• warnings
  • import warnings
  • Used to disable the 'DeprecationWarning' warning in the terminal. This is definetly not best practice however... oh well.
• pandas
  • import pandas as pd
  • Used to read and manage the user information passed in from information.csv as a dataframe.
• os
  • import os
  • Used to open a file explorer instance of the output directory after the certificates have been created.
• pillow
  • from PIL import Image, ImageDraw, ImageFont
  • Used for image manipulation.
• filedialog
  • from tkinter import filedialog as fd
  • Used to select input / output files via GUI
• messagebox
  • from tkinter import messagebox as mb
  • Used to display runtime updates to user in GUI format

font_name = "WinterSong-owRGB.ttf"
font_size = 200
text_y_pos = 250
tagline_FONT_TYPE = "calibri.ttf"
tagline_font_size = 48
tagline_spacing = 370

PREFIX = "assets/"
FONT_TYPE = PREFIX +  font_name

Set fonts, text sizes and spacings between lines.
Constants PREFIX and FONT_TYPE are NOT to be changed.

• Reads "information.csv" into a pandas dataframe
• Error Handling: If the file cannot be found in the current directory then open a file explorer instance for the user to manually select the file.
• Open a file explorer instance for the user to select the output directory.
• For each name in the dataframe, call the function make_cert() passing the name in as a parameter.
• Update the information / input CSV file with the file path of the created certificate.
• Show a message box letting the user know the process is completed.
• Opens a file explorer instance of the output directory.

• Sets draw and img_width as global variables to be used in write_subline().
• Opens the base image and saves to img.
• Saves the width of the image to img_width. This is used when centrally aligning text.
• Creates a 'draw object'.
• Creates a font object with arguments assigned in 'setup variables'.
• Gets the text width of the name. This is used when centrally aligning text.
• Draws the text onto the base image
• Sublines
  • Initialises / resets line_num to 0.
  • Calls write_subline() twice^, passing in the text to write and the current line number as arguments.
  • This function returns an incremented line_num which gets called by the next function call.
• Saves the manipulated image into the 'out' directory.

^I have it calling twice. If you want more than two line of text then you will have to call it that many times.

• Creates a font object with arguments assigned in 'setup variables'.
• Gets the text width. This is used to centrally align the text.
• Draws the text onto the image.
  • + (50*line_num) for each new line it will add 50 pixels of spacing between the previous line of text. line_num is zero indexed.
• Returns line_num + 1; this value gets called by the next function call.

# ctrl+c / keyboard interrupt to stop

with open("information.csv","a") as info_file:
    while True:
        name = input("child first name: ")
        guardian_name = input("guardian full name: ")
        email = input("email: ")
            
        to_write = f"\n{name.title()},{guardian_name.title()},{email.lower()}"
        info_file.write(to_write)
        print("added " + to_write)

This script is used to write new entries into information.csv. Of course this could be done manually but this script produces a consistent format for all entries via data cleansing.