Python + generating images + text

#!/usr/bin/env python

from PIL import Image, ImageDraw, ImageFont

# Text positioning

text_y = 100

text_pad = 45

# Define fonts for regular text and heading

data_font = ImageFont.truetype("Roboto-Regular.ttf", 32)

header_font = ImageFont.truetype("Roboto-Bold.ttf", 50)

# Load background image

bg_img = Image.open("bg_img.png")

surface = ImageDraw.Draw(bg_img)

# Write heading

surface.text((20, 8), "Temperature Log", font=header_font)

# Write temperatures

for x in range(len(temps)):

    surface.text((20, (text_y + (text_pad * x))), temps[x], font=data_font)

# Save file

bg_img.save(open("temp_log.png", "wb"), "PNG")