdf")
 def generate_pdf(text):
-    c=canvas.Canvas("report.pdf")
-    c.drawString(0,830,text)
+    c.drawString(0,800,text)
     c.save()
+def edit_text(color,size,font_name):
+    c.setFillColor(color)
+    c.setFont(font_name, size, leading = None)
+